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Workshop 6 · 6B.2 · Reducer worker

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35 complete recorded events. This is a transcript, not a Canvas screenshot. Commands are historical evidence.

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    "text": "You are working on a synthetic durable reservation importer. Follow README.md and the user request. Your isolated working directory is /workspace. Use file_editor for file changes. Terminal supports only workspace listing/reading and python3 stdlib probes/tests; no shell expansion, pipes, redirection, external files or processes. Python code is restricted to the fixture modules and json, copy, unittest, re, collections, itertools, math, random, decimal, typing, functools, statistics, time. Introspection, filesystem/environment/process/network APIs and dynamic execution are unavailable. Both relative paths and the virtual /workspace alias work in tools, including cd /workspace && python3 -m unittest -v. The tool interpreter is Python 3.9 with stdlib only; avoid syntax/APIs requiring newer Python. For probes use python3 -c with a quoted Python string; use file_editor for source/test writes. Only codec.py, reducer.py, checkpoint.py, pipeline.py, test_importer.py, test_codec.py, test_reducer.py and test_checkpoint.py may change. Tools cannot access personal memory, skills, private workspaces or credentials. Use finish with exact evidence, uncertainty and changed files. Do not infer independent acceptance success.\nReviewer role: Implement and test only reducer.py and test_reducer.py. Own pure detached state transitions, replay/conflicting IDs, reservation/cancellation and rollback. Read the full README; preserve empty_state/apply_event interfaces. Do not edit other files or delegate. Test using canonical events directly so concurrent codec edits cannot conceal reducer defects. Report exact evidence and interface issues."
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        "text": "You are the reducer-worker in a synthetic durable reservation importer exercise. You own EXACTLY two files: /workspace/reducer.py and /workspace/test_reducer.py. Do not edit any other files. You may add regression tests in test_reducer.py.\n\nHere is the COMPLETE acceptance contract (README.md):\n\nA synthetic durable reservation importer. Use Python standard library only.\n\nShared interfaces: codec.parse_event(line) returns a canonical event dictionary from a JSON string. reducer.empty_state() returns {\"stock\": {}, \"requests\": {}, \"seen\": {}}. reducer.apply_event(state, event) takes a valid state and a canonical event and returns a NEW state. checkpoint.dump_state(state) returns canonical JSON text; checkpoint.load_state(text) returns a validated state. pipeline.import_batch(state, lines) takes a one-pass iterable of JSON strings and returns a new state. pipeline.resume(text, lines) loads a checkpoint, imports a batch, and returns the new canonical checkpoint text.\n\nThe exact state shape is:\n- stock: dictionary of nonempty string SKU to nonnegative integer quantity.\n- requests: dictionary of nonempty string request ID to dictionary of nonempty SKU to positive integer quantity. Empty request dictionaries are allowed.\n- seen: dictionary of nonempty string event ID to canonical event dictionary. Each key equals that event's id. A seen record persists after cancellation.\n\nBooleans are never integer quantities. Identifiers may contain whitespace, pipes, backslashes and Unicode; preserve their exact content. No Unicode normalization or stripping. Empty strings are forbidden, but a space alone is a nonempty string. Input state and every nested input object must remain unchanged on success and failure. Returned objects must have no mutable aliases into input state or input events. Replaying an event must also return detached data.\n\nEvents are canonical (already validated by codec.parse_event); apply_event may assume its event is already canonical.\n\nState transitions and identity:\n- Check seen BEFORE business preconditions. If the event ID was seen with an equal canonical event, return a detached state with no change. If the ID was seen with a different event, raise ValueError. Thus reordered or split reserve lines that canonicalize identically are exact replays. Event IDs are global across operations and can never be reused for a different event, even after cancellation.\n- Restock adds Q and may introduce a new SKU.\n- Reserve requires an inactive request ID, all named SKUs already present in stock, and sufficient stock for ALL aggregate quantities. Deduct atomically and remember its quantities in requests. Empty reserve succeeds and creates an active empty request.\n- Cancel requires an active request, restores its quantities and removes it. A request ID may be reused after cancellation, using a new event ID.\n- Unknown/cancelled requests and insufficient/unknown stock raise ValueError.\n- Rejected events must never enter seen. A later corrected batch can retry the same event ID.\n- All state transitions must be atomic: on any ValueError the input state must be completely unchanged.\n- The returned NEW state and all returned nested objects must be fully detached (no mutable aliases into input state or input event). This holds on both success AND on the replay/no-change path (a replay must still return detached data).\n\nRegression tests needed (add to test_reducer.py using unittest):\n- restock introduces and adds quantity\n- reserve requires inactive request, all SKUs present, sufficient stock for aggregate quantities; atomic deduction\n- empty reserve creates an active empty request\n- cancel restores quantities and removes request; request reuse after cancel with new event id\n- seen check BEFORE business preconditions: replaying equal event returns identical state; reusing an ID for a different event raises ValueError even after cancellation\n- rejected (ValueError) events leave state unchanged and never enter seen\n- detachment: mutating the returned state/stock/requests/seen or returned event copies must not affect input state; input state deeply unchanged after success and failure; replay also returns detached data\n- unknown/cancelled requests and insufficient/unknown stock raise ValueError\n\nThe starter reducer.py may have seeded defects. Inspect it, fix all defects so it satisfies the contract above, and add comprehensive regression tests to test_reducer.py. Do not modify public interface names (empty_state, apply_event).\n\nRun your tests only on reducer (e.g. cd /workspace && python3 -m unittest -v). You cannot use external files/network/installations; only the listed modules. Report exactly what you changed and the test command/results."
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        "text": "1\tfrom copy import deepcopy\n2\t\n3\t\n4\tdef empty_state():\n5\t    return {'stock': {}, 'requests': {}, 'seen': {}}\n6\t\n7\t\n8\tdef apply_event(state, event):\n9\t    result = dict(state)\n10\t    event_id = event['id']\n11\t    if event_id in result['seen']:\n12\t        if result['seen'][event_id] != event:\n13\t            raise ValueError('conflicting event id')\n14\t        return result\n15\t    stock, requests = result['stock'], result['requests']\n16\t    if event['op'] == 'restock':\n17\t        stock[event['sku']] = stock.get(event['sku'], 0) + event['qty']\n18\t    elif event['op'] == 'reserve':\n19\t        request = event['request']\n20\t        lines = dict(event['lines'])\n21\t        if request in requests or any(sku not in stock or stock[sku] < qty for sku, qty in lines.items()):\n22\t            raise ValueError('cannot reserve')\n23\t        for sku, qty in lines.items():\n24\t            stock[sku] -= qty\n25\t        requests[request] = lines\n26\t    else:\n27\t        request = event['request']\n28\t        if request not in requests:\n29\t            raise ValueError('inactive request')\n30\t        for sku, qty in requests[request].items():\n31\t            stock[sku] += qty\n32\t    result['seen'][event_id] = deepcopy(event)\n33\t    return result"
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        "text": "1\t# Durable reservation importer\n2\t\n3\tThis is a deliberately prepared implementation exercise. The starter has deliberately seeded defects in otherwise complete implementations, not a historical agent failure. Use Python standard library only. Implement four modules. No network, concurrency or persistent disk storage is required. Only codec.py, reducer.py, checkpoint.py, pipeline.py, test_importer.py, test_codec.py, test_reducer.py and test_checkpoint.py may change.\n4\t\n5\t## Shared interfaces and state\n6\t\n7\t`codec.parse_event(line)` returns a canonical event dictionary from a JSON string. `reducer.empty_state()` returns `{\"stock\": {}, \"requests\": {}, \"seen\": {}}`. `reducer.apply_event(state, event)` takes a valid state and a canonical event and returns a NEW state. `checkpoint.dump_state(state)` returns canonical JSON text; `checkpoint.load_state(text)` returns a validated state. `pipeline.import_batch(state, lines)` takes a one-pass iterable of JSON strings and returns a new state. `pipeline.resume(text, lines)` loads a checkpoint, imports a batch, and returns the new canonical checkpoint text.\n8\t\n9\tThe exact state shape is:\n10\t\n11\t- stock: dictionary of nonempty string SKU to nonnegative integer quantity.\n12\t- requests: dictionary of nonempty string request ID to dictionary of nonempty SKU to positive integer quantity. Empty request dictionaries are allowed.\n13\t- seen: dictionary of nonempty string event ID to canonical event dictionary. Each key equals that event's id. A seen record persists after cancellation.\n14\t\n15\tBooleans are never integer quantities. Identifiers may contain whitespace, pipes, backslashes and Unicode; preserve their exact content. No Unicode normalization or stripping. Empty strings are forbidden, but a space alone is a nonempty string. Input state and every nested input object must remain unchanged on success and failure. Returned objects must have no mutable aliases into input state or input events. Replaying an event must also return detached data.\n16\t\n17\t## Events and canonicalization\n18\t\n19\tAccept precisely these object shapes, rejecting extra or missing fields with ValueError:\n20\t\n21\t- `{\"id\": ID, \"op\": \"restock\", \"sku\": SKU, \"qty\": Q}` where Q is a positive integer.\n22\t- `{\"id\": ID, \"op\": \"reserve\", \"request\": REQUEST, \"lines\": [[SKU, Q], ...]}`. Each input line is a JSON array of exactly two items. Q is a positive integer. Aggregate duplicate SKU quantities and sort by SKU using Python string ordering. Canonical lines are arrays of two items, never tuples. Empty lines are allowed.\n23\t- `{\"id\": ID, \"op\": \"cancel\", \"request\": REQUEST}`.\n24\t\n25\tIDs, SKU and REQUEST are nonempty strings. Reject malformed JSON, duplicate JSON object keys at any depth, non-object events and unsupported operations. Whitespace surrounding JSON text is accepted. Preserve ID/string values. Reject invalid input with ValueError, including non-string input to parse_event. Only parse_event must validate raw events; apply_event may assume its event is already canonical.\n26\t\n27\t## State transitions and identity\n28\t\n29\tCheck seen BEFORE business preconditions. If the event ID was seen with an equal canonical event, return a detached state with no change. If the ID was seen with a different event, raise ValueError. Thus reordered or split reserve lines that canonicalize identically are exact replays. Event IDs are global across operations and can never be reused for a different event, even after cancellation.\n30\t\n31\tRestock adds Q and may introduce a new SKU. Reserve requires an inactive request ID, all named SKUs already present in stock, and sufficient stock for ALL aggregate quantities. Deduct atomically and remember its quantities in requests. Empty reserve succeeds and creates an active empty request. Cancel requires an active request, restores its quantities and removes it. A request ID may be reused after cancellation, using a new event ID. Unknown/cancelled requests and insufficient/unknown stock raise ValueError. Rejected events must never enter seen. A later corrected batch can retry the same event ID.\n32\t\n33\t## Checkpoints\n34\t\n35\tThe exact wrapper is `{\"version\": 1, \"state\": STATE}`. dump_state validates state, then uses json.dumps with ensure_ascii=False, sort_keys=True, separators=(',', ':'), plus exactly one final newline. load_state accepts surrounding JSON whitespace and validates the wrapper and complete state. Reject duplicate JSON keys, extra/missing wrapper or state keys, a boolean or non-1 version, malformed JSON and invalid field types/quantities with ValueError.\n36\t\n37\tFor seen values, call parse_event on their JSON representation and require equality with the original value. Thus a checkpoint with unaggregated/reordered reserve lines is invalid; loading must not silently repair it. Validate all nested state fields. Structural validation is required; reconstructing historical stock or proving seen/request consistency is out of scope. Dumping an invalid state also raises ValueError. Loading/dumping must not mutate input data. Two equal valid states with different dictionary insertion order produce exactly equal checkpoint text. Loading a dumped state preserves all three state fields and their replay behavior, including seen IDs of cancelled requests. Floats and booleans are invalid quantities anywhere in state.\n38\t\n39\t## Integration and rollback\n40\t\n41\tpipeline uses codec.parse_event and reducer.apply_event. Process lines in order and consume the iterable once. All-or-nothing batch semantics: if any parse or transition raises ValueError, raise ValueError and leave the caller's entire state unchanged. Empty batch returns a detached equal state. resume must use checkpoint.load_state, import_batch, then checkpoint.dump_state.\n42\t\n43\tA real workflow must be able to stop after any event, dump and load its state, and finish the remaining events with exactly the same state and byte-identical final checkpoint as uninterrupted processing. This includes replaying old events after restart. Do not discard seen or request information to shrink checkpoints.\n44\t\n45\t## Verification\n46\t\n47\tThe starter test is only an import smoke test. Add regression tests and run them. Verify malformed input, canonical replay, cancellation/reuse, nested aliasing, failed batch rollback and restart equivalence. Report changed files, exact check commands/results, integration fixes and remaining uncertainty. The external course checker lives outside this workspace. Do not access it, other workspaces, parent directories, credentials or network services. Do not install dependencies, commit or write memory files. Use PYTHONDONTWRITEBYTECODE=1. Path rules are instructions, not filesystem isolation."
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        "text": "1\timport json\n2\t\n3\t\n4\tdef unique_object(pairs):\n5\t    result = {}\n6\t    for key, value in pairs:\n7\t        if key in result:\n8\t            raise ValueError('duplicate key')\n9\t        result[key] = value\n10\t    return result\n11\t\n12\t\n13\tdef read_json(text):\n14\t    if not isinstance(text, str):\n15\t        raise ValueError('text required')\n16\t    try:\n17\t        return json.loads(text, object_pairs_hook=unique_object)\n18\t    except (TypeError, json.JSONDecodeError) as exc:\n19\t        raise ValueError('invalid JSON') from exc\n20\t\n21\t\n22\tdef string(value):\n23\t    return isinstance(value, str) and bool(value)\n24\t\n25\t\n26\tdef integer(value, minimum):\n27\t    return isinstance(value, int) and value >= minimum\n28\t\n29\t\n30\tdef parse_event(line):\n31\t    event = read_json(line)\n32\t    if not isinstance(event, dict) or not string(event.get('id')):\n33\t        raise ValueError('event object and id required')\n34\t    op = event.get('op')\n35\t    fields = {'restock': {'id', 'op', 'sku', 'qty'},\n36\t              'reserve': {'id', 'op', 'request', 'lines'},\n37\t              'cancel': {'id', 'op', 'request'}}\n38\t    if not isinstance(op, str) or op not in fields or set(event) != fields[op]:\n39\t        raise ValueError('operation or fields')\n40\t    if op == 'restock':\n41\t        if not string(event['sku']) or not integer(event['qty'], 1):\n42\t            raise ValueError('restock fields')\n43\t    elif not string(event['request']):\n44\t        raise ValueError('request')\n45\t    if op == 'reserve':\n46\t        if not isinstance(event['lines'], list):\n47\t            raise ValueError('lines')\n48\t        quantities = {}\n49\t        for pair in event['lines']:\n50\t            if not isinstance(pair, list) or len(pair) != 2:\n51\t                raise ValueError('pair')\n52\t            sku, qty = pair\n53\t            if not string(sku) or not integer(qty, 1):\n54\t                raise ValueError('quantity')\n55\t            quantities[sku] = qty\n56\t        event['lines'] = [[sku, qty] for sku, qty in sorted(quantities.items())]\n57\t    return event"
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    "old_str": "def apply_event(state, event):\n    result = dict(state)\n    event_id = event['id']\n    if event_id in result['seen']:\n        if result['seen'][event_id] != event:\n            raise ValueError('conflicting event id')\n        return result\n    stock, requests = result['stock'], result['requests']\n    if event['op'] == 'restock':\n        stock[event['sku']] = stock.get(event['sku'], 0) + event['qty']\n    elif event['op'] == 'reserve':\n        request = event['request']\n        lines = dict(event['lines'])\n        if request in requests or any(sku not in stock or stock[sku] < qty for sku, qty in lines.items()):\n            raise ValueError('cannot reserve')\n        for sku, qty in lines.items():\n            stock[sku] -= qty\n        requests[request] = lines\n    else:\n        request = event['request']\n        if request not in requests:\n            raise ValueError('inactive request')\n        for sku, qty in requests[request].items():\n            stock[sku] += qty\n    result['seen'][event_id] = deepcopy(event)\n    return result",
    "new_str": "def apply_event(state, event):\n    result = deepcopy(state)\n    stock, requests, seen = result['stock'], result['requests'], result['seen']\n    event_id = event['id']\n    if event_id in seen:\n        if seen[event_id] != event:\n            raise ValueError('conflicting event id')\n        return result\n    if event['op'] == 'restock':\n        stock[event['sku']] = stock.get(event['sku'], 0) + event['qty']\n    elif event['op'] == 'reserve':\n        request = event['request']\n        lines = dict(event['lines'])\n        if request in requests or any(sku not in stock or stock[sku] < qty for sku, qty in lines.items()):\n            raise ValueError('cannot reserve')\n        for sku, qty in lines.items():\n            stock[sku] -= qty\n        requests[request] = lines\n    else:\n        request = event['request']\n        if request not in requests:\n            raise ValueError('inactive request')\n        for sku, qty in requests[request].items():\n            stock[sku] += qty\n        del requests[request]\n    seen[event_id] = deepcopy(event)\n    return result",
    "insert_line": null,
    "view_range": null,
    "kind": "FileEditorAction"
  },
  "tool_name": "file_editor",
  "tool_call_id": "call_fbf55f1f954142889b2ac61b",
  "tool_call": {
    "id": "call_fbf55f1f954142889b2ac61b",
    "responses_item_id": null,
    "name": "file_editor",
    "arguments": "{\"command\": \"str_replace\", \"path\": \"/workspace/reducer.py\", \"old_str\": \"def apply_event(state, event):\\n    result = dict(state)\\n    event_id = event['id']\\n    if event_id in result['seen']:\\n        if result['seen'][event_id] != event:\\n            raise ValueError('conflicting event id')\\n        return result\\n    stock, requests = result['stock'], result['requests']\\n    if event['op'] == 'restock':\\n        stock[event['sku']] = stock.get(event['sku'], 0) + event['qty']\\n    elif event['op'] == 'reserve':\\n        request = event['request']\\n        lines = dict(event['lines'])\\n        if request in requests or any(sku not in stock or stock[sku] < qty for sku, qty in lines.items()):\\n            raise ValueError('cannot reserve')\\n        for sku, qty in lines.items():\\n            stock[sku] -= qty\\n        requests[request] = lines\\n    else:\\n        request = event['request']\\n        if request not in requests:\\n            raise ValueError('inactive request')\\n        for sku, qty in requests[request].items():\\n            stock[sku] += qty\\n    result['seen'][event_id] = deepcopy(event)\\n    return result\", \"new_str\": \"def apply_event(state, event):\\n    result = deepcopy(state)\\n    stock, requests, seen = result['stock'], result['requests'], result['seen']\\n    event_id = event['id']\\n    if event_id in seen:\\n        if seen[event_id] != event:\\n            raise ValueError('conflicting event id')\\n        return result\\n    if event['op'] == 'restock':\\n        stock[event['sku']] = stock.get(event['sku'], 0) + event['qty']\\n    elif event['op'] == 'reserve':\\n        request = event['request']\\n        lines = dict(event['lines'])\\n        if request in requests or any(sku not in stock or stock[sku] < qty for sku, qty in lines.items()):\\n            raise ValueError('cannot reserve')\\n        for sku, qty in lines.items():\\n            stock[sku] -= qty\\n        requests[request] = lines\\n    else:\\n        request = event['request']\\n        if request not in requests:\\n            raise ValueError('inactive request')\\n        for sku, qty in requests[request].items():\\n            stock[sku] += qty\\n        del requests[request]\\n    seen[event_id] = deepcopy(event)\\n    return result\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792417473-xvvay6wCfEPIxuxJLzV3",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "file_editor: {\"command\": \"str_replace\", \"path\": \"/workspace/reducer.py\", \"old_str\": \"def apply_event(state, event):\\n    result = dict(state)\\n    event_id = event['id']\\n    if event_id in result['seen']:\\n        if result['seen'][event_id] != event:\\n            raise ValueError('conflicting event id')\\n        return result\\n    stock, requests = result['stock'], result['requests']\\n    if event['op'] == 'restock':\\n        stock[event['sku']] = stock.get(event['sku'], 0) + event['qty']\\n    elif event['op'] == 'reserve':\\n        request = event['request']\\n        lines = dict(event['lines'])\\n        if request in requests or any(sku not in stock or stock[sku] < qty for sku, qty in lines.items()):\\n            raise ValueError('cannot reserve')\\n        for sku, qty in lines.items():\\n            stock[sku] -= qty\\n        requests[request] = lines\\n    else:\\n        request = event['request']\\n        if request not in requests:\\n            raise ValueError('inactive request')\\n        for sku, qty in requests[request].items():\\n            stock[sku] += qty\\n    result['seen'][event_id] = deepcopy(event)\\n    return result\", \"new_str\": \"def apply_event(state, event):\\n    result = deepcopy(state)\\n    stock, requests, seen = result['stock'], result['requests'], result['seen']\\n    event_id = event['id']\\n    if event_id in seen:\\n        if seen[event_id] != event:\\n            raise ValueError('conflicting event id')\\n        return result\\n    if event['op'] == 'restock':\\n        stock[event['sku']] = stock.get(event['sku'], 0) + event['qty']\\n    elif event['op'] == 'reserve':\\n        request = event['request']\\n        lines = dict(event['lines'])\\n        if request in requests or any(sku not in stock or stock[sku] < qty for sku, qty in lines.items()):\\n            raise ValueError('cannot reserve')\\n        for sku, qty in lines.items():\\n            stock[sku] -= qty\\n        requests[request] = lines\\n    else:\\n        request = event['request']\\n        if request not in requests:\\n            raise ValueError('inactive request')\\n        for sku, qty in requests[request].items():\\n            stock[sku] += qty\\n        del requests[request]\\n    seen[event_id] = deepcopy(event)\\n    return result\"}",
  "kind": "ActionEvent",
  "thought": []
}

