All lecture examples
Workshop 6 · 6B.1 · Codec worker
The team lead reached a capped stop. Its archive state is normalized for inert viewing and does not mean the team workflow finished. All three worker histories are included.
24 complete recorded events. This is a transcript, not a Canvas screenshot. Commands are historical evidence.
1. SystemPromptEvent agent
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"timestamp": "2026-10-19T08:44:19.185546",
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"system_prompt": {
"cache_prompt": false,
"type": "text",
"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 codec.py and test_codec.py. Own strict JSON shape/type validation, duplicate keys, identifiers, quantity checks and canonical duplicate-SKU aggregation. Read the full README; preserve the public parse_event interface. Do not edit any other files. Do not delegate. Report changes, exact tests and unresolved interface issues."
},
"tools": [
{
"description": "Run only ls/cat/wc/pwd or python3 -c probes / python3 -m unittest. The /workspace alias works, including cd /workspace && python3 -m unittest -v. No other shell syntax. Python imports/capabilities are restricted to synthetic computation. Use file_editor for writes.",
"action_type": "TerminalAction",
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"title": "terminal"
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"description": "View synthetic workspace or README.md; Edit only the product/test files approved in README.md; role ownership is enforced. /workspace alias works. Reviewers are strictly read-only.",
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"description": "Signals the completion of the current task or conversation.\n\nUse this tool when:\n- You have successfully completed the user's requested task\n- You cannot proceed further due to technical limitations or missing information\n\nThe message should include:\n- A clear summary of actions taken and their results\n- Any next steps for the user\n- Explanation if you're unable to complete the task\n- Any follow-up questions if more information is needed\n",
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"title": "finish"
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"description": "Use the tool to think about something. It will not obtain new information or make any changes to the repository, but just log the thought. Use it when complex reasoning or brainstorming is needed.\n\nCommon use cases:\n1. When exploring a repository and discovering the source of a bug, call this tool to brainstorm several unique ways of fixing the bug, and assess which change(s) are likely to be simplest and most effective.\n2. After receiving test results, use this tool to brainstorm ways to fix failing tests.\n3. When planning a complex refactoring, use this tool to outline different approaches and their tradeoffs.\n4. When designing a new feature, use this tool to think through architecture decisions and implementation details.\n5. When debugging a complex issue, use this tool to organize your thoughts and hypotheses.\n\nThe tool simply logs your thought process for better transparency and does not execute any code or make changes.",
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}2. MessageEvent user
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"timestamp": "2026-10-19T08:44:19.191448",
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{
"cache_prompt": false,
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"text": "You are the codec-worker in a synthetic durable reservation importer exercise. You own EXACTLY two files: /workspace/codec.py and /workspace/test_codec.py. Do not edit any other files. You may add regression tests in test_codec.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\nEvents and canonicalization:\n- Accept precisely these object shapes, rejecting extra or missing fields with ValueError:\n - {\"id\": ID, \"op\": \"restock\", \"sku\": SKU, \"qty\": Q} where Q is a positive integer.\n - {\"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.\n - {\"id\": ID, \"op\": \"cancel\", \"request\": REQUEST}.\n- IDs, 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.\n- Booleans 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.\n- parse_event must return a detached/canonical dictionary; it must not alias or mutate the input string (it returns a fresh dict).\n\nRegression tests needed (add to test_codec.py using unittest):\n- malformed JSON and non-string input raise ValueError\n- duplicate JSON object keys at any depth raise ValueError\n- non-object events and unsupported ops raise ValueError\n- extra/missing fields raise ValueError\n- restock/reserve/cancel canonicalization\n- reserve duplicate SKU aggregation across lines and Python string sort ordering, arrays not tuples, empty lines\n- preserve whitespace/backslash/Unicode in identifiers, no stripping/normalization\n- boolean quantity rejected; float rejected; zero/negative rejected; nonempty checks (a lone space is valid nonempty string)\n\nThe starter codec.py may have seeded defects. Inspect it, fix all defects so it satisfies the contract above, and add comprehensive regression tests to test_codec.py. Ensure parse_event returns detached data and never raises anything but ValueError on invalid input. Do not modify public interface names.\n\nRun your tests only on codec (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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}3. ActionEvent file_editor