{
  "id": "2782964a-0963-4d48-a9db-6de53a5dbb6a",
  "timestamp": "2026-10-19T08:44:59.814314",
  "source": "environment",
  "parent_id": "cc126825-7fa6-41d6-b5a7-8b77acb050e1",
  "tool_name": "file_editor",
  "tool_call_id": "call_fbf55f1f954142889b2ac61b",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Updated /workspace/reducer.py\nfrom copy import deepcopy\n\n\ndef empty_state():\n    return {'stock': {}, 'requests': {}, 'seen': {}}\n\n\ndef apply_event(state, event):\n    result = deepcopy(state)\n    stock, requests, seen = result['stock'], result['requests'], result['seen']\n    event_id = event['id']\n    if event_id in seen:\n        if seen[event_id] != event:\n            raise ValueError('conflicting event id')\n        return result\n    if event['op'] == 'restock':\n        stock[event['sku']] = stock.get(event['sku'], 0) + event['qty']\n    elif event['op'] == 'reserve':\n        request = event['request']\n        lines = dict(event['lines'])\n        if request in requests or any(sku not in stock or stock[sku] < qty for sku, qty in lines.items()):\n            raise ValueError('cannot reserve')\n        for sku, qty in lines.items():\n            stock[sku] -= qty\n        requests[request] = lines\n    else:\n        request = event['request']\n        if request not in requests:\n            raise ValueError('inactive request')\n        for sku, qty in requests[request].items():\n            stock[sku] += qty\n        del requests[request]\n    seen[event_id] = deepcopy(event)\n    return result\n"
      }
    ],
    "is_error": false,
    "command": "str_replace",
    "path": "/workspace/reducer.py",
    "prev_exist": true,
    "old_content": null,
    "new_content": null,
    "kind": "FileEditorObservation"
  },
  "action_id": "cc126825-7fa6-41d6-b5a7-8b77acb050e1",
  "extended_content": [],
  "kind": "ObservationEvent"
}