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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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}6. ObservationEvent file_editor
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"text": "total 56\ndrwxr-xr-x@ 9 501 20 288 Oct 19 08:43 .\ndrwxr-xr-x@ 4 501 20 128 Oct 19 08:43 ..\ndrwxr-xr-x@ 2 501 20 64 Oct 19 08:43 .scratch\n-rw-r--r--@ 1 501 20 6572 Oct 19 06:54 README.md\n-rw-r--r--@ 1 501 20 1817 Oct 18 22:02 checkpoint.py\n-rw-r--r--@ 1 501 20 1875 Oct 18 22:02 codec.py\n-rw-r--r--@ 1 501 20 382 Oct 18 21:54 pipeline.py\n-rw-r--r--@ 1 501 20 1144 Oct 18 22:02 reducer.py\n-rw-r--r--@ 1 501 20 129 Oct 18 21:54 test_importer.py\n"
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"file_text": "import json\n\n\ndef unique_object(pairs):\n result = {}\n for key, value in pairs:\n if key in result:\n raise ValueError('duplicate key')\n result[key] = value\n return result\n\n\ndef read_json(text):\n if not isinstance(text, str):\n raise ValueError('text required')\n try:\n return json.loads(text, object_pairs_hook=unique_object)\n except (TypeError, json.JSONDecodeError) as exc:\n raise ValueError('invalid JSON') from exc\n\n\ndef string(value):\n return isinstance(value, str) and bool(value)\n\n\ndef integer(value, minimum):\n return (isinstance(value, int)\n and not isinstance(value, bool)\n and value >= minimum)\n\n\ndef parse_event(line):\n event = read_json(line)\n if not isinstance(event, dict) or not string(event.get('id')):\n raise ValueError('event object and id required')\n op = event.get('op')\n fields = {'restock': {'id', 'op', 'sku', 'qty'},\n 'reserve': {'id', 'op', 'request', 'lines'},\n 'cancel': {'id', 'op', 'request'}}\n if not isinstance(op, str) or op not in fields or set(event) != fields[op]:\n raise ValueError('operation or fields')\n if op == 'restock':\n if not string(event['sku']) or not integer(event['qty'], 1):\n raise ValueError('restock fields')\n elif not string(event['request']):\n raise ValueError('request')\n if op == 'reserve':\n if not isinstance(event['lines'], list):\n raise ValueError('lines')\n quantities = {}\n for pair in event['lines']:\n if not isinstance(pair, list) or len(pair) != 2:\n raise ValueError('pair')\n sku, qty = pair\n if not string(sku) or not integer(qty, 1):\n raise ValueError('quantity')\n quantities[sku] = quantities.get(sku, 0) + qty\n event['lines'] = [[sku, qty] for sku, qty in sorted(quantities.items())]\n return event",
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"text": "Updated /workspace/codec.py\nimport json\n\n\ndef unique_object(pairs):\n result = {}\n for key, value in pairs:\n if key in result:\n raise ValueError('duplicate key')\n result[key] = value\n return result\n\n\ndef read_json(text):\n if not isinstance(text, str):\n raise ValueError('text required')\n try:\n return json.loads(text, object_pairs_hook=unique_object)\n except (TypeError, json.JSONDecodeError) as exc:\n raise ValueError('invalid JSON') from exc\n\n\ndef string(value):\n return isinstance(value, str) and bool(value)\n\n\ndef integer(value, minimum):\n return (isinstance(value, int)\n and not isinstance(value, bool)\n and value >= minimum)\n\n\ndef parse_event(line):\n event = read_json(line)\n if not isinstance(event, dict) or not string(event.get('id')):\n raise ValueError('event object and id required')\n op = event.get('op')\n fields = {'restock': {'id', 'op', 'sku', 'qty'},\n 'reserve': {'id', 'op', 'request', 'lines'},\n 'cancel': {'id', 'op', 'request'}}\n if not isinstance(op, str) or op not in fields or set(event) != fields[op]:\n raise ValueError('operation or fields')\n if op == 'restock':\n if not string(event['sku']) or not integer(event['qty'], 1):\n raise ValueError('restock fields')\n elif not string(event['request']):\n raise ValueError('request')\n if op == 'reserve':\n if not isinstance(event['lines'], list):\n raise ValueError('lines')\n quantities = {}\n for pair in event['lines']:\n if not isinstance(pair, list) or len(pair) != 2:\n raise ValueError('pair')\n sku, qty = pair\n if not string(sku) or not integer(qty, 1):\n raise ValueError('quantity')\n quantities[sku] = quantities.get(sku, 0) + qty\n event['lines'] = [[sku, qty] for sku, qty in sorted(quantities.items())]\n return event"
}
],
"is_error": false,
"command": "create",
"path": "/workspace/codec.py",
"prev_exist": true,
"old_content": null,
"new_content": null,
"kind": "FileEditorObservation"
},
"action_id": "83f4b1e3-c8f3-4f33-a9c4-a8b02874d51a",
"extended_content": [],
"kind": "ObservationEvent"
}13. ActionEvent file_editor
{
"id": "70d5bc22-bb8c-449a-b334-04d73ef55d4f",
"timestamp": "2026-10-19T08:45:09.083225",
"source": "agent",
"parent_id": "76bf4505-0559-4f2d-81a2-7cbbcbf39c4d",
"responses_reasoning_item": null,
"action": {
"command": "create",
"path": "/workspace/test_codec.py",
"file_text": "import unittest\n\nfrom codec import parse_event\n\n\ndef raises(func, *args):\n with unittest.TestCase().assertRaises(ValueError):\n func(*args)\n\n\nclass MalformedJsonTests(unittest.TestCase):\n def test_malformed_json_raises(self):\n for bad in ['', '{', '{\"id\":', '[1,2', '{\"id\": \"x\", }', 'not json',\n '{\"id\": \"x\"', '{\"id\": \"x\", \"op\": \"restock\"} junk']:\n with self.assertRaises(ValueError):\n parse_event(bad)\n\n def test_non_string_input_raises(self):\n for bad in [None, 5, 3.14, ['a'], {'a': 1}, b'{\"id\": \"x\"}']:\n with self.assertRaises(ValueError):\n parse_event(bad)\n\n\nclass DuplicateKeyTests(unittest.TestCase):\n def test_duplicate_top_level_keys_raise(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"id\": \"b\", \"op\": \"cancel\", \"request\": \"r\"}')\n\n def test_duplicate_nested_object_keys_raise(self):\n # Nested object duplicate key inside a field value.\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [{\"x\": 1, \"x\": 2}]}')\n\n\nclass NonObjectAndUnsupportedTests(unittest.TestCase):\n def test_non_object_events_raise(self):\n for bad in ['[]', '\"str\"', '5', 'null', 'true']:\n with self.assertRaises(ValueError):\n parse_event(bad)\n\n def test_unsupported_op_raises(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"ship\", \"sku\": \"S\", \"qty\": 1}')\n\n def test_missing_op_raises(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"request\": \"r\"}')\n\n\nclass FieldShapeTests(unittest.TestCase):\n def test_missing_fields_raise(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\"}')\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"restock\", \"qty\": 1}')\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"cancel\"}')\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\"}')\n with self.assertRaises(ValueError):\n parse_event('{\"op\": \"restock\", \"sku\": \"S\", \"qty\": 1}')\n\n def test_extra_fields_raise(self):\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1, \"x\": 1}')\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"cancel\", \"request\": \"r\", \"sku\": \"S\"}')\n\n def test_empty_ids_forbidden(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1}')\n\n\nclass CanonicalizationTests(unittest.TestCase):\n def test_restock_canonical(self):\n line = ' {\"id\": \"A1\", \"op\": \"restock\", \"sku\": \"SKU-1\", \"qty\": 7} '\n ev = parse_event(line)\n self.assertEqual(ev, {\n 'id': 'A1', 'op': 'restock', 'sku': 'SKU-1', 'qty': 7})\n\n def test_cancel_canonical(self):\n ev = parse_event('{\"id\": \"C1\", \"op\": \"cancel\", \"request\": \"REQ\"}')\n self.assertEqual(ev, {\n 'id': 'C1', 'op': 'cancel', 'request': 'REQ'})\n\n def test_reserve_empty_lines(self):\n ev = parse_event(\n '{\"id\": \"R1\", \"op\": \"reserve\", \"request\": \"REQ\", \"lines\": []}')\n self.assertEqual(ev['lines'], [])\n self.assertIsInstance(ev['lines'], list)\n\n def test_reserve_aggregation_and_sort(self):\n line = (\n '{\"id\": \"R1\", \"op\": \"reserve\", \"request\": \"REQ\", \"lines\": '\n '[[\"z\", 1], [\"a\", 5], [\"m\", 2], [\"a\", 3], [\"z\", 2]]}')\n ev = parse_event(line)\n self.assertEqual(ev['lines'], [['a', 8], ['m', 2], ['z', 3]])\n\n def test_reserve_lines_are_lists_not_tuples(self):\n ev = parse_event(\n '{\"id\": \"R1\", \"op\": \"reserve\", \"request\": \"REQ\", '\n '\"lines\": [[\"b\", 2], [\"a\", 1]]}')\n for pair in ev['lines']:\n self.assertIsInstance(pair, list)\n self.assertEqual(ev['lines'], [['a', 1], ['b', 2]])\n\n def test_reserve_sort_uses_python_string_ordering(self):\n ev = parse_event(\n '{\"id\": \"R1\", \"op\": \"reserve\", \"request\": \"REQ\", '\n '\"lines\": [[\"b\", 1], [\"A\", 1], [\"a\", 1], [\"10\", 1]]}')\n self.assertEqual(ev['lines'], [['10', 1], ['A', 1], ['a', 1], ['b', 1]])\n\n\nclass IdentifierPreservationTests(unittest.TestCase):\n def test_whitespace_backslash_unicode_preserved(self):\n ids = [' hello ', 'with\\\\pipe|chars', 'caf\\u00e9 \\u4e2d\\u6587',\n '\\t', 'a b']\n for ident in ids:\n line = ('{\"id\": %r, \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1}'\n % ident)\n ev = parse_event(line)\n self.assertEqual(ev['id'], ident)\n\n def test_space_is_nonempty(self):\n ev = parse_event('{\"id\": \"a\", \"op\": \"restock\", \"sku\": \" \", \"qty\": 1}')\n self.assertEqual(ev['sku'], ' ')\n\n def test_request_preserved(self):\n req = 'a|b\\\\c \\u00e9'\n line = ('{\"id\": \"a\", \"op\": \"cancel\", \"request\": %r}' % req)\n ev = parse_event(line)\n self.assertEqual(ev['request'], req)\n\n\nclass QuantityTests(unittest.TestCase):\n def test_boolean_quantity_rejected(self):\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": true}')\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [[\"S\", true]]}')\n\n def test_float_quantity_rejected(self):\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1.5}')\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [[\"S\", 2.0]]}')\n\n def test_zero_and_negative_rejected(self):\n for q in [0, -1, -5]:\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": %d}'\n % q)\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [[\"S\", %d]]}' % q)\n\n def test_empty_request_forbidden(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"cancel\", \"request\": \"\"}')\n\n def test_empty_sku_forbidden(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"\", \"qty\": 1}')\n\n\nclass DetachmentTests(unittest.TestCase):\n def test_returned_dict_is_fresh(self):\n line = '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1}'\n ev = parse_event(line)\n mutated = dict(ev)\n mutated['id'] = 'changed'\n mutated['extra'] = 1\n # Original dict is unchanged.\n self.assertEqual(ev['id'], 'a')\n self.assertNotIn('extra', ev)\n\n def test_reserve_return_does_not_alias_input(self):\n line = (\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [[\"a\", 1], [\"a\", 2]]}')\n ev = parse_event(line)\n self.assertEqual(ev['lines'], [['a', 3]])\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_37f6baa6c6744d2ebc073f5f",
"tool_call": {
"id": "call_37f6baa6c6744d2ebc073f5f",
"responses_item_id": null,
"name": "file_editor",