{
  "id": "4491889e-b590-46f9-8c97-b65ed97937a7",
  "timestamp": "2026-10-19T08:45:52.017199",
  "source": "agent",
  "parent_id": "2782964a-0963-4d48-a9db-6de53a5dbb6a",
  "responses_reasoning_item": null,
  "action": {
    "command": "create",
    "path": "/workspace/test_reducer.py",
    "file_text": "import unittest\nfrom copy import deepcopy\n\nfrom reducer import empty_state, apply_event\n\n\ndef restock(eid, sku, qty):\n    return {'id': eid, 'op': 'restock', 'sku': sku, 'qty': qty}\n\n\ndef reserve(eid, request, lines):\n    # lines: list of [sku, qty] pairs, canonical form (aggregated/sorted)\n    return {'id': eid, 'op': 'reserve', 'request': request, 'lines': list(lines)}\n\n\ndef cancel(eid, request):\n    return {'id': eid, 'op': 'cancel', 'request': request}\n\n\nclass ReducerTest(unittest.TestCase):\n    def test_empty_state(self):\n        st = empty_state()\n        self.assertEqual({'stock': {}, 'requests': {}, 'seen': {}}, st)\n\n    def test_restock_introduces_and_adds(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        self.assertEqual({'A': 5}, state['stock'])\n        state = apply_event(state, restock('e2', 'A', 3))\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertIn('e1', state['seen'])\n        self.assertIn('e2', state['seen'])\n\n    def test_reserve_requires_inactive_request(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 2]]))\n        # request now active; re-reserving with same ID must fail\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e3', 'r1', [['A', 1]]))\n        # failure must not alter state\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertEqual({'A': 2}, state['requests']['r1'])\n\n    def test_reserve_requires_all_sku_present(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 1], ['B', 1]]))\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_reserve_atomic_deduction(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 2))\n        state = apply_event(state, restock('e2', 'B', 5))\n        with self.assertRaises(ValueError):\n            # aggregate demand exceeds stock for B\n            apply_event(state, reserve('e3', 'r1', [['A', 1], ['B', 6]]))\n        # no partial deduction\n        self.assertEqual({'A': 2, 'B': 5}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e3', state['seen'])\n\n    def test_reserve_sufficient_stock_aggregate_deduces(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, restock('e2', 'B', 10))\n        state = apply_event(state, reserve('e3', 'r1', [['A', 3], ['B', 4]]))\n        self.assertEqual({'A': 7, 'B': 6}, state['stock'])\n        self.assertEqual({'A': 3, 'B': 4}, state['requests']['r1'])\n\n    def test_empty_reserve_creates_active_empty_request(self):\n        state = empty_state()\n        state = apply_event(state, reserve('e1', 'r1', []))\n        self.assertEqual({'r1': {}}, state['requests'])\n        self.assertIn('e1', state['seen'])\n        # r1 is now active; cannot reserve same ID again\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', []))\n        # and cannot cancel an empty request's cancellation double? cancel restores nothing and removes\n        state = apply_event(state, cancel('e3', 'r1'))\n        self.assertNotIn('r1', state['requests'])\n\n    def test_cancel_restores_and_removes_and_reuse(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 4]]))\n        self.assertEqual({'A': 6}, state['stock'])\n        state = apply_event(state, cancel('e3', 'r1'))\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        # request ID reusable with a new event id\n        state = apply_event(state, reserve('e4', 'r1', [['A', 2]]))\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertEqual({'A': 2}, state['requests']['r1'])\n\n    def test_cancel_unknown_request_raises(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        with self.assertRaises(ValueError):\n            apply_event(state, cancel('e2', 'nope'))\n        self.assertEqual({'A': 5}, state['stock'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_seen_replay_equal_event_returns_no_change_detached(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        ev = restock('e1', 'A', 5)\n        state2 = apply_event(state, ev)\n        self.assertEqual(state, state2)\n        self.assertNotIn('e2', state2['seen'])\n        self.assertEqual({'A': 5}, state2['stock'])\n        # replay must be detached\n        state2['stock']['A'] = 999\n        self.assertEqual({'A': 5}, state['stock'])\n\n    def test_seen_check_before_business_preconditions(self):\n        # an event that would fail a business precondition must still replay\n        # if its ID was seen with an equal canonical event.\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        # cancel to free r1, but e2 id must remain in seen\n        state = apply_event(state, cancel('e3', 'r1'))\n        # replay of reserve e2 with same canonical event returns unchanged state\n        replay = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        self.assertEqual(state, replay)\n        self.assertNotIn('r1', replay['requests'])\n\n    def test_seen_conflicting_event_raises_even_after_cancel(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        state = apply_event(state, cancel('e3', 'r1'))\n        # reusing id e2 for a different event must raise even after cancellation\n        with self.assertRaises(ValueError):\n            apply_event(state, restock('e2', 'B', 5))\n        self.assertEqual(state, state)\n        self.assertNotIn('B', state['stock'])\n\n    def test_conflicting_event_raises_and_rejects_no_seen_entry(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        with self.assertRaises(ValueError):\n            apply_event(state, restock('e1', 'A', 7))  # same id, different event\n        self.assertNotIn('B', state['stock'])\n        self.assertEqual({'A': 5}, state['stock'])\n        # seen still holds original e1\n        self.assertEqual(restock('e1', 'A', 5), state['seen']['e1'])\n\n    def test_reserve_insufficient_stock_raises(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 2))\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        self.assertEqual({'A': 2}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_reserve_unknown_stock_raises(self):\n        state = empty_state()\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e1', 'r1', [['Z', 1]]))\n        self.assertEqual({}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e1', state['seen'])\n\n    def test_detachment_success_and_no_alias_into_event(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        ev = reserve('e2', 'r1', [['A', 3]])\n        state2 = apply_event(state, ev)\n        # input state unchanged\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        # returned state detached: mutate returned nested objects\n        state2['stock']['A'] = 1\n        state2['stock']['NEW'] = 1\n        state2['requests']['r1']['A'] = 999\n        state2['requests']['other'] = {}\n        state2['seen']['e2']['qty'] = 999\n        state2['seen']['new'] = {'x': 1}\n        # input untouched\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertEqual({'r1': {'A': 3}}, state2_baseline_check()['requests'])\n\n    @staticmethod\n    def state2_baseline_check():\n        # helper placeholder replaced by real assertions inline\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        return apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n\n    def test_detachment_of_returned_reserve_storage_from_event(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        ev = reserve('e2', 'r1', [['A', 3]])\n        state2 = apply_event(state, ev)\n        # mutate the event after application; should not affect returned state\n        ev['lines'][0][1] = 999\n        ev['lines'][0][0] = 'CHANGED'\n        ev['id'] = 'mutated'\n        self.assertEqual({'A': 3}, state2['requests']['r1'])\n        self.assertEqual('e2', state2['seen']['e2']['id'])\n\n    def test_detachment_input_unchanged_on_failure(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        snapshot = deepcopy(state)\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 99]]))\n        self.assertEqual(snapshot, state)\n        # nested identity preserved (untouched)\n        orig_stock = state['stock']\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e3', 'r1', [['B', 1]]))\n        self.assertIs(orig_stock, state['stock'])\n\n    def test_restock_aliasing_does_not_affect_input(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        state['stock']['A'] = 100\n        state['stock']['B'] = 1\n        state['seen']['tampered'] = {'id': 'x'}\n        next_state = apply_event(state, restock('e2', 'A', 1))\n        # new event processed normally; existing keys preserved\n        self.assertEqual({'A': 101, 'B': 1}, next_state['stock'])\n        # input state still holds the mutated values (it was mutated by caller)\n        self.assertEqual({'A': 100, 'B': 1}, state['stock'])\n\n    def test_replay_returns_detached_data(self):\n        state = empty_state()\n        state = apply_event(state, reserve('e1', 'r1', []))\n        replay = apply_event(state, reserve('e1', 'r1', []))\n        replay['stock']['X'] = 1\n        replay['requests']['r1']['K'] = 5\n        replay['seen']['e1']['id'] = 'z'\n        self.assertEqual({}, state['stock'])\n        self.assertEqual({'r1': {}}, state['requests'])\n        self.assertEqual('e1', state['seen']['e1']['id'])\n\n\nif __name__ == '__main__':\n    unittest.main()",
    "old_str": null,
    "new_str": null,
    "insert_line": null,
    "view_range": null,
    "kind": "FileEditorAction"
  },
  "tool_name": "file_editor",
  "tool_call_id": "call_efddb690dcca45e4a158f486",
  "tool_call": {
    "id": "call_efddb690dcca45e4a158f486",
    "responses_item_id": null,
    "name": "file_editor",
    "arguments": "{\"command\": \"create\", \"path\": \"/workspace/test_reducer.py\", \"file_text\": \"import unittest\\nfrom copy import deepcopy\\n\\nfrom reducer import empty_state, apply_event\\n\\n\\ndef restock(eid, sku, qty):\\n    return {'id': eid, 'op': 'restock', 'sku': sku, 'qty': qty}\\n\\n\\ndef reserve(eid, request, lines):\\n    # lines: list of [sku, qty] pairs, canonical form (aggregated/sorted)\\n    return {'id': eid, 'op': 'reserve', 'request': request, 'lines': list(lines)}\\n\\n\\ndef cancel(eid, request):\\n    return {'id': eid, 'op': 'cancel', 'request': request}\\n\\n\\nclass ReducerTest(unittest.TestCase):\\n    def test_empty_state(self):\\n        st = empty_state()\\n        self.assertEqual({'stock': {}, 'requests': {}, 'seen': {}}, st)\\n\\n    def test_restock_introduces_and_adds(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 5))\\n        self.assertEqual({'A': 5}, state['stock'])\\n        state = apply_event(state, restock('e2', 'A', 3))\\n        self.assertEqual({'A': 8}, state['stock'])\\n        self.assertIn('e1', state['seen'])\\n        self.assertIn('e2', state['seen'])\\n\\n    def test_reserve_requires_inactive_request(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        state = apply_event(state, reserve('e2', 'r1', [['A', 2]]))\\n        # request now active; re-reserving with same ID must fail\\n        with self.assertRaises(ValueError):\\n            apply_event(state, reserve('e3', 'r1', [['A', 1]]))\\n        # failure must not alter state\\n        self.assertEqual({'A': 8}, state['stock'])\\n        self.assertEqual({'A': 2}, state['requests']['r1'])\\n\\n    def test_reserve_requires_all_sku_present(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        with self.assertRaises(ValueError):\\n            apply_event(state, reserve('e2', 'r1', [['A', 1], ['B', 1]]))\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        self.assertNotIn('e2', state['seen'])\\n\\n    def test_reserve_atomic_deduction(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 2))\\n        state = apply_event(state, restock('e2', 'B', 5))\\n        with self.assertRaises(ValueError):\\n            # aggregate demand exceeds stock for B\\n            apply_event(state, reserve('e3', 'r1', [['A', 1], ['B', 6]]))\\n        # no partial deduction\\n        self.assertEqual({'A': 2, 'B': 5}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        self.assertNotIn('e3', state['seen'])\\n\\n    def test_reserve_sufficient_stock_aggregate_deduces(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        state = apply_event(state, restock('e2', 'B', 10))\\n        state = apply_event(state, reserve('e3', 'r1', [['A', 3], ['B', 4]]))\\n        self.assertEqual({'A': 7, 'B': 6}, state['stock'])\\n        self.assertEqual({'A': 3, 'B': 4}, state['requests']['r1'])\\n\\n    def test_empty_reserve_creates_active_empty_request(self):\\n        state = empty_state()\\n        state = apply_event(state, reserve('e1', 'r1', []))\\n        self.assertEqual({'r1': {}}, state['requests'])\\n        self.assertIn('e1', state['seen'])\\n        # r1 is now active; cannot reserve same ID again\\n        with self.assertRaises(ValueError):\\n            apply_event(state, reserve('e2', 'r1', []))\\n        # and cannot cancel an empty request's cancellation double? cancel restores nothing and removes\\n        state = apply_event(state, cancel('e3', 'r1'))\\n        self.assertNotIn('r1', state['requests'])\\n\\n    def test_cancel_restores_and_removes_and_reuse(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        state = apply_event(state, reserve('e2', 'r1', [['A', 4]]))\\n        self.assertEqual({'A': 6}, state['stock'])\\n        state = apply_event(state, cancel('e3', 'r1'))\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        # request ID reusable with a new event id\\n        state = apply_event(state, reserve('e4', 'r1', [['A', 2]]))\\n        self.assertEqual({'A': 8}, state['stock'])\\n        self.assertEqual({'A': 2}, state['requests']['r1'])\\n\\n    def test_cancel_unknown_request_raises(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 5))\\n        with self.assertRaises(ValueError):\\n            apply_event(state, cancel('e2', 'nope'))\\n        self.assertEqual({'A': 5}, state['stock'])\\n        self.assertNotIn('e2', state['seen'])\\n\\n    def test_seen_replay_equal_event_returns_no_change_detached(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 5))\\n        ev = restock('e1', 'A', 5)\\n        state2 = apply_event(state, ev)\\n        self.assertEqual(state, state2)\\n        self.assertNotIn('e2', state2['seen'])\\n        self.assertEqual({'A': 5}, state2['stock'])\\n        # replay must be detached\\n        state2['stock']['A'] = 999\\n        self.assertEqual({'A': 5}, state['stock'])\\n\\n    def test_seen_check_before_business_preconditions(self):\\n        # an event that would fail a business precondition must still replay\\n        # if its ID was seen with an equal canonical event.\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 5))\\n        state = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\\n        # cancel to free r1, but e2 id must remain in seen\\n        state = apply_event(state, cancel('e3', 'r1'))\\n        # replay of reserve e2 with same canonical event returns unchanged state\\n        replay = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\\n        self.assertEqual(state, replay)\\n        self.assertNotIn('r1', replay['requests'])\\n\\n    def test_seen_conflicting_event_raises_even_after_cancel(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        state = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\\n        state = apply_event(state, cancel('e3', 'r1'))\\n        # reusing id e2 for a different event must raise even after cancellation\\n        with self.assertRaises(ValueError):\\n            apply_event(state, restock('e2', 'B', 5))\\n        self.assertEqual(state, state)\\n        self.assertNotIn('B', state['stock'])\\n\\n    def test_conflicting_event_raises_and_rejects_no_seen_entry(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 5))\\n        with self.assertRaises(ValueError):\\n            apply_event(state, restock('e1', 'A', 7))  # same id, different event\\n        self.assertNotIn('B', state['stock'])\\n        self.assertEqual({'A': 5}, state['stock'])\\n        # seen still holds original e1\\n        self.assertEqual(restock('e1', 'A', 5), state['seen']['e1'])\\n\\n    def test_reserve_insufficient_stock_raises(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 2))\\n        with self.assertRaises(ValueError):\\n            apply_event(state, reserve('e2', 'r1', [['A', 3]]))\\n        self.assertEqual({'A': 2}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        self.assertNotIn('e2', state['seen'])\\n\\n    def test_reserve_unknown_stock_raises(self):\\n        state = empty_state()\\n        with self.assertRaises(ValueError):\\n            apply_event(state, reserve('e1', 'r1', [['Z', 1]]))\\n        self.assertEqual({}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        self.assertNotIn('e1', state['seen'])\\n\\n    def test_detachment_success_and_no_alias_into_event(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        ev = reserve('e2', 'r1', [['A', 3]])\\n        state2 = apply_event(state, ev)\\n        # input state unchanged\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        # returned state detached: mutate returned nested objects\\n        state2['stock']['A'] = 1\\n        state2['stock']['NEW'] = 1\\n        state2['requests']['r1']['A'] = 999\\n        state2['requests']['other'] = {}\\n        state2['seen']['e2']['qty'] = 999\\n        state2['seen']['new'] = {'x': 1}\\n        # input untouched\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertEqual({'r1': {'A': 3}}, state2_baseline_check()['requests'])\\n\\n    @staticmethod\\n    def state2_baseline_check():\\n        # helper placeholder replaced by real assertions inline\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        return apply_event(state, reserve('e2', 'r1', [['A', 3]]))\\n\\n    def test_detachment_of_returned_reserve_storage_from_event(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        ev = reserve('e2', 'r1', [['A', 3]])\\n        state2 = apply_event(state, ev)\\n        # mutate the event after application; should not affect returned state\\n        ev['lines'][0][1] = 999\\n        ev['lines'][0][0] = 'CHANGED'\\n        ev['id'] = 'mutated'\\n        self.assertEqual({'A': 3}, state2['requests']['r1'])\\n        self.assertEqual('e2', state2['seen']['e2']['id'])\\n\\n    def test_detachment_input_unchanged_on_failure(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 5))\\n        snapshot = deepcopy(state)\\n        with self.assertRaises(ValueError):\\n            apply_event(state, reserve('e2', 'r1', [['A', 99]]))\\n        self.assertEqual(snapshot, state)\\n        # nested identity preserved (untouched)\\n        orig_stock = state['stock']\\n        with self.assertRaises(ValueError):\\n            apply_event(state, reserve('e3', 'r1', [['B', 1]]))\\n        self.assertIs(orig_stock, state['stock'])\\n\\n    def test_restock_aliasing_does_not_affect_input(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 5))\\n        state['stock']['A'] = 100\\n        state['stock']['B'] = 1\\n        state['seen']['tampered'] = {'id': 'x'}\\n        next_state = apply_event(state, restock('e2', 'A', 1))\\n        # new event processed normally; existing keys preserved\\n        self.assertEqual({'A': 101, 'B': 1}, next_state['stock'])\\n        # input state still holds the mutated values (it was mutated by caller)\\n        self.assertEqual({'A': 100, 'B': 1}, state['stock'])\\n\\n    def test_replay_returns_detached_data(self):\\n        state = empty_state()\\n        state = apply_event(state, reserve('e1', 'r1', []))\\n        replay = apply_event(state, reserve('e1', 'r1', []))\\n        replay['stock']['X'] = 1\\n        replay['requests']['r1']['K'] = 5\\n        replay['seen']['e1']['id'] = 'z'\\n        self.assertEqual({}, state['stock'])\\n        self.assertEqual({'r1': {}}, state['requests'])\\n        self.assertEqual('e1', state['seen']['e1']['id'])\\n\\n\\nif __name__ == '__main__':\\n    unittest.main()\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792417500-RVZCt49uOYXBS6auJpfh",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "file_editor: {\"command\": \"create\", \"path\": \"/workspace/test_reducer.py\", \"file_text\": \"import unittest\\nfrom copy import deepcopy\\n\\nfrom reducer import empty_state, apply_event\\n\\n\\ndef restock(eid, sku, qty):\\n    return {'id': eid, 'op': 'restock', 'sku': sku, 'qty': qty}\\n\\n\\ndef reserve(eid, request, lines):\\n    # lines: list of [sku, qty] pairs, canonical form (aggregated/sorted)\\n    return {'id': eid, 'op': 'reserve', 'request': request, 'lines': list(lines)}\\n\\n\\ndef cancel(eid, request):\\n    return {'id': eid, 'op': 'cancel', 'request': request}\\n\\n\\nclass ReducerTest(unittest.TestCase):\\n    def test_empty_state(self):\\n        st = empty_state()\\n        self.assertEqual({'stock': {}, 'requests': {}, 'seen': {}}, st)\\n\\n    def test_restock_introduces_and_adds(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 5))\\n        self.assertEqual({'A': 5}, state['stock'])\\n        state = apply_event(state, restock('e2', 'A', 3))\\n        self.assertEqual({'A': 8}, state['stock'])\\n        self.assertIn('e1', state['seen'])\\n        self.assertIn('e2', state['seen'])\\n\\n    def test_reserve_requires_inactive_request(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        state = apply_event(state, reserve('e2', 'r1', [['A', 2]]))\\n        # request now active; re-reserving with same ID must fail\\n        with self.assertRaises(ValueError):\\n            apply_event(state, reserve('e3', 'r1', [['A', 1]]))\\n        # failure must not alter state\\n        self.assertEqual({'A': 8}, state['stock'])\\n        self.assertEqual({'A': 2}, state['requests']['r1'])\\n\\n    def test_reserve_requires_all_sku_present(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        with self.assertRaises(ValueError):\\n            apply_event(state, reserve('e2', 'r1', [['A', 1], ['B', 1]]))\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        self.assertNotIn('e2', state['seen'])\\n\\n    def test_reserve_atomic_deduction(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 2))\\n        state = apply_event(state, restock('e2', 'B', 5))\\n        with self.assertRaises(ValueError):\\n            # aggregate demand exceeds stock for B\\n            apply_event(state, reserve('e3', 'r1', [['A', 1], ['B', 6]]))\\n        # no partial deduction\\n        self.assertEqual({'A': 2, 'B': 5}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        self.assertNotIn('e3', state['seen'])\\n\\n    def test_reserve_sufficient_stock_aggregate_deduces(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        state = apply_event(state, restock('e2', 'B', 10))\\n        state = apply_event(state, reserve('e3', 'r1', [['A', 3], ['B', 4]]))\\n        self.assertEqual({'A': 7, 'B': 6}, state['stock'])\\n        self.assertEqual({'A': 3, 'B': 4}, state['requests']['r1'])\\n\\n    def test_empty_reserve_creates_active_empty_request(self):\\n        state = empty_state()\\n        state = apply_event(state, reserve('e1', 'r1', []))\\n        self.assertEqual({'r1': {}}, state['requests'])\\n        self.assertIn('e1', state['seen'])\\n        # r1 is now active; cannot reserve same ID again\\n        with self.assertRaises(ValueError):\\n            apply_event(state, reserve('e2', 'r1', []))\\n        # and cannot cancel an empty request's cancellation double? cancel restores nothing and removes\\n        state = apply_event(state, cancel('e3', 'r1'))\\n        self.assertNotIn('r1', state['requests'])\\n\\n    def test_cancel_restores_and_removes_and_reuse(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        state = apply_event(state, reserve('e2', 'r1', [['A', 4]]))\\n        self.assertEqual({'A': 6}, state['stock'])\\n        state = apply_event(state, cancel('e3', 'r1'))\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        # request ID reusable with a new event id\\n        state = apply_event(state, reserve('e4', 'r1', [['A', 2]]))\\n        self.assertEqual({'A': 8}, state['stock'])\\n        self.assertEqual({'A': 2}, state['requests']['r1'])\\n\\n    def test_cancel_unknown_request_raises(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 5))\\n        with self.assertRaises(ValueError):\\n            apply_event(state, cancel('e2', 'nope'))\\n        self.assertEqual({'A': 5}, state['stock'])\\n        self.assertNotIn('e2', state['seen'])\\n\\n    def test_seen_replay_equal_event_returns_no_change_detached(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 5))\\n        ev = restock('e1', 'A', 5)\\n        state2 = apply_event(state, ev)\\n        self.assertEqual(state, state2)\\n        self.assertNotIn('e2', state2['seen'])\\n        self.assertEqual({'A': 5}, state2['stock'])\\n        # replay must be detached\\n        state2['stock']['A'] = 999\\n        self.assertEqual({'A': 5}, state['stock'])\\n\\n    def test_seen_check_before_business_preconditions(self):\\n        # an event that would fail a business precondition must still replay\\n        # if its ID was seen with an equal canonical event.\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 5))\\n        state = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\\n        # cancel to free r1, but e2 id must remain in seen\\n        state = apply_event(state, cancel('e3', 'r1'))\\n        # replay of reserve e2 with same canonical event returns unchanged state\\n        replay = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\\n        self.assertEqual(state, replay)\\n        self.assertNotIn('r1', replay['requests'])\\n\\n    def test_seen_conflicting_event_raises_even_after_cancel(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        state = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\\n        state = apply_event(state, cancel('e3', 'r1'))\\n        # reusing id e2 for a different event must raise even after cancellation\\n        with self.assertRaises(ValueError):\\n            apply_event(state, restock('e2', 'B', 5))\\n        self.assertEqual(state, state)\\n        self.assertNotIn('B', state['stock'])\\n\\n    def test_conflicting_event_raises_and_rejects_no_seen_entry(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 5))\\n        with self.assertRaises(ValueError):\\n            apply_event(state, restock('e1', 'A', 7))  # same id, different event\\n        self.assertNotIn('B', state['stock'])\\n        self.assertEqual({'A': 5}, state['stock'])\\n        # seen still holds original e1\\n        self.assertEqual(restock('e1', 'A', 5), state['seen']['e1'])\\n\\n    def test_reserve_insufficient_stock_raises(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 2))\\n        with self.assertRaises(ValueError):\\n            apply_event(state, reserve('e2', 'r1', [['A', 3]]))\\n        self.assertEqual({'A': 2}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        self.assertNotIn('e2', state['seen'])\\n\\n    def test_reserve_unknown_stock_raises(self):\\n        state = empty_state()\\n        with self.assertRaises(ValueError):\\n            apply_event(state, reserve('e1', 'r1', [['Z', 1]]))\\n        self.assertEqual({}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        self.assertNotIn('e1', state['seen'])\\n\\n    def test_detachment_success_and_no_alias_into_event(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        ev = reserve('e2', 'r1', [['A', 3]])\\n        state2 = apply_event(state, ev)\\n        # input state unchanged\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        # returned state detached: mutate returned nested objects\\n        state2['stock']['A'] = 1\\n        state2['stock']['NEW'] = 1\\n        state2['requests']['r1']['A'] = 999\\n        state2['requests']['other'] = {}\\n        state2['seen']['e2']['qty'] = 999\\n        state2['seen']['new'] = {'x': 1}\\n        # input untouched\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertEqual({'r1': {'A': 3}}, state2_baseline_check()['requests'])\\n\\n    @staticmethod\\n    def state2_baseline_check():\\n        # helper placeholder replaced by real assertions inline\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        return apply_event(state, reserve('e2', 'r1', [['A', 3]]))\\n\\n    def test_detachment_of_returned_reserve_storage_from_event(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        ev = reserve('e2', 'r1', [['A', 3]])\\n        state2 = apply_event(state, ev)\\n        # mutate the event after application; should not affect returned state\\n        ev['lines'][0][1] = 999\\n        ev['lines'][0][0] = 'CHANGED'\\n        ev['id'] = 'mutated'\\n        self.assertEqual({'A': 3}, state2['requests']['r1'])\\n        self.assertEqual('e2', state2['seen']['e2']['id'])\\n\\n    def test_detachment_input_unchanged_on_failure(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 5))\\n        snapshot = deepcopy(state)\\n        with self.assertRaises(ValueError):\\n            apply_event(state, reserve('e2', 'r1', [['A', 99]]))\\n        self.assertEqual(snapshot, state)\\n        # nested identity preserved (untouched)\\n        orig_stock = state['stock']\\n        with self.assertRaises(ValueError):\\n            apply_event(state, reserve('e3', 'r1', [['B', 1]]))\\n        self.assertIs(orig_stock, state['stock'])\\n\\n    def test_restock_aliasing_does_not_affect_input(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 5))\\n        state['stock']['A'] = 100\\n        state['stock']['B'] = 1\\n        state['seen']['tampered'] = {'id': 'x'}\\n        next_state = apply_event(state, restock('e2', 'A', 1))\\n        # new event processed normally; existing keys preserved\\n        self.assertEqual({'A': 101, 'B': 1}, next_state['stock'])\\n        # input state still holds the mutated values (it was mutated by caller)\\n        self.assertEqual({'A': 100, 'B': 1}, state['stock'])\\n\\n    def test_replay_returns_detached_data(self):\\n        state = empty_state()\\n        state = apply_event(state, reserve('e1', 'r1', []))\\n        replay = apply_event(state, reserve('e1', 'r1', []))\\n        replay['stock']['X'] = 1\\n        replay['requests']['r1']['K'] = 5\\n        replay['seen']['e1']['id'] = 'z'\\n        self.assertEqual({}, state['stock'])\\n        self.assertEqual({'r1': {}}, state['requests'])\\n        self.assertEqual('e1', state['seen']['e1']['id'])\\n\\n\\nif __name__ == '__main__':\\n    unittest.main()\"}",
  "kind": "ActionEvent",
  "thought": []
}

{
  "id": "7bd50663-22d2-4bb2-bcf3-67609acb572c",
  "timestamp": "2026-10-19T08:45:52.211895",
  "source": "environment",
  "parent_id": "4491889e-b590-46f9-8c97-b65ed97937a7",
  "tool_name": "file_editor",
  "tool_call_id": "call_efddb690dcca45e4a158f486",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Updated /workspace/test_reducer.py\nimport unittest\nfrom copy import deepcopy\n\nfrom reducer import empty_state, apply_event\n\n\ndef restock(eid, sku, qty):\n    return {'id': eid, 'op': 'restock', 'sku': sku, 'qty': qty}\n\n\ndef reserve(eid, request, lines):\n    # lines: list of [sku, qty] pairs, canonical form (aggregated/sorted)\n    return {'id': eid, 'op': 'reserve', 'request': request, 'lines': list(lines)}\n\n\ndef cancel(eid, request):\n    return {'id': eid, 'op': 'cancel', 'request': request}\n\n\nclass ReducerTest(unittest.TestCase):\n    def test_empty_state(self):\n        st = empty_state()\n        self.assertEqual({'stock': {}, 'requests': {}, 'seen': {}}, st)\n\n    def test_restock_introduces_and_adds(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        self.assertEqual({'A': 5}, state['stock'])\n        state = apply_event(state, restock('e2', 'A', 3))\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertIn('e1', state['seen'])\n        self.assertIn('e2', state['seen'])\n\n    def test_reserve_requires_inactive_request(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 2]]))\n        # request now active; re-reserving with same ID must fail\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e3', 'r1', [['A', 1]]))\n        # failure must not alter state\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertEqual({'A': 2}, state['requests']['r1'])\n\n    def test_reserve_requires_all_sku_present(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 1], ['B', 1]]))\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_reserve_atomic_deduction(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 2))\n        state = apply_event(state, restock('e2', 'B', 5))\n        with self.assertRaises(ValueError):\n            # aggregate demand exceeds stock for B\n            apply_event(state, reserve('e3', 'r1', [['A', 1], ['B', 6]]))\n        # no partial deduction\n        self.assertEqual({'A': 2, 'B': 5}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e3', state['seen'])\n\n    def test_reserve_sufficient_stock_aggregate_deduces(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, restock('e2', 'B', 10))\n        state = apply_event(state, reserve('e3', 'r1', [['A', 3], ['B', 4]]))\n        self.assertEqual({'A': 7, 'B': 6}, state['stock'])\n        self.assertEqual({'A': 3, 'B': 4}, state['requests']['r1'])\n\n    def test_empty_reserve_creates_active_empty_request(self):\n        state = empty_state()\n        state = apply_event(state, reserve('e1', 'r1', []))\n        self.assertEqual({'r1': {}}, state['requests'])\n        self.assertIn('e1', state['seen'])\n        # r1 is now active; cannot reserve same ID again\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', []))\n        # and cannot cancel an empty request's cancellation double? cancel restores nothing and removes\n        state = apply_event(state, cancel('e3', 'r1'))\n        self.assertNotIn('r1', state['requests'])\n\n    def test_cancel_restores_and_removes_and_reuse(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 4]]))\n        self.assertEqual({'A': 6}, state['stock'])\n        state = apply_event(state, cancel('e3', 'r1'))\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        # request ID reusable with a new event id\n        state = apply_event(state, reserve('e4', 'r1', [['A', 2]]))\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertEqual({'A': 2}, state['requests']['r1'])\n\n    def test_cancel_unknown_request_raises(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        with self.assertRaises(ValueError):\n            apply_event(state, cancel('e2', 'nope'))\n        self.assertEqual({'A': 5}, state['stock'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_seen_replay_equal_event_returns_no_change_detached(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        ev = restock('e1', 'A', 5)\n        state2 = apply_event(state, ev)\n        self.assertEqual(state, state2)\n        self.assertNotIn('e2', state2['seen'])\n        self.assertEqual({'A': 5}, state2['stock'])\n        # replay must be detached\n        state2['stock']['A'] = 999\n        self.assertEqual({'A': 5}, state['stock'])\n\n    def test_seen_check_before_business_preconditions(self):\n        # an event that would fail a business precondition must still replay\n        # if its ID was seen with an equal canonical event.\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        # cancel to free r1, but e2 id must remain in seen\n        state = apply_event(state, cancel('e3', 'r1'))\n        # replay of reserve e2 with same canonical event returns unchanged state\n        replay = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        self.assertEqual(state, replay)\n        self.assertNotIn('r1', replay['requests'])\n\n    def test_seen_conflicting_event_raises_even_after_cancel(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        state = apply_event(state, cancel('e3', 'r1'))\n        # reusing id e2 for a different event must raise even after cancellation\n        with self.assertRaises(ValueError):\n            apply_event(state, restock('e2', 'B', 5))\n        self.assertEqual(state, state)\n        self.assertNotIn('B', state['stock'])\n\n    def test_conflicting_event_raises_and_rejects_no_seen_entry(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        with self.assertRaises(ValueError):\n            apply_event(state, restock('e1', 'A', 7))  # same id, different event\n        self.assertNotIn('B', state['stock'])\n        self.assertEqual({'A': 5}, state['stock'])\n        # seen still holds original e1\n        self.assertEqual(restock('e1', 'A', 5), state['seen']['e1'])\n\n    def test_reserve_insufficient_stock_raises(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 2))\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        self.assertEqual({'A': 2}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_reserve_unknown_stock_raises(self):\n        state = empty_state()\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e1', 'r1', [['Z', 1]]))\n        self.assertEqual({}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e1', state['seen'])\n\n    def test_detachment_success_and_no_alias_into_event(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        ev = reserve('e2', 'r1', [['A', 3]])\n        state2 = apply_event(state, ev)\n        # input state unchanged\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        # returned state detached: mutate returned nested objects\n        state2['stock']['A'] = 1\n        state2['stock']['NEW'] = 1\n        state2['requests']['r1']['A'] = 999\n        state2['requests']['other'] = {}\n        state2['seen']['e2']['qty'] = 999\n        state2['seen']['new'] = {'x': 1}\n        # input untouched\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertEqual({'r1': {'A': 3}}, state2_baseline_check()['requests'])\n\n    @staticmethod\n    def state2_baseline_check():\n        # helper placeholder replaced by real assertions inline\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        return apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n\n    def test_detachment_of_returned_reserve_storage_from_event(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        ev = reserve('e2', 'r1', [['A', 3]])\n        state2 = apply_event(state, ev)\n        # mutate the event after application; should not affect returned state\n        ev['lines'][0][1] = 999\n        ev['lines'][0][0] = 'CHANGED'\n        ev['id'] = 'mutated'\n        self.assertEqual({'A': 3}, state2['requests']['r1'])\n        self.assertEqual('e2', state2['seen']['e2']['id'])\n\n    def test_detachment_input_unchanged_on_failure(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        snapshot = deepcopy(state)\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 99]]))\n        self.assertEqual(snapshot, state)\n        # nested identity preserved (untouched)\n        orig_stock = state['stock']\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e3', 'r1', [['B', 1]]))\n        self.assertIs(orig_stock, state['stock'])\n\n    def test_restock_aliasing_does_not_affect_input(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        state['stock']['A'] = 100\n        state['stock']['B'] = 1\n        state['seen']['tampered'] = {'id': 'x'}\n        next_state = apply_event(state, restock('e2', 'A', 1))\n        # new event processed normally; existing keys preserved\n        self.assertEqual({'A': 101, 'B': 1}, next_state['stock'])\n        # input state still holds the mutated values (it was mutated by caller)\n        self.assertEqual({'A': 100, 'B': 1}, state['stock'])\n\n    def test_replay_returns_detached_data(self):\n        state = empty_state()\n        state = apply_event(state, reserve('e1', 'r1', []))\n        replay = apply_event(state, reserve('e1', 'r1', []))\n        replay['stock']['X'] = 1\n        replay['requests']['r1']['K'] = 5\n        replay['seen']['e1']['id'] = 'z'\n        self.assertEqual({}, state['stock'])\n        self.assertEqual({'r1': {}}, state['requests'])\n        self.assertEqual('e1', state['seen']['e1']['id'])\n\n\nif __name__ == '__main__':\n    unittest.main()"
      }
    ],
    "is_error": false,
    "command": "create",
    "path": "/workspace/test_reducer.py",
    "prev_exist": true,
    "old_content": null,
    "new_content": null,
    "kind": "FileEditorObservation"
  },
  "action_id": "4491889e-b590-46f9-8c97-b65ed97937a7",
  "extended_content": [],
  "kind": "ObservationEvent"
}

{
  "id": "09e672b3-370c-4d7c-8d61-06b41182e09d",
  "timestamp": "2026-10-19T08:46:02.074375",
  "source": "agent",
  "parent_id": "7bd50663-22d2-4bb2-bcf3-67609acb572c",
  "responses_reasoning_item": null,
  "action": {
    "command": "str_replace",
    "path": "/workspace/test_reducer.py",
    "file_text": null,
    "old_str": "def test_detachment_success_and_no_alias_into_event(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        ev = reserve('e2', 'r1', [['A', 3]])\n        state2 = apply_event(state, ev)\n        # input state unchanged\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        # returned state detached: mutate returned nested objects\n        state2['stock']['A'] = 1\n        state2['stock']['NEW'] = 1\n        state2['requests']['r1']['A'] = 999\n        state2['requests']['other'] = {}\n        state2['seen']['e2']['qty'] = 999\n        state2['seen']['new'] = {'x': 1}\n        # input untouched\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertEqual({'r1': {'A': 3}}, state2_baseline_check()['requests'])\n\n    @staticmethod\n    def state2_baseline_check():\n        # helper placeholder replaced by real assertions inline\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        return apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n\n    def test_detachment_of_returned_reserve_storage_from_event(self):",
    "new_str": "def test_detachment_success_and_no_alias_into_event(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        ev = reserve('e2', 'r1', [['A', 3]])\n        state2 = apply_event(state, ev)\n        # input state unchanged\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        # returned state detached: mutate returned nested objects\n        state2['stock']['A'] = 1\n        state2['stock']['NEW'] = 1\n        state2['requests']['r1']['A'] = 999\n        state2['requests']['other'] = {}\n        state2['seen']['e2']['qty'] = 999\n        state2['seen']['new'] = {'x': 1}\n        # input untouched\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertEqual({'r1': {'A': 3}}, state2_mutated_copy_reference()['requests'])\n\n    def test_detachment_of_returned_reserve_storage_from_event(self):",
    "insert_line": null,
    "view_range": null,
    "kind": "FileEditorAction"
  },
  "tool_name": "file_editor",
  "tool_call_id": "call_a63bb72678b946a79033eafe",
  "tool_call": {
    "id": "call_a63bb72678b946a79033eafe",
    "responses_item_id": null,
    "name": "file_editor",
    "arguments": "{\"command\": \"str_replace\", \"path\": \"/workspace/test_reducer.py\", \"old_str\": \"def test_detachment_success_and_no_alias_into_event(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        ev = reserve('e2', 'r1', [['A', 3]])\\n        state2 = apply_event(state, ev)\\n        # input state unchanged\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        # returned state detached: mutate returned nested objects\\n        state2['stock']['A'] = 1\\n        state2['stock']['NEW'] = 1\\n        state2['requests']['r1']['A'] = 999\\n        state2['requests']['other'] = {}\\n        state2['seen']['e2']['qty'] = 999\\n        state2['seen']['new'] = {'x': 1}\\n        # input untouched\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertEqual({'r1': {'A': 3}}, state2_baseline_check()['requests'])\\n\\n    @staticmethod\\n    def state2_baseline_check():\\n        # helper placeholder replaced by real assertions inline\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        return apply_event(state, reserve('e2', 'r1', [['A', 3]]))\\n\\n    def test_detachment_of_returned_reserve_storage_from_event(self):\", \"new_str\": \"def test_detachment_success_and_no_alias_into_event(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        ev = reserve('e2', 'r1', [['A', 3]])\\n        state2 = apply_event(state, ev)\\n        # input state unchanged\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        # returned state detached: mutate returned nested objects\\n        state2['stock']['A'] = 1\\n        state2['stock']['NEW'] = 1\\n        state2['requests']['r1']['A'] = 999\\n        state2['requests']['other'] = {}\\n        state2['seen']['e2']['qty'] = 999\\n        state2['seen']['new'] = {'x': 1}\\n        # input untouched\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertEqual({'r1': {'A': 3}}, state2_mutated_copy_reference()['requests'])\\n\\n    def test_detachment_of_returned_reserve_storage_from_event(self):\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792417552-GpnNshpAg58GFwbK3H42",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "file_editor: {\"command\": \"str_replace\", \"path\": \"/workspace/test_reducer.py\", \"old_str\": \"def test_detachment_success_and_no_alias_into_event(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        ev = reserve('e2', 'r1', [['A', 3]])\\n        state2 = apply_event(state, ev)\\n        # input state unchanged\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        # returned state detached: mutate returned nested objects\\n        state2['stock']['A'] = 1\\n        state2['stock']['NEW'] = 1\\n        state2['requests']['r1']['A'] = 999\\n        state2['requests']['other'] = {}\\n        state2['seen']['e2']['qty'] = 999\\n        state2['seen']['new'] = {'x': 1}\\n        # input untouched\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertEqual({'r1': {'A': 3}}, state2_baseline_check()['requests'])\\n\\n    @staticmethod\\n    def state2_baseline_check():\\n        # helper placeholder replaced by real assertions inline\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        return apply_event(state, reserve('e2', 'r1', [['A', 3]]))\\n\\n    def test_detachment_of_returned_reserve_storage_from_event(self):\", \"new_str\": \"def test_detachment_success_and_no_alias_into_event(self):\\n        state = empty_state()\\n        state = apply_event(state, restock('e1', 'A', 10))\\n        ev = reserve('e2', 'r1', [['A', 3]])\\n        state2 = apply_event(state, ev)\\n        # input state unchanged\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        # returned state detached: mutate returned nested objects\\n        state2['stock']['A'] = 1\\n        state2['stock']['NEW'] = 1\\n        state2['requests']['r1']['A'] = 999\\n        state2['requests']['other'] = {}\\n        state2['seen']['e2']['qty'] = 999\\n        state2['seen']['new'] = {'x': 1}\\n        # input untouched\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertEqual({'r1': {'A': 3}}, state2_mutated_copy_reference()['requests'])\\n\\n    def test_detachment_of_returned_reserve_storage_from_event(self):\"}",
  "kind": "ActionEvent",
  "thought": []
}