"arguments": "{\"command\": \"create\", \"path\": \"/workspace/test_codec.py\", \"file_text\": \"import unittest\\n\\nfrom codec import parse_event\\n\\n\\ndef raises(func, *args):\\n with unittest.TestCase().assertRaises(ValueError):\\n func(*args)\\n\\n\\nclass MalformedJsonTests(unittest.TestCase):\\n def test_malformed_json_raises(self):\\n for bad in ['', '{', '{\\\"id\\\":', '[1,2', '{\\\"id\\\": \\\"x\\\", }', 'not json',\\n '{\\\"id\\\": \\\"x\\\"', '{\\\"id\\\": \\\"x\\\", \\\"op\\\": \\\"restock\\\"} junk']:\\n with self.assertRaises(ValueError):\\n parse_event(bad)\\n\\n def test_non_string_input_raises(self):\\n for bad in [None, 5, 3.14, ['a'], {'a': 1}, b'{\\\"id\\\": \\\"x\\\"}']:\\n with self.assertRaises(ValueError):\\n parse_event(bad)\\n\\n\\nclass DuplicateKeyTests(unittest.TestCase):\\n def test_duplicate_top_level_keys_raise(self):\\n with self.assertRaises(ValueError):\\n parse_event('{\\\"id\\\": \\\"a\\\", \\\"id\\\": \\\"b\\\", \\\"op\\\": \\\"cancel\\\", \\\"request\\\": \\\"r\\\"}')\\n\\n def test_duplicate_nested_object_keys_raise(self):\\n # Nested object duplicate key inside a field value.\\n with self.assertRaises(ValueError):\\n parse_event(\\n '{\\\"id\\\": \\\"a\\\", \\\"op\\\": \\\"reserve\\\", \\\"request\\\": \\\"r\\\", '\\n '\\\"lines\\\": [{\\\"x\\\": 1, \\\"x\\\": 2}]}')\\n\\n\\nclass NonObjectAndUnsupportedTests(unittest.TestCase):\\n def test_non_object_events_raise(self):\\n for bad in ['[]', '\\\"str\\\"', '5', 'null', 'true']:\\n with self.assertRaises(ValueError):\\n parse_event(bad)\\n\\n def test_unsupported_op_raises(self):\\n with self.assertRaises(ValueError):\\n parse_event('{\\\"id\\\": \\\"a\\\", \\\"op\\\": \\\"ship\\\", \\\"sku\\\": \\\"S\\\", \\\"qty\\\": 1}')\\n\\n def test_missing_op_raises(self):\\n with self.assertRaises(ValueError):\\n parse_event('{\\\"id\\\": \\\"a\\\", \\\"request\\\": \\\"r\\\"}')\\n\\n\\nclass FieldShapeTests(unittest.TestCase):\\n def test_missing_fields_raise(self):\\n with self.assertRaises(ValueError):\\n parse_event('{\\\"id\\\": \\\"a\\\", \\\"op\\\": \\\"restock\\\", \\\"sku\\\": \\\"S\\\"}')\\n with self.assertRaises(ValueError):\\n parse_event('{\\\"id\\\": \\\"a\\\", \\\"op\\\": \\\"restock\\\", \\\"qty\\\": 1}')\\n with self.assertRaises(ValueError):\\n parse_event('{\\\"id\\\": \\\"a\\\", \\\"op\\\": \\\"cancel\\\"}')\\n with self.assertRaises(ValueError):\\n parse_event('{\\\"id\\\": \\\"a\\\", \\\"op\\\": \\\"reserve\\\", \\\"request\\\": \\\"r\\\"}')\\n with self.assertRaises(ValueError):\\n parse_event('{\\\"op\\\": \\\"restock\\\", \\\"sku\\\": \\\"S\\\", \\\"qty\\\": 1}')\\n\\n def test_extra_fields_raise(self):\\n with self.assertRaises(ValueError):\\n parse_event(\\n '{\\\"id\\\": \\\"a\\\", \\\"op\\\": \\\"restock\\\", \\\"sku\\\": \\\"S\\\", \\\"qty\\\": 1, \\\"x\\\": 1}')\\n with self.assertRaises(ValueError):\\n parse_event(\\n '{\\\"id\\\": \\\"a\\\", \\\"op\\\": \\\"cancel\\\", \\\"request\\\": \\\"r\\\", \\\"sku\\\": \\\"S\\\"}')\\n\\n def test_empty_ids_forbidden(self):\\n with self.assertRaises(ValueError):\\n parse_event('{\\\"id\\\": \\\"\\\", \\\"op\\\": \\\"restock\\\", \\\"sku\\\": \\\"S\\\", \\\"qty\\\": 1}')\\n\\n\\nclass CanonicalizationTests(unittest.TestCase):\\n def test_restock_canonical(self):\\n line = ' {\\\"id\\\": \\\"A1\\\", \\\"op\\\": \\\"restock\\\", \\\"sku\\\": \\\"SKU-1\\\", \\\"qty\\\": 7} '\\n ev = parse_event(line)\\n self.assertEqual(ev, {\\n 'id': 'A1', 'op': 'restock', 'sku': 'SKU-1', 'qty': 7})\\n\\n def test_cancel_canonical(self):\\n ev = parse_event('{\\\"id\\\": \\\"C1\\\", \\\"op\\\": \\\"cancel\\\", \\\"request\\\": \\\"REQ\\\"}')\\n self.assertEqual(ev, {\\n 'id': 'C1', 'op': 'cancel', 'request': 'REQ'})\\n\\n def test_reserve_empty_lines(self):\\n ev = parse_event(\\n '{\\\"id\\\": \\\"R1\\\", \\\"op\\\": \\\"reserve\\\", \\\"request\\\": \\\"REQ\\\", \\\"lines\\\": []}')\\n self.assertEqual(ev['lines'], [])\\n self.assertIsInstance(ev['lines'], list)\\n\\n def test_reserve_aggregation_and_sort(self):\\n line = (\\n '{\\\"id\\\": \\\"R1\\\", \\\"op\\\": \\\"reserve\\\", \\\"request\\\": \\\"REQ\\\", \\\"lines\\\": '\\n '[[\\\"z\\\", 1], [\\\"a\\\", 5], [\\\"m\\\", 2], [\\\"a\\\", 3], [\\\"z\\\", 2]]}')\\n ev = parse_event(line)\\n self.assertEqual(ev['lines'], [['a', 8], ['m', 2], ['z', 3]])\\n\\n def test_reserve_lines_are_lists_not_tuples(self):\\n ev = parse_event(\\n '{\\\"id\\\": \\\"R1\\\", \\\"op\\\": \\\"reserve\\\", \\\"request\\\": \\\"REQ\\\", '\\n '\\\"lines\\\": [[\\\"b\\\", 2], [\\\"a\\\", 1]]}')\\n for pair in ev['lines']:\\n self.assertIsInstance(pair, list)\\n self.assertEqual(ev['lines'], [['a', 1], ['b', 2]])\\n\\n def test_reserve_sort_uses_python_string_ordering(self):\\n ev = parse_event(\\n '{\\\"id\\\": \\\"R1\\\", \\\"op\\\": \\\"reserve\\\", \\\"request\\\": \\\"REQ\\\", '\\n '\\\"lines\\\": [[\\\"b\\\", 1], [\\\"A\\\", 1], [\\\"a\\\", 1], [\\\"10\\\", 1]]}')\\n self.assertEqual(ev['lines'], [['10', 1], ['A', 1], ['a', 1], ['b', 1]])\\n\\n\\nclass IdentifierPreservationTests(unittest.TestCase):\\n def test_whitespace_backslash_unicode_preserved(self):\\n ids = [' hello ', 'with\\\\\\\\pipe|chars', 'caf\\\\u00e9 \\\\u4e2d\\\\u6587',\\n '\\\\t', 'a b']\\n for ident in ids:\\n line = ('{\\\"id\\\": %r, \\\"op\\\": \\\"restock\\\", \\\"sku\\\": \\\"S\\\", \\\"qty\\\": 1}'\\n % ident)\\n ev = parse_event(line)\\n self.assertEqual(ev['id'], ident)\\n\\n def test_space_is_nonempty(self):\\n ev = parse_event('{\\\"id\\\": \\\"a\\\", \\\"op\\\": \\\"restock\\\", \\\"sku\\\": \\\" \\\", \\\"qty\\\": 1}')\\n self.assertEqual(ev['sku'], ' ')\\n\\n def test_request_preserved(self):\\n req = 'a|b\\\\\\\\c \\\\u00e9'\\n line = ('{\\\"id\\\": \\\"a\\\", \\\"op\\\": \\\"cancel\\\", \\\"request\\\": %r}' % req)\\n ev = parse_event(line)\\n self.assertEqual(ev['request'], req)\\n\\n\\nclass QuantityTests(unittest.TestCase):\\n def test_boolean_quantity_rejected(self):\\n with self.assertRaises(ValueError):\\n parse_event(\\n '{\\\"id\\\": \\\"a\\\", \\\"op\\\": \\\"restock\\\", \\\"sku\\\": \\\"S\\\", \\\"qty\\\": true}')\\n with self.assertRaises(ValueError):\\n parse_event(\\n '{\\\"id\\\": \\\"a\\\", \\\"op\\\": \\\"reserve\\\", \\\"request\\\": \\\"r\\\", '\\n '\\\"lines\\\": [[\\\"S\\\", true]]}')\\n\\n def test_float_quantity_rejected(self):\\n with self.assertRaises(ValueError):\\n parse_event(\\n '{\\\"id\\\": \\\"a\\\", \\\"op\\\": \\\"restock\\\", \\\"sku\\\": \\\"S\\\", \\\"qty\\\": 1.5}')\\n with self.assertRaises(ValueError):\\n parse_event(\\n '{\\\"id\\\": \\\"a\\\", \\\"op\\\": \\\"reserve\\\", \\\"request\\\": \\\"r\\\", '\\n '\\\"lines\\\": [[\\\"S\\\", 2.0]]}')\\n\\n def test_zero_and_negative_rejected(self):\\n for q in [0, -1, -5]:\\n with self.assertRaises(ValueError):\\n parse_event(\\n '{\\\"id\\\": \\\"a\\\", \\\"op\\\": \\\"restock\\\", \\\"sku\\\": \\\"S\\\", \\\"qty\\\": %d}'\\n % q)\\n with self.assertRaises(ValueError):\\n parse_event(\\n '{\\\"id\\\": \\\"a\\\", \\\"op\\\": \\\"reserve\\\", \\\"request\\\": \\\"r\\\", '\\n '\\\"lines\\\": [[\\\"S\\\", %d]]}' % q)\\n\\n def test_empty_request_forbidden(self):\\n with self.assertRaises(ValueError):\\n parse_event('{\\\"id\\\": \\\"a\\\", \\\"op\\\": \\\"cancel\\\", \\\"request\\\": \\\"\\\"}')\\n\\n def test_empty_sku_forbidden(self):\\n with self.assertRaises(ValueError):\\n parse_event('{\\\"id\\\": \\\"a\\\", \\\"op\\\": \\\"restock\\\", \\\"sku\\\": \\\"\\\", \\\"qty\\\": 1}')\\n\\n\\nclass DetachmentTests(unittest.TestCase):\\n def test_returned_dict_is_fresh(self):\\n line = '{\\\"id\\\": \\\"a\\\", \\\"op\\\": \\\"restock\\\", \\\"sku\\\": \\\"S\\\", \\\"qty\\\": 1}'\\n ev = parse_event(line)\\n mutated = dict(ev)\\n mutated['id'] = 'changed'\\n mutated['extra'] = 1\\n # Original dict is unchanged.\\n self.assertEqual(ev['id'], 'a')\\n self.assertNotIn('extra', ev)\\n\\n def test_reserve_return_does_not_alias_input(self):\\n line = (\\n '{\\\"id\\\": \\\"a\\\", \\\"op\\\": \\\"reserve\\\", \\\"request\\\": \\\"r\\\", '\\n '\\\"lines\\\": [[\\\"a\\\", 1], [\\\"a\\\", 2]]}')\\n ev = parse_event(line)\\n self.assertEqual(ev['lines'], [['a', 3]])\\n\\n\\nif __name__ == '__main__':\\n unittest.main()\", \"summary\": \"Create test_codec.py\"}",
"origin": "completion"
},
"llm_response_id": "gen-1792417489-Obq1L7pKXEjhfONo0uuF",
"security_risk": "UNKNOWN",
"critic_result": null,
"summary": "Create test_codec.py",
"kind": "ActionEvent",
"thought": []
}14. ObservationEvent file_editor
{
"id": "5f4bc146-1ed4-4007-ab50-137acc3715d7",
"timestamp": "2026-10-19T08:45:09.217057",
"source": "environment",
"parent_id": "70d5bc22-bb8c-449a-b334-04d73ef55d4f",
"tool_name": "file_editor",
"tool_call_id": "call_37f6baa6c6744d2ebc073f5f",
"observation": {
"content": [
{
"cache_prompt": false,
"type": "text",
"text": "Updated /workspace/test_codec.py\nimport unittest\n\nfrom codec import parse_event\n\n\ndef raises(func, *args):\n with unittest.TestCase().assertRaises(ValueError):\n func(*args)\n\n\nclass MalformedJsonTests(unittest.TestCase):\n def test_malformed_json_raises(self):\n for bad in ['', '{', '{\"id\":', '[1,2', '{\"id\": \"x\", }', 'not json',\n '{\"id\": \"x\"', '{\"id\": \"x\", \"op\": \"restock\"} junk']:\n with self.assertRaises(ValueError):\n parse_event(bad)\n\n def test_non_string_input_raises(self):\n for bad in [None, 5, 3.14, ['a'], {'a': 1}, b'{\"id\": \"x\"}']:\n with self.assertRaises(ValueError):\n parse_event(bad)\n\n\nclass DuplicateKeyTests(unittest.TestCase):\n def test_duplicate_top_level_keys_raise(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"id\": \"b\", \"op\": \"cancel\", \"request\": \"r\"}')\n\n def test_duplicate_nested_object_keys_raise(self):\n # Nested object duplicate key inside a field value.\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [{\"x\": 1, \"x\": 2}]}')\n\n\nclass NonObjectAndUnsupportedTests(unittest.TestCase):\n def test_non_object_events_raise(self):\n for bad in ['[]', '\"str\"', '5', 'null', 'true']:\n with self.assertRaises(ValueError):\n parse_event(bad)\n\n def test_unsupported_op_raises(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"ship\", \"sku\": \"S\", \"qty\": 1}')\n\n def test_missing_op_raises(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"request\": \"r\"}')\n\n\nclass FieldShapeTests(unittest.TestCase):\n def test_missing_fields_raise(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\"}')\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"restock\", \"qty\": 1}')\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"cancel\"}')\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\"}')\n with self.assertRaises(ValueError):\n parse_event('{\"op\": \"restock\", \"sku\": \"S\", \"qty\": 1}')\n\n def test_extra_fields_raise(self):\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1, \"x\": 1}')\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"cancel\", \"request\": \"r\", \"sku\": \"S\"}')\n\n def test_empty_ids_forbidden(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1}')\n\n\nclass CanonicalizationTests(unittest.TestCase):\n def test_restock_canonical(self):\n line = ' {\"id\": \"A1\", \"op\": \"restock\", \"sku\": \"SKU-1\", \"qty\": 7} '\n ev = parse_event(line)\n self.assertEqual(ev, {\n 'id': 'A1', 'op': 'restock', 'sku': 'SKU-1', 'qty': 7})\n\n def test_cancel_canonical(self):\n ev = parse_event('{\"id\": \"C1\", \"op\": \"cancel\", \"request\": \"REQ\"}')\n self.assertEqual(ev, {\n 'id': 'C1', 'op': 'cancel', 