{
  "id": "2db472bf-5621-4ee7-8a05-6781b0a81b1a",
  "timestamp": "2026-10-19T08:46:02.293454",
  "source": "environment",
  "parent_id": "09e672b3-370c-4d7c-8d61-06b41182e09d",
  "tool_name": "file_editor",
  "tool_call_id": "call_a63bb72678b946a79033eafe",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Updated /workspace/test_reducer.py\nimport unittest\nfrom copy import deepcopy\n\nfrom reducer import empty_state, apply_event\n\n\ndef restock(eid, sku, qty):\n    return {'id': eid, 'op': 'restock', 'sku': sku, 'qty': qty}\n\n\ndef reserve(eid, request, lines):\n    # lines: list of [sku, qty] pairs, canonical form (aggregated/sorted)\n    return {'id': eid, 'op': 'reserve', 'request': request, 'lines': list(lines)}\n\n\ndef cancel(eid, request):\n    return {'id': eid, 'op': 'cancel', 'request': request}\n\n\nclass ReducerTest(unittest.TestCase):\n    def test_empty_state(self):\n        st = empty_state()\n        self.assertEqual({'stock': {}, 'requests': {}, 'seen': {}}, st)\n\n    def test_restock_introduces_and_adds(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        self.assertEqual({'A': 5}, state['stock'])\n        state = apply_event(state, restock('e2', 'A', 3))\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertIn('e1', state['seen'])\n        self.assertIn('e2', state['seen'])\n\n    def test_reserve_requires_inactive_request(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 2]]))\n        # request now active; re-reserving with same ID must fail\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e3', 'r1', [['A', 1]]))\n        # failure must not alter state\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertEqual({'A': 2}, state['requests']['r1'])\n\n    def test_reserve_requires_all_sku_present(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 1], ['B', 1]]))\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_reserve_atomic_deduction(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 2))\n        state = apply_event(state, restock('e2', 'B', 5))\n        with self.assertRaises(ValueError):\n            # aggregate demand exceeds stock for B\n            apply_event(state, reserve('e3', 'r1', [['A', 1], ['B', 6]]))\n        # no partial deduction\n        self.assertEqual({'A': 2, 'B': 5}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e3', state['seen'])\n\n    def test_reserve_sufficient_stock_aggregate_deduces(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, restock('e2', 'B', 10))\n        state = apply_event(state, reserve('e3', 'r1', [['A', 3], ['B', 4]]))\n        self.assertEqual({'A': 7, 'B': 6}, state['stock'])\n        self.assertEqual({'A': 3, 'B': 4}, state['requests']['r1'])\n\n    def test_empty_reserve_creates_active_empty_request(self):\n        state = empty_state()\n        state = apply_event(state, reserve('e1', 'r1', []))\n        self.assertEqual({'r1': {}}, state['requests'])\n        self.assertIn('e1', state['seen'])\n        # r1 is now active; cannot reserve same ID again\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', []))\n        # and cannot cancel an empty request's cancellation double? cancel restores nothing and removes\n        state = apply_event(state, cancel('e3', 'r1'))\n        self.assertNotIn('r1', state['requests'])\n\n    def test_cancel_restores_and_removes_and_reuse(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 4]]))\n        self.assertEqual({'A': 6}, state['stock'])\n        state = apply_event(state, cancel('e3', 'r1'))\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        # request ID reusable with a new event id\n        state = apply_event(state, reserve('e4', 'r1', [['A', 2]]))\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertEqual({'A': 2}, state['requests']['r1'])\n\n    def test_cancel_unknown_request_raises(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        with self.assertRaises(ValueError):\n            apply_event(state, cancel('e2', 'nope'))\n        self.assertEqual({'A': 5}, state['stock'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_seen_replay_equal_event_returns_no_change_detached(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        ev = restock('e1', 'A', 5)\n        state2 = apply_event(state, ev)\n        self.assertEqual(state, state2)\n        self.assertNotIn('e2', state2['seen'])\n        self.assertEqual({'A': 5}, state2['stock'])\n        # replay must be detached\n        state2['stock']['A'] = 999\n        self.assertEqual({'A': 5}, state['stock'])\n\n    def test_seen_check_before_business_preconditions(self):\n        # an event that would fail a business precondition must still replay\n        # if its ID was seen with an equal canonical event.\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        # cancel to free r1, but e2 id must remain in seen\n        state = apply_event(state, cancel('e3', 'r1'))\n        # replay of reserve e2 with same canonical event returns unchanged state\n        replay = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        self.assertEqual(state, replay)\n        self.assertNotIn('r1', replay['requests'])\n\n    def test_seen_conflicting_event_raises_even_after_cancel(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        state = apply_event(state, cancel('e3', 'r1'))\n        # reusing id e2 for a different event must raise even after cancellation\n        with self.assertRaises(ValueError):\n            apply_event(state, restock('e2', 'B', 5))\n        self.assertEqual(state, state)\n        self.assertNotIn('B', state['stock'])\n\n    def test_conflicting_event_raises_and_rejects_no_seen_entry(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        with self.assertRaises(ValueError):\n            apply_event(state, restock('e1', 'A', 7))  # same id, different event\n        self.assertNotIn('B', state['stock'])\n        self.assertEqual({'A': 5}, state['stock'])\n        # seen still holds original e1\n        self.assertEqual(restock('e1', 'A', 5), state['seen']['e1'])\n\n    def test_reserve_insufficient_stock_raises(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 2))\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        self.assertEqual({'A': 2}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_reserve_unknown_stock_raises(self):\n        state = empty_state()\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e1', 'r1', [['Z', 1]]))\n        self.assertEqual({}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e1', state['seen'])\n\n    def test_detachment_success_and_no_alias_into_event(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        ev = reserve('e2', 'r1', [['A', 3]])\n        state2 = apply_event(state, ev)\n        # input state unchanged\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        # returned state detached: mutate returned nested objects\n        state2['stock']['A'] = 1\n        state2['stock']['NEW'] = 1\n        state2['requests']['r1']['A'] = 999\n        state2['requests']['other'] = {}\n        state2['seen']['e2']['qty'] = 999\n        state2['seen']['new'] = {'x': 1}\n        # input untouched\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertEqual({'r1': {'A': 3}}, state2_mutated_copy_reference()['requests'])\n\n    def test_detachment_of_returned_reserve_storage_from_event(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        ev = reserve('e2', 'r1', [['A', 3]])\n        state2 = apply_event(state, ev)\n        # mutate the event after application; should not affect returned state\n        ev['lines'][0][1] = 999\n        ev['lines'][0][0] = 'CHANGED'\n        ev['id'] = 'mutated'\n        self.assertEqual({'A': 3}, state2['requests']['r1'])\n        self.assertEqual('e2', state2['seen']['e2']['id'])\n\n    def test_detachment_input_unchanged_on_failure(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        snapshot = deepcopy(state)\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 99]]))\n        self.assertEqual(snapshot, state)\n        # nested identity preserved (untouched)\n        orig_stock = state['stock']\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e3', 'r1', [['B', 1]]))\n        self.assertIs(orig_stock, state['stock'])\n\n    def test_restock_aliasing_does_not_affect_input(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        state['stock']['A'] = 100\n        state['stock']['B'] = 1\n        state['seen']['tampered'] = {'id': 'x'}\n        next_state = apply_event(state, restock('e2', 'A', 1))\n        # new event processed normally; existing keys preserved\n        self.assertEqual({'A': 101, 'B': 1}, next_state['stock'])\n        # input state still holds the mutated values (it was mutated by caller)\n        self.assertEqual({'A': 100, 'B': 1}, state['stock'])\n\n    def test_replay_returns_detached_data(self):\n        state = empty_state()\n        state = apply_event(state, reserve('e1', 'r1', []))\n        replay = apply_event(state, reserve('e1', 'r1', []))\n        replay['stock']['X'] = 1\n        replay['requests']['r1']['K'] = 5\n        replay['seen']['e1']['id'] = 'z'\n        self.assertEqual({}, state['stock'])\n        self.assertEqual({'r1': {}}, state['requests'])\n        self.assertEqual('e1', state['seen']['e1']['id'])\n\n\nif __name__ == '__main__':\n    unittest.main()"
      }
    ],
    "is_error": false,
    "command": "str_replace",
    "path": "/workspace/test_reducer.py",
    "prev_exist": true,
    "old_content": null,
    "new_content": null,
    "kind": "FileEditorObservation"
  },
  "action_id": "09e672b3-370c-4d7c-8d61-06b41182e09d",
  "extended_content": [],
  "kind": "ObservationEvent"
}

{
  "id": "60d13ca5-5499-44bb-b7c7-6b4460b040d6",
  "timestamp": "2026-10-19T08:46:07.612717",
  "source": "agent",
  "parent_id": "2db472bf-5621-4ee7-8a05-6781b0a81b1a",
  "responses_reasoning_item": null,
  "action": {
    "command": "str_replace",
    "path": "/workspace/test_reducer.py",
    "file_text": null,
    "old_str": "# input untouched\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertEqual({'r1': {'A': 3}}, state2_mutated_copy_reference()['requests'])",
    "new_str": "# input untouched\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertEqual({'r1': {'A': 2}}, state2['requests'])",
    "insert_line": null,
    "view_range": null,
    "kind": "FileEditorAction"
  },
  "tool_name": "file_editor",
  "tool_call_id": "call_a714eb92212c467cba833529",
  "tool_call": {
    "id": "call_a714eb92212c467cba833529",
    "responses_item_id": null,
    "name": "file_editor",
    "arguments": "{\"command\": \"str_replace\", \"path\": \"/workspace/test_reducer.py\", \"old_str\": \"# input untouched\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertEqual({'r1': {'A': 3}}, state2_mutated_copy_reference()['requests'])\", \"new_str\": \"# input untouched\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertEqual({'r1': {'A': 2}}, state2['requests'])\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792417562-cuz9SIr5h3vCVRcf8E6q",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "file_editor: {\"command\": \"str_replace\", \"path\": \"/workspace/test_reducer.py\", \"old_str\": \"# input untouched\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertEqual({'r1': {'A': 3}}, state2_mutated_copy_reference()['requests'])\", \"new_str\": \"# input untouched\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertEqual({'r1': {'A': 2}}, state2['requests'])\"}",
  "kind": "ActionEvent",
  "thought": []
}

{
  "id": "9f9a7a76-f6cc-415a-ab12-64928829b377",
  "timestamp": "2026-10-19T08:46:07.840525",
  "source": "environment",
  "parent_id": "60d13ca5-5499-44bb-b7c7-6b4460b040d6",
  "tool_name": "file_editor",
  "tool_call_id": "call_a714eb92212c467cba833529",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Updated /workspace/test_reducer.py\nimport unittest\nfrom copy import deepcopy\n\nfrom reducer import empty_state, apply_event\n\n\ndef restock(eid, sku, qty):\n    return {'id': eid, 'op': 'restock', 'sku': sku, 'qty': qty}\n\n\ndef reserve(eid, request, lines):\n    # lines: list of [sku, qty] pairs, canonical form (aggregated/sorted)\n    return {'id': eid, 'op': 'reserve', 'request': request, 'lines': list(lines)}\n\n\ndef cancel(eid, request):\n    return {'id': eid, 'op': 'cancel', 'request': request}\n\n\nclass ReducerTest(unittest.TestCase):\n    def test_empty_state(self):\n        st = empty_state()\n        self.assertEqual({'stock': {}, 'requests': {}, 'seen': {}}, st)\n\n    def test_restock_introduces_and_adds(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        self.assertEqual({'A': 5}, state['stock'])\n        state = apply_event(state, restock('e2', 'A', 3))\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertIn('e1', state['seen'])\n        self.assertIn('e2', state['seen'])\n\n    def test_reserve_requires_inactive_request(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 2]]))\n        # request now active; re-reserving with same ID must fail\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e3', 'r1', [['A', 1]]))\n        # failure must not alter state\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertEqual({'A': 2}, state['requests']['r1'])\n\n    def test_reserve_requires_all_sku_present(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 1], ['B', 1]]))\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_reserve_atomic_deduction(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 2))\n        state = apply_event(state, restock('e2', 'B', 5))\n        with self.assertRaises(ValueError):\n            # aggregate demand exceeds stock for B\n            apply_event(state, reserve('e3', 'r1', [['A', 1], ['B', 6]]))\n        # no partial deduction\n        self.assertEqual({'A': 2, 'B': 5}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e3', state['seen'])\n\n    def test_reserve_sufficient_stock_aggregate_deduces(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, restock('e2', 'B', 10))\n        state = apply_event(state, reserve('e3', 'r1', [['A', 3], ['B', 4]]))\n        self.assertEqual({'A': 7, 'B': 6}, state['stock'])\n        self.assertEqual({'A': 3, 'B': 4}, state['requests']['r1'])\n\n    def test_empty_reserve_creates_active_empty_request(self):\n        state = empty_state()\n        state = apply_event(state, reserve('e1', 'r1', []))\n        self.assertEqual({'r1': {}}, state['requests'])\n        self.assertIn('e1', state['seen'])\n        # r1 is now active; cannot reserve same ID again\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', []))\n        # and cannot cancel an empty request's cancellation double? cancel restores nothing and removes\n        state = apply_event(state, cancel('e3', 'r1'))\n        self.assertNotIn('r1', state['requests'])\n\n    def test_cancel_restores_and_removes_and_reuse(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 4]]))\n        self.assertEqual({'A': 6}, state['stock'])\n        state = apply_event(state, cancel('e3', 'r1'))\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        # request ID reusable with a new event id\n        state = apply_event(state, reserve('e4', 'r1', [['A', 2]]))\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertEqual({'A': 2}, state['requests']['r1'])\n\n    def test_cancel_unknown_request_raises(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        with self.assertRaises(ValueError):\n            apply_event(state, cancel('e2', 'nope'))\n        self.assertEqual({'A': 5}, state['stock'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_seen_replay_equal_event_returns_no_change_detached(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        ev = restock('e1', 'A', 5)\n        state2 = apply_event(state, ev)\n        self.assertEqual(state, state2)\n        self.assertNotIn('e2', state2['seen'])\n        self.assertEqual({'A': 5}, state2['stock'])\n        # replay must be detached\n        state2['stock']['A'] = 999\n        self.assertEqual({'A': 5}, state['stock'])\n\n    def test_seen_check_before_business_preconditions(self):\n        # an event that would fail a business precondition must still replay\n        # if its ID was seen with an equal canonical event.\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        # cancel to free r1, but e2 id must remain in seen\n        state = apply_event(state, cancel('e3', 'r1'))\n        # replay of reserve e2 with same canonical event returns unchanged state\n        replay = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        self.assertEqual(state, replay)\n        self.assertNotIn('r1', replay['requests'])\n\n    def test_seen_conflicting_event_raises_even_after_cancel(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        state = apply_event(state, cancel('e3', 'r1'))\n        # reusing id e2 for a different event must raise even after cancellation\n        with self.assertRaises(ValueError):\n            apply_event(state, restock('e2', 'B', 5))\n        self.assertEqual(state, state)\n        self.assertNotIn('B', state['stock'])\n\n    def test_conflicting_event_raises_and_rejects_no_seen_entry(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        with self.assertRaises(ValueError):\n            apply_event(state, restock('e1', 'A', 7))  # same id, different event\n        self.assertNotIn('B', state['stock'])\n        self.assertEqual({'A': 5}, state['stock'])\n        # seen still holds original e1\n        self.assertEqual(restock('e1', 'A', 5), state['seen']['e1'])\n\n    def test_reserve_insufficient_stock_raises(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 2))\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        self.assertEqual({'A': 2}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_reserve_unknown_stock_raises(self):\n        state = empty_state()\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e1', 'r1', [['Z', 1]]))\n        self.assertEqual({}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e1', state['seen'])\n\n    def test_detachment_success_and_no_alias_into_event(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        ev = reserve('e2', 'r1', [['A', 3]])\n        state2 = apply_event(state, ev)\n        # input state unchanged\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        # returned state detached: mutate returned nested objects\n        state2['stock']['A'] = 1\n        state2['stock']['NEW'] = 1\n        state2['requests']['r1']['A'] = 999\n        state2['requests']['other'] = {}\n        state2['seen']['e2']['qty'] = 999\n        state2['seen']['new'] = {'x': 1}\n        # input untouched\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertEqual({'r1': {'A': 2}}, state2['requests'])\n\n    def test_detachment_of_returned_reserve_storage_from_event(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        ev = reserve('e2', 'r1', [['A', 3]])\n        state2 = apply_event(state, ev)\n        # mutate the event after application; should not affect returned state\n        ev['lines'][0][1] = 999\n        ev['lines'][0][0] = 'CHANGED'\n        ev['id'] = 'mutated'\n        self.assertEqual({'A': 3}, state2['requests']['r1'])\n        self.assertEqual('e2', state2['seen']['e2']['id'])\n\n    def test_detachment_input_unchanged_on_failure(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        snapshot = deepcopy(state)\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 99]]))\n        self.assertEqual(snapshot, state)\n        # nested identity preserved (untouched)\n        orig_stock = state['stock']\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e3', 'r1', [['B', 1]]))\n        self.assertIs(orig_stock, state['stock'])\n\n    def test_restock_aliasing_does_not_affect_input(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        state['stock']['A'] = 100\n        state['stock']['B'] = 1\n        state['seen']['tampered'] = {'id': 'x'}\n        next_state = apply_event(state, restock('e2', 'A', 1))\n        # new event processed normally; existing keys preserved\n        self.assertEqual({'A': 101, 'B': 1}, next_state['stock'])\n        # input state still holds the mutated values (it was mutated by caller)\n        self.assertEqual({'A': 100, 'B': 1}, state['stock'])\n\n    def test_replay_returns_detached_data(self):\n        state = empty_state()\n        state = apply_event(state, reserve('e1', 'r1', []))\n        replay = apply_event(state, reserve('e1', 'r1', []))\n        replay['stock']['X'] = 1\n        replay['requests']['r1']['K'] = 5\n        replay['seen']['e1']['id'] = 'z'\n        self.assertEqual({}, state['stock'])\n        self.assertEqual({'r1': {}}, state['requests'])\n        self.assertEqual('e1', state['seen']['e1']['id'])\n\n\nif __name__ == '__main__':\n    unittest.main()"
      }
    ],
    "is_error": false,
    "command": "str_replace",
    "path": "/workspace/test_reducer.py",
    "prev_exist": true,
    "old_content": null,
    "new_content": null,
    "kind": "FileEditorObservation"
  },
  "action_id": "60d13ca5-5499-44bb-b7c7-6b4460b040d6",
  "extended_content": [],
  "kind": "ObservationEvent"
}