'request': 'REQ'})\n\n def test_reserve_empty_lines(self):\n ev = parse_event(\n '{\"id\": \"R1\", \"op\": \"reserve\", \"request\": \"REQ\", \"lines\": []}')\n self.assertEqual(ev['lines'], [])\n self.assertIsInstance(ev['lines'], list)\n\n def test_reserve_aggregation_and_sort(self):\n line = (\n '{\"id\": \"R1\", \"op\": \"reserve\", \"request\": \"REQ\", \"lines\": '\n '[[\"z\", 1], [\"a\", 5], [\"m\", 2], [\"a\", 3], [\"z\", 2]]}')\n ev = parse_event(line)\n self.assertEqual(ev['lines'], [['a', 8], ['m', 2], ['z', 3]])\n\n def test_reserve_lines_are_lists_not_tuples(self):\n ev = parse_event(\n '{\"id\": \"R1\", \"op\": \"reserve\", \"request\": \"REQ\", '\n '\"lines\": [[\"b\", 2], [\"a\", 1]]}')\n for pair in ev['lines']:\n self.assertIsInstance(pair, list)\n self.assertEqual(ev['lines'], [['a', 1], ['b', 2]])\n\n def test_reserve_sort_uses_python_string_ordering(self):\n ev = parse_event(\n '{\"id\": \"R1\", \"op\": \"reserve\", \"request\": \"REQ\", '\n '\"lines\": [[\"b\", 1], [\"A\", 1], [\"a\", 1], [\"10\", 1]]}')\n self.assertEqual(ev['lines'], [['10', 1], ['A', 1], ['a', 1], ['b', 1]])\n\n\nclass IdentifierPreservationTests(unittest.TestCase):\n def test_whitespace_backslash_unicode_preserved(self):\n ids = [' hello ', 'with\\\\pipe|chars', 'caf\\u00e9 \\u4e2d\\u6587',\n '\\t', 'a b']\n for ident in ids:\n line = ('{\"id\": %r, \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1}'\n % ident)\n ev = parse_event(line)\n self.assertEqual(ev['id'], ident)\n\n def test_space_is_nonempty(self):\n ev = parse_event('{\"id\": \"a\", \"op\": \"restock\", \"sku\": \" \", \"qty\": 1}')\n self.assertEqual(ev['sku'], ' ')\n\n def test_request_preserved(self):\n req = 'a|b\\\\c \\u00e9'\n line = ('{\"id\": \"a\", \"op\": \"cancel\", \"request\": %r}' % req)\n ev = parse_event(line)\n self.assertEqual(ev['request'], req)\n\n\nclass QuantityTests(unittest.TestCase):\n def test_boolean_quantity_rejected(self):\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": true}')\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [[\"S\", true]]}')\n\n def test_float_quantity_rejected(self):\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1.5}')\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [[\"S\", 2.0]]}')\n\n def test_zero_and_negative_rejected(self):\n for q in [0, -1, -5]:\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": %d}'\n % q)\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [[\"S\", %d]]}' % q)\n\n def test_empty_request_forbidden(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"cancel\", \"request\": \"\"}')\n\n def test_empty_sku_forbidden(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"\", \"qty\": 1}')\n\n\nclass DetachmentTests(unittest.TestCase):\n def test_returned_dict_is_fresh(self):\n line = '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1}'\n ev = parse_event(line)\n mutated = dict(ev)\n mutated['id'] = 'changed'\n mutated['extra'] = 1\n # Original dict is unchanged.\n self.assertEqual(ev['id'], 'a')\n self.assertNotIn('extra', ev)\n\n def test_reserve_return_does_not_alias_input(self):\n line = (\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [[\"a\", 1], [\"a\", 2]]}')\n ev = parse_event(line)\n self.assertEqual(ev['lines'], [['a', 3]])\n\n\nif __name__ == '__main__':\n unittest.main()"
}
],
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"path": "/workspace/test_codec.py",
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"old_content": null,
"new_content": null,
"kind": "FileEditorObservation"
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"kind": "ObservationEvent"
}15. ActionEvent file_editor
{
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"timestamp": "2026-10-19T08:45:17.251670",
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"responses_reasoning_item": null,
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"command": "str_replace",
"path": "/workspace/test_codec.py",
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"new_str": "import json\nimport unittest\n\nfrom codec import parse_event",
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"origin": "completion"
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"summary": "file_editor: {\"command\": \"str_replace\", \"path\": \"/workspace/test_codec.py\", \"old_str\": \"import unittest\\n\\nfrom codec import parse_event\", \"new_str\": \"import json\\nimport unittest\\n\\nfrom codec import parse_event\"}",
"kind": "ActionEvent",
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}16. ObservationEvent file_editor
{
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{
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"type": "text",
"text": "Updated /workspace/test_codec.py\nimport json\nimport unittest\n\nfrom codec import parse_event\n\n\ndef raises(func, *args):\n with unittest.TestCase().assertRaises(ValueError):\n func(*args)\n\n\nclass MalformedJsonTests(unittest.TestCase):\n def test_malformed_json_raises(self):\n for bad in ['', '{', '{\"id\":', '[1,2', '{\"id\": \"x\", }', 'not json',\n '{\"id\": \"x\"', '{\"id\": \"x\", \"op\": \"restock\"} junk']:\n with self.assertRaises(ValueError):\n parse_event(bad)\n\n def test_non_string_input_raises(self):\n for bad in [None, 5, 3.14, ['a'], {'a': 1}, b'{\"id\": \"x\"}']:\n with self.assertRaises(ValueError):\n parse_event(bad)\n\n\nclass DuplicateKeyTests(unittest.TestCase):\n def test_duplicate_top_level_keys_raise(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"id\": \"b\", \"op\": \"cancel\", \"request\": \"r\"}')\n\n def test_duplicate_nested_object_keys_raise(self):\n # Nested object duplicate key inside a field value.