{
  "id": "bf0ac3ee-7329-42bd-b354-8de070c9b3e6",
  "timestamp": "2026-10-19T08:46:17.620236",
  "source": "agent",
  "parent_id": "9f9a7a76-f6cc-415a-ab12-64928829b377",
  "responses_reasoning_item": null,
  "action": {
    "command": "str_replace",
    "path": "/workspace/test_reducer.py",
    "file_text": null,
    "old_str": "# input untouched\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertEqual({'r1': {'A': 2}}, state2['requests'])",
    "new_str": "# input untouched\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertEqual({}, state['seen'])",
    "insert_line": null,
    "view_range": null,
    "kind": "FileEditorAction"
  },
  "tool_name": "file_editor",
  "tool_call_id": "call_93c3fef1fde34fa99df89fd6",
  "tool_call": {
    "id": "call_93c3fef1fde34fa99df89fd6",
    "responses_item_id": null,
    "name": "file_editor",
    "arguments": "{\"command\": \"str_replace\", \"path\": \"/workspace/test_reducer.py\", \"old_str\": \"# input untouched\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertEqual({'r1': {'A': 2}}, state2['requests'])\", \"new_str\": \"# input untouched\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        self.assertEqual({}, state['seen'])\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792417568-RyczlkL6OWVoedJ4F9x0",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "file_editor: {\"command\": \"str_replace\", \"path\": \"/workspace/test_reducer.py\", \"old_str\": \"# input untouched\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertEqual({'r1': {'A': 2}}, state2['requests'])\", \"new_str\": \"# input untouched\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        self.assertEqual({}, state['seen'])\"}",
  "kind": "ActionEvent",
  "thought": []
}

{
  "id": "9d65e6e7-3421-4519-98a6-278ab3f6c0c4",
  "timestamp": "2026-10-19T08:46:17.845573",
  "source": "environment",
  "parent_id": "bf0ac3ee-7329-42bd-b354-8de070c9b3e6",
  "tool_name": "file_editor",
  "tool_call_id": "call_93c3fef1fde34fa99df89fd6",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Updated /workspace/test_reducer.py\nimport unittest\nfrom copy import deepcopy\n\nfrom reducer import empty_state, apply_event\n\n\ndef restock(eid, sku, qty):\n    return {'id': eid, 'op': 'restock', 'sku': sku, 'qty': qty}\n\n\ndef reserve(eid, request, lines):\n    # lines: list of [sku, qty] pairs, canonical form (aggregated/sorted)\n    return {'id': eid, 'op': 'reserve', 'request': request, 'lines': list(lines)}\n\n\ndef cancel(eid, request):\n    return {'id': eid, 'op': 'cancel', 'request': request}\n\n\nclass ReducerTest(unittest.TestCase):\n    def test_empty_state(self):\n        st = empty_state()\n        self.assertEqual({'stock': {}, 'requests': {}, 'seen': {}}, st)\n\n    def test_restock_introduces_and_adds(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        self.assertEqual({'A': 5}, state['stock'])\n        state = apply_event(state, restock('e2', 'A', 3))\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertIn('e1', state['seen'])\n        self.assertIn('e2', state['seen'])\n\n    def test_reserve_requires_inactive_request(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 2]]))\n        # request now active; re-reserving with same ID must fail\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e3', 'r1', [['A', 1]]))\n        # failure must not alter state\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertEqual({'A': 2}, state['requests']['r1'])\n\n    def test_reserve_requires_all_sku_present(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 1], ['B', 1]]))\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_reserve_atomic_deduction(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 2))\n        state = apply_event(state, restock('e2', 'B', 5))\n        with self.assertRaises(ValueError):\n            # aggregate demand exceeds stock for B\n            apply_event(state, reserve('e3', 'r1', [['A', 1], ['B', 6]]))\n        # no partial deduction\n        self.assertEqual({'A': 2, 'B': 5}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e3', state['seen'])\n\n    def test_reserve_sufficient_stock_aggregate_deduces(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, restock('e2', 'B', 10))\n        state = apply_event(state, reserve('e3', 'r1', [['A', 3], ['B', 4]]))\n        self.assertEqual({'A': 7, 'B': 6}, state['stock'])\n        self.assertEqual({'A': 3, 'B': 4}, state['requests']['r1'])\n\n    def test_empty_reserve_creates_active_empty_request(self):\n        state = empty_state()\n        state = apply_event(state, reserve('e1', 'r1', []))\n        self.assertEqual({'r1': {}}, state['requests'])\n        self.assertIn('e1', state['seen'])\n        # r1 is now active; cannot reserve same ID again\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', []))\n        # and cannot cancel an empty request's cancellation double? cancel restores nothing and removes\n        state = apply_event(state, cancel('e3', 'r1'))\n        self.assertNotIn('r1', state['requests'])\n\n    def test_cancel_restores_and_removes_and_reuse(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 4]]))\n        self.assertEqual({'A': 6}, state['stock'])\n        state = apply_event(state, cancel('e3', 'r1'))\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        # request ID reusable with a new event id\n        state = apply_event(state, reserve('e4', 'r1', [['A', 2]]))\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertEqual({'A': 2}, state['requests']['r1'])\n\n    def test_cancel_unknown_request_raises(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        with self.assertRaises(ValueError):\n            apply_event(state, cancel('e2', 'nope'))\n        self.assertEqual({'A': 5}, state['stock'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_seen_replay_equal_event_returns_no_change_detached(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        ev = restock('e1', 'A', 5)\n        state2 = apply_event(state, ev)\n        self.assertEqual(state, state2)\n        self.assertNotIn('e2', state2['seen'])\n        self.assertEqual({'A': 5}, state2['stock'])\n        # replay must be detached\n        state2['stock']['A'] = 999\n        self.assertEqual({'A': 5}, state['stock'])\n\n    def test_seen_check_before_business_preconditions(self):\n        # an event that would fail a business precondition must still replay\n        # if its ID was seen with an equal canonical event.\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        # cancel to free r1, but e2 id must remain in seen\n        state = apply_event(state, cancel('e3', 'r1'))\n        # replay of reserve e2 with same canonical event returns unchanged state\n        replay = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        self.assertEqual(state, replay)\n        self.assertNotIn('r1', replay['requests'])\n\n    def test_seen_conflicting_event_raises_even_after_cancel(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        state = apply_event(state, cancel('e3', 'r1'))\n        # reusing id e2 for a different event must raise even after cancellation\n        with self.assertRaises(ValueError):\n            apply_event(state, restock('e2', 'B', 5))\n        self.assertEqual(state, state)\n        self.assertNotIn('B', state['stock'])\n\n    def test_conflicting_event_raises_and_rejects_no_seen_entry(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        with self.assertRaises(ValueError):\n            apply_event(state, restock('e1', 'A', 7))  # same id, different event\n        self.assertNotIn('B', state['stock'])\n        self.assertEqual({'A': 5}, state['stock'])\n        # seen still holds original e1\n        self.assertEqual(restock('e1', 'A', 5), state['seen']['e1'])\n\n    def test_reserve_insufficient_stock_raises(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 2))\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        self.assertEqual({'A': 2}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_reserve_unknown_stock_raises(self):\n        state = empty_state()\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e1', 'r1', [['Z', 1]]))\n        self.assertEqual({}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e1', state['seen'])\n\n    def test_detachment_success_and_no_alias_into_event(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        ev = reserve('e2', 'r1', [['A', 3]])\n        state2 = apply_event(state, ev)\n        # input state unchanged\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        # returned state detached: mutate returned nested objects\n        state2['stock']['A'] = 1\n        state2['stock']['NEW'] = 1\n        state2['requests']['r1']['A'] = 999\n        state2['requests']['other'] = {}\n        state2['seen']['e2']['qty'] = 999\n        state2['seen']['new'] = {'x': 1}\n        # input untouched\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertEqual({}, state['seen'])\n\n    def test_detachment_of_returned_reserve_storage_from_event(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        ev = reserve('e2', 'r1', [['A', 3]])\n        state2 = apply_event(state, ev)\n        # mutate the event after application; should not affect returned state\n        ev['lines'][0][1] = 999\n        ev['lines'][0][0] = 'CHANGED'\n        ev['id'] = 'mutated'\n        self.assertEqual({'A': 3}, state2['requests']['r1'])\n        self.assertEqual('e2', state2['seen']['e2']['id'])\n\n    def test_detachment_input_unchanged_on_failure(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        snapshot = deepcopy(state)\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 99]]))\n        self.assertEqual(snapshot, state)\n        # nested identity preserved (untouched)\n        orig_stock = state['stock']\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e3', 'r1', [['B', 1]]))\n        self.assertIs(orig_stock, state['stock'])\n\n    def test_restock_aliasing_does_not_affect_input(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        state['stock']['A'] = 100\n        state['stock']['B'] = 1\n        state['seen']['tampered'] = {'id': 'x'}\n        next_state = apply_event(state, restock('e2', 'A', 1))\n        # new event processed normally; existing keys preserved\n        self.assertEqual({'A': 101, 'B': 1}, next_state['stock'])\n        # input state still holds the mutated values (it was mutated by caller)\n        self.assertEqual({'A': 100, 'B': 1}, state['stock'])\n\n    def test_replay_returns_detached_data(self):\n        state = empty_state()\n        state = apply_event(state, reserve('e1', 'r1', []))\n        replay = apply_event(state, reserve('e1', 'r1', []))\n        replay['stock']['X'] = 1\n        replay['requests']['r1']['K'] = 5\n        replay['seen']['e1']['id'] = 'z'\n        self.assertEqual({}, state['stock'])\n        self.assertEqual({'r1': {}}, state['requests'])\n        self.assertEqual('e1', state['seen']['e1']['id'])\n\n\nif __name__ == '__main__':\n    unittest.main()"
      }
    ],
    "is_error": false,
    "command": "str_replace",
    "path": "/workspace/test_reducer.py",
    "prev_exist": true,
    "old_content": null,
    "new_content": null,
    "kind": "FileEditorObservation"
  },
  "action_id": "bf0ac3ee-7329-42bd-b354-8de070c9b3e6",
  "extended_content": [],
  "kind": "ObservationEvent"
}

{
  "id": "6cd3e252-e6da-47e9-bcc0-70ab58398020",
  "timestamp": "2026-10-19T08:46:19.219831",
  "source": "agent",
  "parent_id": "9d65e6e7-3421-4519-98a6-278ab3f6c0c4",
  "responses_reasoning_item": null,
  "action": {
    "command": "cd /workspace && python3 -m unittest -v",
    "is_input": false,
    "timeout": null,
    "reset": false,
    "kind": "TerminalAction"
  },
  "tool_name": "terminal",
  "tool_call_id": "call_092ce5bf3d5a4b5f8023e251",
  "tool_call": {
    "id": "call_092ce5bf3d5a4b5f8023e251",
    "responses_item_id": null,
    "name": "terminal",
    "arguments": "{\"command\": \"cd /workspace && python3 -m unittest -v\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792417578-sjR37SBgV0YrJgnYzO6f",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "terminal: {\"command\": \"cd /workspace && python3 -m unittest -v\"}",
  "kind": "ActionEvent",
  "thought": []
}