\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [{\"x\": 1, \"x\": 2}]}')\n\n\nclass NonObjectAndUnsupportedTests(unittest.TestCase):\n def test_non_object_events_raise(self):\n for bad in ['[]', '\"str\"', '5', 'null', 'true']:\n with self.assertRaises(ValueError):\n parse_event(bad)\n\n def test_unsupported_op_raises(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"ship\", \"sku\": \"S\", \"qty\": 1}')\n\n def test_missing_op_raises(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"request\": \"r\"}')\n\n\nclass FieldShapeTests(unittest.TestCase):\n def test_missing_fields_raise(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\"}')\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"restock\", \"qty\": 1}')\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"cancel\"}')\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\"}')\n with self.assertRaises(ValueError):\n parse_event('{\"op\": \"restock\", \"sku\": \"S\", \"qty\": 1}')\n\n def test_extra_fields_raise(self):\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1, \"x\": 1}')\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"cancel\", \"request\": \"r\", \"sku\": \"S\"}')\n\n def test_empty_ids_forbidden(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1}')\n\n\nclass CanonicalizationTests(unittest.TestCase):\n def test_restock_canonical(self):\n line = ' {\"id\": \"A1\", \"op\": \"restock\", \"sku\": \"SKU-1\", \"qty\": 7} '\n ev = parse_event(line)\n self.assertEqual(ev, {\n 'id': 'A1', 'op': 'restock', 'sku': 'SKU-1', 'qty': 7})\n\n def test_cancel_canonical(self):\n ev = parse_event('{\"id\": \"C1\", \"op\": \"cancel\", \"request\": \"REQ\"}')\n self.assertEqual(ev, {\n 'id': 'C1', 'op': 'cancel', 'request': 'REQ'})\n\n def test_reserve_empty_lines(self):\n ev = parse_event(\n '{\"id\": \"R1\", \"op\": \"reserve\", \"request\": \"REQ\", \"lines\": []}')\n self.assertEqual(ev['lines'], [])\n self.assertIsInstance(ev['lines'], list)\n\n def test_reserve_aggregation_and_sort(self):\n line = (\n '{\"id\": \"R1\", \"op\": \"reserve\", \"request\": \"REQ\", \"lines\": '\n '[[\"z\", 1], [\"a\", 5], [\"m\", 2], [\"a\", 3], [\"z\", 2]]}')\n ev = parse_event(line)\n self.assertEqual(ev['lines'], [['a', 8], ['m', 2], ['z', 3]])\n\n def test_reserve_lines_are_lists_not_tuples(self):\n ev = parse_event(\n '{\"id\": \"R1\", \"op\": \"reserve\", \"request\": \"REQ\", '\n '\"lines\": [[\"b\", 2], [\"a\", 1]]}')\n for pair in ev['lines']:\n self.assertIsInstance(pair, list)\n self.assertEqual(ev['lines'], [['a', 1], ['b', 2]])\n\n def test_reserve_sort_uses_python_string_ordering(self):\n ev = parse_event(\n '{\"id\": \"R1\", \"op\": \"reserve\", \"request\": \"REQ\", '\n '\"lines\": [[\"b\", 1], [\"A\", 1], [\"a\", 1], [\"10\", 1]]}')\n self.assertEqual(ev['lines'], [['10', 1], ['A', 1], ['a', 1], ['b', 1]])\n\n\nclass IdentifierPreservationTests(unittest.TestCase):\n def test_whitespace_backslash_unicode_preserved(self):\n ids = [' hello ', 'with\\\\pipe|chars', 'caf\\u00e9 \\u4e2d\\u6587',\n '\\t', 'a b']\n for ident in ids:\n line = ('{\"id\": %r, \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1}'\n % ident)\n ev = parse_event(line)\n self.assertEqual(ev['id'], ident)\n\n def test_space_is_nonempty(self):\n ev = parse_event('{\"id\": \"a\", \"op\": \"restock\", \"sku\": \" \", \"qty\": 1}')\n self.assertEqual(ev['sku'], ' ')\n\n def test_request_preserved(self):\n req = 'a|b\\\\c \\u00e9'\n line = ('{\"id\": \"a\", \"op\": \"cancel\", \"request\": %r}' % req)\n ev = parse_event(line)\n self.assertEqual(ev['request'], req)\n\n\nclass QuantityTests(unittest.TestCase):\n def test_boolean_quantity_rejected(self):\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": true}')\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [[\"S\", true]]}')\n\n def test_float_quantity_rejected(self):\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1.5}')\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [[\"S\", 2.0]]}')\n\n def test_zero_and_negative_rejected(self):\n for q in [0, -1, -5]:\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": %d}'\n % q)\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [[\"S\", %d]]}' % q)\n\n def test_empty_request_forbidden(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"cancel\", \"request\": \"\"}')\n\n def test_empty_sku_forbidden(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"\", \"qty\": 1}')\n\n\nclass DetachmentTests(unittest.TestCase):\n def test_returned_dict_is_fresh(self):\n line = '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1}'\n ev = parse_event(line)\n mutated = dict(ev)\n mutated['id'] = 'changed'\n mutated['extra'] = 1\n # Original dict is unchanged.\n self.assertEqual(ev['id'], 'a')\n self.assertNotIn('extra', ev)\n\n def test_reserve_return_does_not_alias_input(self):\n line = (\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [[\"a\", 1], [\"a\", 2]]}')\n ev = parse_event(line)\n self.assertEqual(ev['lines'], [['a', 3]])\n\n\nif __name__ == '__main__':\n unittest.main()"
}
],
"is_error": false,
"command": "str_replace",
"path": "/workspace/test_codec.py",
"prev_exist": true,
"old_content": null,
"new_content": null,
"kind": "FileEditorObservation"
},
"action_id": "4b79237c-cbd4-414b-ab12-9a616bd62fd2",
"extended_content": [],
"kind": "ObservationEvent"
}17. ActionEvent file_editor
{
"id": "8877c064-c028-402b-bcc0-273f44214392",
"timestamp": "2026-10-19T08:45:21.595292",
"source": "agent",
"parent_id": "16d5f59d-7173-4867-adf6-e950c8f5c848",
"responses_reasoning_item": null,