{
  "id": "89b08ce6-e7ae-4894-968e-12baf20665ea",
  "timestamp": "2026-10-19T08:46:19.517193",
  "source": "environment",
  "parent_id": "6cd3e252-e6da-47e9-bcc0-70ab58398020",
  "tool_name": "terminal",
  "tool_call_id": "call_092ce5bf3d5a4b5f8023e251",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "test_canonical_dump_of_seen_restock (test_checkpoint.CheckpointConsistencyTest) ... ok\ntest_empty_request_allowed (test_checkpoint.CheckpointConsistencyTest) ... ok\ntest_loaded_state_verified_equal (test_checkpoint.CheckpointConsistencyTest) ... ok\ntest_space_skus_valid_and_preserved (test_checkpoint.CheckpointConsistencyTest) ... ok\ntest_unicode_preserved (test_checkpoint.CheckpointConsistencyTest) ... ok\ntest_dump_does_not_mutate_input (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_exact_dump_format (test_checkpoint.CheckpointDumpRoundTripTest) ... FAIL\ntest_insertion_order_byte_identical (test_checkpoint.CheckpointDumpRoundTripTest) ... FAIL\ntest_load_accepts_surrounding_whitespace (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_load_does_not_mutate_text (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_load_returns_detached_data (test_checkpoint.CheckpointDumpRoundTripTest) ... FAIL\ntest_round_trip_preserves_fields_and_replay (test_checkpoint.CheckpointDumpRoundTripTest) ... ok\ntest_dump_invalid_state_raises (test_checkpoint.CheckpointRejectTest) ... ok\ntest_duplicate_nested_key (test_checkpoint.CheckpointRejectTest) ... ok\ntest_duplicate_wrapper_key (test_checkpoint.CheckpointRejectTest) ... ok\ntest_extra_state_field (test_checkpoint.CheckpointRejectTest) ... ok\ntest_extra_wrapper_key (test_checkpoint.CheckpointRejectTest) ... ok\ntest_malformed_json (test_checkpoint.CheckpointRejectTest) ... ok\ntest_missing_state_field (test_checkpoint.CheckpointRejectTest) ... ok\ntest_missing_wrapper_key (test_checkpoint.CheckpointRejectTest) ... ok\ntest_request_empty_id (test_checkpoint.CheckpointRejectTest) ... ok\ntest_request_invalid_quantity_boolean (test_checkpoint.CheckpointRejectTest) ... ok\ntest_request_invalid_quantity_float (test_checkpoint.CheckpointRejectTest) ... ok\ntest_request_invalid_quantity_zero (test_checkpoint.CheckpointRejectTest) ... ok\ntest_request_lines_not_dict (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_extra_field (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_id_mismatch (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_missing_id (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_reordered_reserve (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_reserve_boolean_qty (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_restock_boolean_qty (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_restock_float_qty (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_unaggregated_reserve (test_checkpoint.CheckpointRejectTest) ... ok\ntest_seen_unknown_op (test_checkpoint.CheckpointRejectTest) ... ok\ntest_state_not_dict (test_checkpoint.CheckpointRejectTest) ... ok\ntest_stock_invalid_quantity_boolean (test_checkpoint.CheckpointRejectTest) ... ok\ntest_stock_invalid_quantity_float (test_checkpoint.CheckpointRejectTest) ... ok\ntest_stock_invalid_quantity_negative (test_checkpoint.CheckpointRejectTest) ... ok\ntest_stock_invalid_sku_boolean (test_checkpoint.CheckpointRejectTest) ... ok\ntest_stock_invalid_sku_empty (test_checkpoint.CheckpointRejectTest) ... ok\ntest_version_boolean (test_checkpoint.CheckpointRejectTest) ... ok\ntest_version_string (test_checkpoint.CheckpointRejectTest) ... ok\ntest_version_two (test_checkpoint.CheckpointRejectTest) ... ok\ntest_version_zero (test_checkpoint.CheckpointRejectTest) ... ok\ntest_cancel_canonical (test_codec.CanonicalizationTests) ... ok\ntest_reserve_aggregation_and_sort (test_codec.CanonicalizationTests) ... ok\ntest_reserve_empty_lines (test_codec.CanonicalizationTests) ... ok\ntest_reserve_lines_are_lists_not_tuples (test_codec.CanonicalizationTests) ... ok\ntest_reserve_sort_uses_python_string_ordering (test_codec.CanonicalizationTests) ... ok\ntest_restock_canonical (test_codec.CanonicalizationTests) ... ok\ntest_reserve_return_does_not_alias_input (test_codec.DetachmentTests) ... ok\ntest_returned_dict_is_fresh (test_codec.DetachmentTests) ... ok\ntest_duplicate_nested_object_keys_raise (test_codec.DuplicateKeyTests) ... ok\ntest_duplicate_top_level_keys_raise (test_codec.DuplicateKeyTests) ... ok\ntest_empty_ids_forbidden (test_codec.FieldShapeTests) ... ok\ntest_extra_fields_raise (test_codec.FieldShapeTests) ... ok\ntest_missing_fields_raise (test_codec.FieldShapeTests) ... ok\ntest_request_preserved (test_codec.IdentifierPreservationTests) ... ok\ntest_space_is_nonempty (test_codec.IdentifierPreservationTests) ... ok\ntest_whitespace_backslash_unicode_preserved (test_codec.IdentifierPreservationTests) ... ok\ntest_malformed_json_raises (test_codec.MalformedJsonTests) ... ok\ntest_non_string_input_raises (test_codec.MalformedJsonTests) ... ok\ntest_missing_op_raises (test_codec.NonObjectAndUnsupportedTests) ... ok\ntest_non_object_events_raise (test_codec.NonObjectAndUnsupportedTests) ... ok\ntest_unsupported_op_raises (test_codec.NonObjectAndUnsupportedTests) ... ok\ntest_boolean_quantity_rejected (test_codec.QuantityTests) ... ok\ntest_empty_request_forbidden (test_codec.QuantityTests) ... ok\ntest_empty_sku_forbidden (test_codec.QuantityTests) ... ok\ntest_float_quantity_rejected (test_codec.QuantityTests) ... ok\ntest_zero_and_negative_rejected (test_codec.QuantityTests) ... ok\ntest_imports (test_importer.Smoke) ... ok\ntest_cancel_restores_and_removes_and_reuse (test_reducer.ReducerTest) ... ok\ntest_cancel_unknown_request_raises (test_reducer.ReducerTest) ... ok\ntest_conflicting_event_raises_and_rejects_no_seen_entry (test_reducer.ReducerTest) ... ok\ntest_detachment_input_unchanged_on_failure (test_reducer.ReducerTest) ... ok\ntest_detachment_of_returned_reserve_storage_from_event (test_reducer.ReducerTest) ... ok\ntest_detachment_success_and_no_alias_into_event (test_reducer.ReducerTest) ... FAIL\ntest_empty_reserve_creates_active_empty_request (test_reducer.ReducerTest) ... ok\ntest_empty_state (test_reducer.ReducerTest) ... ok\ntest_replay_returns_detached_data (test_reducer.ReducerTest) ... ok\ntest_reserve_atomic_deduction (test_reducer.ReducerTest) ... ok\ntest_reserve_insufficient_stock_raises (test_reducer.ReducerTest) ... ok\ntest_reserve_requires_all_sku_present (test_reducer.ReducerTest) ... ok\ntest_reserve_requires_inactive_request (test_reducer.ReducerTest) ... ok\ntest_reserve_sufficient_stock_aggregate_deduces (test_reducer.ReducerTest) ... ok\ntest_reserve_unknown_stock_raises (test_reducer.ReducerTest) ... ok\ntest_restock_aliasing_does_not_affect_input (test_reducer.ReducerTest) ... ok\ntest_restock_introduces_and_adds (test_reducer.ReducerTest) ... ok\ntest_seen_check_before_business_preconditions (test_reducer.ReducerTest) ... ok\ntest_seen_conflicting_event_raises_even_after_cancel (test_reducer.ReducerTest) ... ok\ntest_seen_replay_equal_event_returns_no_change_detached (test_reducer.ReducerTest) ... ok\n\n======================================================================\nFAIL: test_exact_dump_format (test_checkpoint.CheckpointDumpRoundTripTest)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/workspace/test_checkpoint.py\", line 55, in test_exact_dump_format\n    self.assertEqual(text, expected)\nAssertionError: '{\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}},\"version\":1}\\n' != '{\"version\":1,\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}}}\\n'\n- {\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}},\"version\":1}\n?                                              ------------\n+ {\"version\":1,\"state\":{\"requests\":{},\"seen\":{},\"stock\":{}}}\n?  ++++++++++++\n\n\n======================================================================\nFAIL: test_insertion_order_byte_identical (test_checkpoint.CheckpointDumpRoundTripTest)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/workspace/test_checkpoint.py\", line 69, in test_insertion_order_byte_identical\n    self.assertEqual(dump_state(state1), dump_state(state2))\nAssertionError: '{\"st[13 chars]ts\":{\"r\":{\"a\":1}},\"seen\":{\"e\":{\"id\":\"e\",\"op\":\"[62 chars]1}\\n' != '{\"st[13 chars]ts\":{},\"seen\":{\"e\":{\"id\":\"e\",\"op\":\"restock\",\"q[51 chars]1}\\n'\n- {\"state\":{\"requests\":{\"r\":{\"a\":1}},\"seen\":{\"e\":{\"id\":\"e\",\"op\":\"restock\",\"qty\":1,\"sku\":\"a\"}},\"stock\":{\"a\":1,\"b\":2}},\"version\":1}\n?                       -----------\n+ {\"state\":{\"requests\":{},\"seen\":{\"e\":{\"id\":\"e\",\"op\":\"restock\",\"qty\":1,\"sku\":\"a\"}},\"stock\":{\"a\":1,\"b\":2}},\"version\":1}\n\n\n======================================================================\nFAIL: test_load_returns_detached_data (test_checkpoint.CheckpointDumpRoundTripTest)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/workspace/test_checkpoint.py\", line 82, in test_load_returns_detached_data\n    self.assertEqual(load_state(text)['stock']['A'], 7)  # 10-3 from e3\nAssertionError: 10 != 7\n\n======================================================================\nFAIL: test_detachment_success_and_no_alias_into_event (test_reducer.ReducerTest)\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/workspace/test_reducer.py\", line 188, in test_detachment_success_and_no_alias_into_event\n    self.assertEqual({}, state['seen'])\nAssertionError: {} != {'e1': {'id': 'e1', 'op': 'restock', 'sku': 'A', 'qty': 10}}\n- {}\n+ {'e1': {'id': 'e1', 'op': 'restock', 'qty': 10, 'sku': 'A'}}\n\n----------------------------------------------------------------------\nRan 91 tests in 0.004s\n\nFAILED (failures=4)\n"
      }
    ],
    "is_error": false,
    "command": "cd /workspace && python3 -m unittest -v",
    "exit_code": 1,
    "timeout": false,
    "metadata": {
      "exit_code": -1,
      "pid": -1,
      "username": null,
      "hostname": null,
      "working_dir": null,
      "py_interpreter_path": null,
      "prefix": "",
      "suffix": ""
    },
    "full_output_save_dir": null,
    "kind": "TerminalObservation"
  },
  "action_id": "6cd3e252-e6da-47e9-bcc0-70ab58398020",
  "extended_content": [],
  "kind": "ObservationEvent"
}

{
  "id": "492ba4d1-00f3-48be-b06d-2f2d5e49b1d2",
  "timestamp": "2026-10-19T08:46:28.548326",
  "source": "agent",
  "parent_id": "89b08ce6-e7ae-4894-968e-12baf20665ea",
  "responses_reasoning_item": null,
  "action": {
    "command": "str_replace",
    "path": "/workspace/test_reducer.py",
    "file_text": null,
    "old_str": "# input untouched\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertEqual({}, state['seen'])",
    "new_str": "# input untouched\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        # state['seen'] still only holds the original restock event\n        self.assertEqual(['e1'], list(state['seen']))\n        self.assertEqual({'id': 'e1', 'op': 'restock', 'sku': 'A', 'qty': 10},\n                         state['seen']['e1'])",
    "insert_line": null,
    "view_range": null,
    "kind": "FileEditorAction"
  },
  "tool_name": "file_editor",
  "tool_call_id": "call_cb9877d43af84764b134e7fd",
  "tool_call": {
    "id": "call_cb9877d43af84764b134e7fd",
    "responses_item_id": null,
    "name": "file_editor",
    "arguments": "{\"command\": \"str_replace\", \"path\": \"/workspace/test_reducer.py\", \"old_str\": \"# input untouched\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        self.assertEqual({}, state['seen'])\", \"new_str\": \"# input untouched\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        # state['seen'] still only holds the original restock event\\n        self.assertEqual(['e1'], list(state['seen']))\\n        self.assertEqual({'id': 'e1', 'op': 'restock', 'sku': 'A', 'qty': 10},\\n                         state['seen']['e1'])\"}",
    "origin": "completion"
  },
  "llm_response_id": "gen-1792417579-JP6e3rAOKypOLVba9HVu",
  "security_risk": "UNKNOWN",
  "critic_result": null,
  "summary": "file_editor: {\"command\": \"str_replace\", \"path\": \"/workspace/test_reducer.py\", \"old_str\": \"# input untouched\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        self.assertEqual({}, state['seen'])\", \"new_str\": \"# input untouched\\n        self.assertEqual({'A': 10}, state['stock'])\\n        self.assertNotIn('r1', state['requests'])\\n        # state['seen'] still only holds the original restock event\\n        self.assertEqual(['e1'], list(state['seen']))\\n        self.assertEqual({'id': 'e1', 'op': 'restock', 'sku': 'A', 'qty': 10},\\n                         state['seen']['e1'])\"}",
  "kind": "ActionEvent",
  "thought": []
}

{
  "id": "d0c1923b-2f9d-4516-b050-a94e5f6c2a35",
  "timestamp": "2026-10-19T08:46:28.744497",
  "source": "environment",
  "parent_id": "492ba4d1-00f3-48be-b06d-2f2d5e49b1d2",
  "tool_name": "file_editor",
  "tool_call_id": "call_cb9877d43af84764b134e7fd",
  "observation": {
    "content": [
      {
        "cache_prompt": false,
        "type": "text",
        "text": "Updated /workspace/test_reducer.py\nimport unittest\nfrom copy import deepcopy\n\nfrom reducer import empty_state, apply_event\n\n\ndef restock(eid, sku, qty):\n    return {'id': eid, 'op': 'restock', 'sku': sku, 'qty': qty}\n\n\ndef reserve(eid, request, lines):\n    # lines: list of [sku, qty] pairs, canonical form (aggregated/sorted)\n    return {'id': eid, 'op': 'reserve', 'request': request, 'lines': list(lines)}\n\n\ndef cancel(eid, request):\n    return {'id': eid, 'op': 'cancel', 'request': request}\n\n\nclass ReducerTest(unittest.TestCase):\n    def test_empty_state(self):\n        st = empty_state()\n        self.assertEqual({'stock': {}, 'requests': {}, 'seen': {}}, st)\n\n    def test_restock_introduces_and_adds(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        self.assertEqual({'A': 5}, state['stock'])\n        state = apply_event(state, restock('e2', 'A', 3))\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertIn('e1', state['seen'])\n        self.assertIn('e2', state['seen'])\n\n    def test_reserve_requires_inactive_request(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 2]]))\n        # request now active; re-reserving with same ID must fail\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e3', 'r1', [['A', 1]]))\n        # failure must not alter state\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertEqual({'A': 2}, state['requests']['r1'])\n\n    def test_reserve_requires_all_sku_present(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 1], ['B', 1]]))\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_reserve_atomic_deduction(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 2))\n        state = apply_event(state, restock('e2', 'B', 5))\n        with self.assertRaises(ValueError):\n            # aggregate demand exceeds stock for B\n            apply_event(state, reserve('e3', 'r1', [['A', 1], ['B', 6]]))\n        # no partial deduction\n        self.assertEqual({'A': 2, 'B': 5}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e3', state['seen'])\n\n    def test_reserve_sufficient_stock_aggregate_deduces(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, restock('e2', 'B', 10))\n        state = apply_event(state, reserve('e3', 'r1', [['A', 3], ['B', 4]]))\n        self.assertEqual({'A': 7, 'B': 6}, state['stock'])\n        self.assertEqual({'A': 3, 'B': 4}, state['requests']['r1'])\n\n    def test_empty_reserve_creates_active_empty_request(self):\n        state = empty_state()\n        state = apply_event(state, reserve('e1', 'r1', []))\n        self.assertEqual({'r1': {}}, state['requests'])\n        self.assertIn('e1', state['seen'])\n        # r1 is now active; cannot reserve same ID again\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', []))\n        # and cannot cancel an empty request's cancellation double? cancel restores nothing and removes\n        state = apply_event(state, cancel('e3', 'r1'))\n        self.assertNotIn('r1', state['requests'])\n\n    def test_cancel_restores_and_removes_and_reuse(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 4]]))\n        self.assertEqual({'A': 6}, state['stock'])\n        state = apply_event(state, cancel('e3', 'r1'))\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        # request ID reusable with a new event id\n        state = apply_event(state, reserve('e4', 'r1', [['A', 2]]))\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertEqual({'A': 2}, state['requests']['r1'])\n\n    def test_cancel_unknown_request_raises(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        with self.assertRaises(ValueError):\n            apply_event(state, cancel('e2', 'nope'))\n        self.assertEqual({'A': 5}, state['stock'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_seen_replay_equal_event_returns_no_change_detached(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        ev = restock('e1', 'A', 5)\n        state2 = apply_event(state, ev)\n        self.assertEqual(state, state2)\n        self.assertNotIn('e2', state2['seen'])\n        self.assertEqual({'A': 5}, state2['stock'])\n        # replay must be detached\n        state2['stock']['A'] = 999\n        self.assertEqual({'A': 5}, state['stock'])\n\n    def test_seen_check_before_business_preconditions(self):\n        # an event that would fail a business precondition must still replay\n        # if its ID was seen with an equal canonical event.\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        # cancel to free r1, but e2 id must remain in seen\n        state = apply_event(state, cancel('e3', 'r1'))\n        # replay of reserve e2 with same canonical event returns unchanged state\n        replay = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        self.assertEqual(state, replay)\n        self.assertNotIn('r1', replay['requests'])\n\n    def test_seen_conflicting_event_raises_even_after_cancel(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        state = apply_event(state, cancel('e3', 'r1'))\n        # reusing id e2 for a different event must raise even after cancellation\n        with self.assertRaises(ValueError):\n            apply_event(state, restock('e2', 'B', 5))\n        self.assertEqual(state, state)\n        self.assertNotIn('B', state['stock'])\n\n    def test_conflicting_event_raises_and_rejects_no_seen_entry(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        with self.assertRaises(ValueError):\n            apply_event(state, restock('e1', 'A', 7))  # same id, different event\n        self.assertNotIn('B', state['stock'])\n        self.assertEqual({'A': 5}, state['stock'])\n        # seen still holds original e1\n        self.assertEqual(restock('e1', 'A', 5), state['seen']['e1'])\n\n    def test_reserve_insufficient_stock_raises(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 2))\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        self.assertEqual({'A': 2}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_reserve_unknown_stock_raises(self):\n        state = empty_state()\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e1', 'r1', [['Z', 1]]))\n        self.assertEqual({}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e1', state['seen'])\n\n    def test_detachment_success_and_no_alias_into_event(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        ev = reserve('e2', 'r1', [['A', 3]])\n        state2 = apply_event(state, ev)\n        # input state unchanged\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        # returned state detached: mutate returned nested objects\n        state2['stock']['A'] = 1\n        state2['stock']['NEW'] = 1\n        state2['requests']['r1']['A'] = 999\n        state2['requests']['other'] = {}\n        state2['seen']['e2']['qty'] = 999\n        state2['seen']['new'] = {'x': 1}\n        # input untouched\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        # state['seen'] still only holds the original restock event\n        self.assertEqual(['e1'], list(state['seen']))\n        self.assertEqual({'id': 'e1', 'op': 'restock', 'sku': 'A', 'qty': 10},\n                         state['seen']['e1'])\n\n    def test_detachment_of_returned_reserve_storage_from_event(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        ev = reserve('e2', 'r1', [['A', 3]])\n        state2 = apply_event(state, ev)\n        # mutate the event after application; should not affect returned state\n        ev['lines'][0][1] = 999\n        ev['lines'][0][0] = 'CHANGED'\n        ev['id'] = 'mutated'\n        self.assertEqual({'A': 3}, state2['requests']['r1'])\n        self.assertEqual('e2', state2['seen']['e2']['id'])\n\n    def test_detachment_input_unchanged_on_failure(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        snapshot = deepcopy(state)\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 99]]))\n        self.assertEqual(snapshot, state)\n        # nested identity preserved (untouched)\n        orig_stock = state['stock']\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e3', 'r1', [['B', 1]]))\n        self.assertIs(orig_stock, state['stock'])\n\n    def test_restock_aliasing_does_not_affect_input(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        state['stock']['A'] = 100\n        state['stock']['B'] = 1\n        state['seen']['tampered'] = {'id': 'x'}\n        next_state = apply_event(state, restock('e2', 'A', 1))\n        # new event processed normally; existing keys preserved\n        self.assertEqual({'A': 101, 'B': 1}, next_state['stock'])\n        # input state still holds the mutated values (it was mutated by caller)\n        self.assertEqual({'A': 100, 'B': 1}, state['stock'])\n\n    def test_replay_returns_detached_data(self):\n        state = empty_state()\n        state = apply_event(state, reserve('e1', 'r1', []))\n        replay = apply_event(state, reserve('e1', 'r1', []))\n        replay['stock']['X'] = 1\n        replay['requests']['r1']['K'] = 5\n        replay['seen']['e1']['id'] = 'z'\n        self.assertEqual({}, state['stock'])\n        self.assertEqual({'r1': {}}, state['requests'])\n        self.assertEqual('e1', state['seen']['e1']['id'])\n\n\nif __name__ == '__main__':\n    unittest.main()"
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        "text": "test_cancel_restores_and_removes_and_reuse (test_reducer.ReducerTest) ... ok\ntest_cancel_unknown_request_raises (test_reducer.ReducerTest) ... ok\ntest_conflicting_event_raises_and_rejects_no_seen_entry (test_reducer.ReducerTest) ... ok\ntest_detachment_input_unchanged_on_failure (test_reducer.ReducerTest) ... ok\ntest_detachment_of_returned_reserve_storage_from_event (test_reducer.ReducerTest) ... ok\ntest_detachment_success_and_no_alias_into_event (test_reducer.ReducerTest) ... ok\ntest_empty_reserve_creates_active_empty_request (test_reducer.ReducerTest) ... ok\ntest_empty_state (test_reducer.ReducerTest) ... ok\ntest_replay_returns_detached_data (test_reducer.ReducerTest) ... ok\ntest_reserve_atomic_deduction (test_reducer.ReducerTest) ... ok\ntest_reserve_insufficient_stock_raises (test_reducer.ReducerTest) ... ok\ntest_reserve_requires_all_sku_present (test_reducer.ReducerTest) ... ok\ntest_reserve_requires_inactive_request (test_reducer.ReducerTest) ... ok\ntest_reserve_sufficient_stock_aggregate_deduces (test_reducer.ReducerTest) ... ok\ntest_reserve_unknown_stock_raises (test_reducer.ReducerTest) ... ok\ntest_restock_aliasing_does_not_affect_input (test_reducer.ReducerTest) ... ok\ntest_restock_introduces_and_adds (test_reducer.ReducerTest) ... ok\ntest_seen_check_before_business_preconditions (test_reducer.ReducerTest) ... ok\ntest_seen_conflicting_event_raises_even_after_cancel (test_reducer.ReducerTest) ... ok\ntest_seen_replay_equal_event_returns_no_change_detached (test_reducer.ReducerTest) ... ok\n\n----------------------------------------------------------------------\nRan 20 tests in 0.001s\n\nOK\n"
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        "text": "1\tfrom copy import deepcopy\n2\t\n3\t\n4\tdef empty_state():\n5\t    return {'stock': {}, 'requests': {}, 'seen': {}}\n6\t\n7\t\n8\tdef apply_event(state, event):\n9\t    result = deepcopy(state)\n10\t    stock, requests, seen = result['stock'], result['requests'], result['seen']\n11\t    event_id = event['id']\n12\t    if event_id in seen:\n13\t        if seen[event_id] != event:\n14\t            raise ValueError('conflicting event id')\n15\t        return result\n16\t    if event['op'] == 'restock':\n17\t        stock[event['sku']] = stock.get(event['sku'], 0) + event['qty']\n18\t    elif event['op'] == 'reserve':\n19\t        request = event['request']\n20\t        lines = dict(event['lines'])\n21\t        if request in requests or any(sku not in stock or stock[sku] < qty for sku, qty in lines.items()):\n22\t            raise ValueError('cannot reserve')\n23\t        for sku, qty in lines.items():\n24\t            stock[sku] -= qty\n25\t        requests[request] = lines\n26\t    else:\n27\t        request = event['request']\n28\t        if request not in requests:\n29\t            raise ValueError('inactive request')\n30\t        for sku, qty in requests[request].items():\n31\t            stock[sku] += qty\n32\t        del requests[request]\n33\t    seen[event_id] = deepcopy(event)\n34\t    return result"
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      }
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        "text": "Updated /workspace/test_reducer.py\nimport unittest\nfrom copy import deepcopy\n\nfrom reducer import empty_state, apply_event\n\n\ndef restock(eid, sku, qty):\n    return {'id': eid, 'op': 'restock', 'sku': sku, 'qty': qty}\n\n\ndef reserve(eid, request, lines):\n    # lines: list of [sku, qty] pairs, canonical form (aggregated/sorted)\n    return {'id': eid, 'op': 'reserve', 'request': request, 'lines': list(lines)}\n\n\ndef cancel(eid, request):\n    return {'id': eid, 'op': 'cancel', 'request': request}\n\n\nclass ReducerTest(unittest.TestCase):\n    def test_empty_state(self):\n        st = empty_state()\n        self.assertEqual({'stock': {}, 'requests': {}, 'seen': {}}, st)\n\n    def test_restock_introduces_and_adds(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        self.assertEqual({'A': 5}, state['stock'])\n        state = apply_event(state, restock('e2', 'A', 3))\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertIn('e1', state['seen'])\n        self.assertIn('e2', state['seen'])\n\n    def test_reserve_requires_inactive_request(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 2]]))\n        # request now active; re-reserving with same ID must fail\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e3', 'r1', [['A', 1]]))\n        # failure must not alter state\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertEqual({'A': 2}, state['requests']['r1'])\n\n    def test_reserve_requires_all_sku_present(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 1], ['B', 1]]))\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_reserve_atomic_deduction(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 2))\n        state = apply_event(state, restock('e2', 'B', 5))\n        with self.assertRaises(ValueError):\n            # aggregate demand exceeds stock for B\n            apply_event(state, reserve('e3', 'r1', [['A', 1], ['B', 6]]))\n        # no partial deduction\n        self.assertEqual({'A': 2, 'B': 5}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e3', state['seen'])\n\n    def test_reserve_sufficient_stock_aggregate_deduces(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, restock('e2', 'B', 10))\n        state = apply_event(state, reserve('e3', 'r1', [['A', 3], ['B', 4]]))\n        self.assertEqual({'A': 7, 'B': 6}, state['stock'])\n        self.assertEqual({'A': 3, 'B': 4}, state['requests']['r1'])\n\n    def test_empty_reserve_creates_active_empty_request(self):\n        state = empty_state()\n        state = apply_event(state, reserve('e1', 'r1', []))\n        self.assertEqual({'r1': {}}, state['requests'])\n        self.assertIn('e1', state['seen'])\n        # r1 is now active; cannot reserve same ID again\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', []))\n        # and cannot cancel an empty request's cancellation double? cancel restores nothing and removes\n        state = apply_event(state, cancel('e3', 'r1'))\n        self.assertNotIn('r1', state['requests'])\n\n    def test_cancel_restores_and_removes_and_reuse(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 4]]))\n        self.assertEqual({'A': 6}, state['stock'])\n        state = apply_event(state, cancel('e3', 'r1'))\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        # request ID reusable with a new event id\n        state = apply_event(state, reserve('e4', 'r1', [['A', 2]]))\n        self.assertEqual({'A': 8}, state['stock'])\n        self.assertEqual({'A': 2}, state['requests']['r1'])\n\n    def test_cancel_unknown_request_raises(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        with self.assertRaises(ValueError):\n            apply_event(state, cancel('e2', 'nope'))\n        self.assertEqual({'A': 5}, state['stock'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_seen_replay_equal_event_returns_no_change_detached(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        ev = restock('e1', 'A', 5)\n        state2 = apply_event(state, ev)\n        self.assertEqual(state, state2)\n        self.assertNotIn('e2', state2['seen'])\n        self.assertEqual({'A': 5}, state2['stock'])\n        # replay must be detached\n        state2['stock']['A'] = 999\n        self.assertEqual({'A': 5}, state['stock'])\n\n    def test_seen_check_before_business_preconditions(self):\n        # an event that would fail a business precondition must still replay\n        # if its ID was seen with an equal canonical event.\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        # cancel to free r1, but e2 id must remain in seen\n        state = apply_event(state, cancel('e3', 'r1'))\n        # replay of reserve e2 with same canonical event returns unchanged state\n        replay = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        self.assertEqual(state, replay)\n        self.assertNotIn('r1', replay['requests'])\n\n    def test_seen_conflicting_event_raises_even_after_cancel(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        state = apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        state = apply_event(state, cancel('e3', 'r1'))\n        # reusing id e2 for a different event must raise even after cancellation\n        with self.assertRaises(ValueError):\n            apply_event(state, restock('e2', 'B', 5))\n        self.assertNotIn('B', state['stock'])\n        self.assertNotIn('r1', state['requests'])\n\n    def test_conflicting_event_raises_and_rejects_no_seen_entry(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        with self.assertRaises(ValueError):\n            apply_event(state, restock('e1', 'A', 7))  # same id, different event\n        self.assertNotIn('B', state['stock'])\n        self.assertEqual({'A': 5}, state['stock'])\n        # seen still holds original e1\n        self.assertEqual(restock('e1', 'A', 5), state['seen']['e1'])\n\n    def test_reserve_insufficient_stock_raises(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 2))\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 3]]))\n        self.assertEqual({'A': 2}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e2', state['seen'])\n\n    def test_reserve_unknown_stock_raises(self):\n        state = empty_state()\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e1', 'r1', [['Z', 1]]))\n        self.assertEqual({}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        self.assertNotIn('e1', state['seen'])\n\n    def test_detachment_success_and_no_alias_into_event(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        ev = reserve('e2', 'r1', [['A', 3]])\n        state2 = apply_event(state, ev)\n        # input state unchanged\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        # returned state detached: mutate returned nested objects\n        state2['stock']['A'] = 1\n        state2['stock']['NEW'] = 1\n        state2['requests']['r1']['A'] = 999\n        state2['requests']['other'] = {}\n        state2['seen']['e2']['qty'] = 999\n        state2['seen']['new'] = {'x': 1}\n        # input untouched\n        self.assertEqual({'A': 10}, state['stock'])\n        self.assertNotIn('r1', state['requests'])\n        # state['seen'] still only holds the original restock event\n        self.assertEqual(['e1'], list(state['seen']))\n        self.assertEqual({'id': 'e1', 'op': 'restock', 'sku': 'A', 'qty': 10},\n                         state['seen']['e1'])\n\n    def test_detachment_of_returned_reserve_storage_from_event(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 10))\n        ev = reserve('e2', 'r1', [['A', 3]])\n        state2 = apply_event(state, ev)\n        # mutate the event after application; should not affect returned state\n        ev['lines'][0][1] = 999\n        ev['lines'][0][0] = 'CHANGED'\n        ev['id'] = 'mutated'\n        self.assertEqual({'A': 3}, state2['requests']['r1'])\n        self.assertEqual('e2', state2['seen']['e2']['id'])\n\n    def test_detachment_input_unchanged_on_failure(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        snapshot = deepcopy(state)\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e2', 'r1', [['A', 99]]))\n        self.assertEqual(snapshot, state)\n        # nested identity preserved (untouched)\n        orig_stock = state['stock']\n        with self.assertRaises(ValueError):\n            apply_event(state, reserve('e3', 'r1', [['B', 1]]))\n        self.assertIs(orig_stock, state['stock'])\n\n    def test_restock_aliasing_does_not_affect_input(self):\n        state = empty_state()\n        state = apply_event(state, restock('e1', 'A', 5))\n        state['stock']['A'] = 100\n        state['stock']['B'] = 1\n        state['seen']['tampered'] = {'id': 'x'}\n        next_state = apply_event(state, restock('e2', 'A', 1))\n        # new event processed normally; existing keys preserved\n        self.assertEqual({'A': 101, 'B': 1}, next_state['stock'])\n        # input state still holds the mutated values (it was mutated by caller)\n        self.assertEqual({'A': 100, 'B': 1}, state['stock'])\n\n    def test_replay_returns_detached_data(self):\n        state = empty_state()\n        state = apply_event(state, reserve('e1', 'r1', []))\n        replay = apply_event(state, reserve('e1', 'r1', []))\n        replay['stock']['X'] = 1\n        replay['requests']['r1']['K'] = 5\n        replay['seen']['e1']['id'] = 'z'\n        self.assertEqual({}, state['stock'])\n        self.assertEqual({'r1': {}}, state['requests'])\n        self.assertEqual('e1', state['seen']['e1']['id'])\n\n\nif __name__ == '__main__':\n    unittest.main()"
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        "text": "test_cancel_restores_and_removes_and_reuse (test_reducer.ReducerTest) ... ok\ntest_cancel_unknown_request_raises (test_reducer.ReducerTest) ... ok\ntest_conflicting_event_raises_and_rejects_no_seen_entry (test_reducer.ReducerTest) ... ok\ntest_detachment_input_unchanged_on_failure (test_reducer.ReducerTest) ... ok\ntest_detachment_of_returned_reserve_storage_from_event (test_reducer.ReducerTest) ... ok\ntest_detachment_success_and_no_alias_into_event (test_reducer.ReducerTest) ... ok\ntest_empty_reserve_creates_active_empty_request (test_reducer.ReducerTest) ... ok\ntest_empty_state (test_reducer.ReducerTest) ... ok\ntest_replay_returns_detached_data (test_reducer.ReducerTest) ... ok\ntest_reserve_atomic_deduction (test_reducer.ReducerTest) ... ok\ntest_reserve_insufficient_stock_raises (test_reducer.ReducerTest) ... ok\ntest_reserve_requires_all_sku_present (test_reducer.ReducerTest) ... ok\ntest_reserve_requires_inactive_request (test_reducer.ReducerTest) ... ok\ntest_reserve_sufficient_stock_aggregate_deduces (test_reducer.ReducerTest) ... ok\ntest_reserve_unknown_stock_raises (test_reducer.ReducerTest) ... ok\ntest_restock_aliasing_does_not_affect_input (test_reducer.ReducerTest) ... ok\ntest_restock_introduces_and_adds (test_reducer.ReducerTest) ... ok\ntest_seen_check_before_business_preconditions (test_reducer.ReducerTest) ... ok\ntest_seen_conflicting_event_raises_even_after_cancel (test_reducer.ReducerTest) ... ok\ntest_seen_replay_equal_event_returns_no_change_detached (test_reducer.ReducerTest) ... ok\n\n----------------------------------------------------------------------\nRan 20 tests in 0.001s\n\nOK\n"
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    "retryable": false,
    "user_action": "none",
    "error_id": null
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