"action": {
"command": "str_replace",
"path": "/workspace/test_codec.py",
"file_text": null,
"old_str": "for ident in ids:\n line = ('{\"id\": %r, \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1}'\n % ident)\n ev = parse_event(line)\n self.assertEqual(ev['id'], ident)",
"new_str": "for ident in ids:\n payload = {'id': ident, 'op': 'restock', 'sku': 'S', 'qty': 1}\n ev = parse_event(json.dumps(payload))\n self.assertEqual(ev['id'], ident)",
"insert_line": null,
"view_range": null,
"kind": "FileEditorAction"
},
"tool_name": "file_editor",
"tool_call_id": "call_ffc8b1c0693a46b98ae9dc0a",
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"id": "call_ffc8b1c0693a46b98ae9dc0a",
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"name": "file_editor",
"arguments": "{\"command\": \"str_replace\", \"path\": \"/workspace/test_codec.py\", \"old_str\": \"for ident in ids:\\n line = ('{\\\"id\\\": %r, \\\"op\\\": \\\"restock\\\", \\\"sku\\\": \\\"S\\\", \\\"qty\\\": 1}'\\n % ident)\\n ev = parse_event(line)\\n self.assertEqual(ev['id'], ident)\", \"new_str\": \"for ident in ids:\\n payload = {'id': ident, 'op': 'restock', 'sku': 'S', 'qty': 1}\\n ev = parse_event(json.dumps(payload))\\n self.assertEqual(ev['id'], ident)\"}",
"origin": "completion"
},
"llm_response_id": "gen-1792417517-jXjR97XBCg5DaSMv7LvU",
"security_risk": "UNKNOWN",
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"summary": "file_editor: {\"command\": \"str_replace\", \"path\": \"/workspace/test_codec.py\", \"old_str\": \"for ident in ids:\\n line = ('{\\\"id\\\": %r, \\\"op\\\": \\\"restock\\\", \\\"sku\\\": \\\"S\\\", \\\"qty\\\": 1}'\\n % ident)\\n ev = parse_event(line)\\n self.assertEqual(ev['id'], ident)\", \"new_str\": \"for ident in ids:\\n payload = {'id': ident, 'op': 'restock', 'sku': 'S', 'qty': 1}\\n ev = parse_event(json.dumps(payload))\\n self.assertEqual(ev['id'], ident)\"}",
"kind": "ActionEvent",
"thought": []
}18. ObservationEvent file_editor
{
"id": "0d34abe3-c835-4a13-81bf-932be7fb2bc9",
"timestamp": "2026-10-19T08:45:21.736261",
"source": "environment",
"parent_id": "8877c064-c028-402b-bcc0-273f44214392",
"tool_name": "file_editor",
"tool_call_id": "call_ffc8b1c0693a46b98ae9dc0a",
"observation": {
"content": [
{
"cache_prompt": false,
"type": "text",
"text": "Updated /workspace/test_codec.py\nimport json\nimport unittest\n\nfrom codec import parse_event\n\n\ndef raises(func, *args):\n with unittest.TestCase().assertRaises(ValueError):\n func(*args)\n\n\nclass MalformedJsonTests(unittest.TestCase):\n def test_malformed_json_raises(self):\n for bad in ['', '{', '{\"id\":', '[1,2', '{\"id\": \"x\", }', 'not json',\n '{\"id\": \"x\"', '{\"id\": \"x\", \"op\": \"restock\"} junk']:\n with self.assertRaises(ValueError):\n parse_event(bad)\n\n def test_non_string_input_raises(self):\n for bad in [None, 5, 3.14, ['a'], {'a': 1}, b'{\"id\": \"x\"}']:\n with self.assertRaises(ValueError):\n parse_event(bad)\n\n\nclass DuplicateKeyTests(unittest.TestCase):\n def test_duplicate_top_level_keys_raise(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"id\": \"b\", \"op\": \"cancel\", \"request\": \"r\"}')\n\n def test_duplicate_nested_object_keys_raise(self):\n # Nested object duplicate key inside a field value.\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [{\"x\": 1, \"x\": 2}]}')\n\n\nclass NonObjectAndUnsupportedTests(unittest.TestCase):\n def test_non_object_events_raise(self):\n for bad in ['[]', '\"str\"', '5', 'null', 'true']:\n with self.assertRaises(ValueError):\n parse_event(bad)\n\n def test_unsupported_op_raises(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"ship\", \"sku\": \"S\", \"qty\": 1}')\n\n def test_missing_op_raises(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"request\": \"r\"}')\n\n\nclass FieldShapeTests(unittest.TestCase):\n def test_missing_fields_raise(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\"}')\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"restock\", \"qty\": 1}')\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"cancel\"}')\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\"}')\n with self.assertRaises(ValueError):\n parse_event('{\"op\": \"restock\", \"sku\": \"S\", \"qty\": 1}')\n\n def test_extra_fields_raise(self):\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1, \"x\": 1}')\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"cancel\", \"request\": \"r\", \"sku\": \"S\"}')\n\n def test_empty_ids_forbidden(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1}')\n\n\nclass CanonicalizationTests(unittest.TestCase):\n def test_restock_canonical(self):\n line = ' {\"id\": \"A1\", \"op\": \"restock\", \"sku\": \"SKU-1\", \"qty\": 7} '\n ev = parse_event(line)\n self.assertEqual(ev, {\n 'id': 'A1', 'op': 'restock', 'sku': 'SKU-1', 'qty': 7})\n\n def test_cancel_canonical(self):\n ev = parse_event('{\"id\": \"C1\", \"op\": \"cancel\", \"request\": \"REQ\"}')\n self.assertEqual(ev, {\n 'id': 'C1', 'op': 'cancel', 'request': 'REQ'})\n\n def test_reserve_empty_lines(self):\n ev = parse_event(\n '{\"id\": \"R1\", \"op\": \"reserve\", \"request\": \"REQ\", \"lines\": []}')\n self.assertEqual(ev['lines'], [])\n self.assertIsInstance(ev['lines'], list)\n\n def test_reserve_aggregation_and_sort(self):\n line = (\n '{\"id\": \"R1\", \"op\": \"reserve\", \"request\": \"REQ\", \"lines\": '\n '[[\"z\", 1], [\"a\", 5], [\"m\", 2], [\"a\", 3], [\"z\", 2]]}')\n ev = parse_event(line)\n self.assertEqual(ev['lines'], [['a', 8], ['m', 2], ['z', 3]])\n\n def test_reserve_lines_are_lists_not_tuples(self):\n ev = parse_event(\n '{\"id\": \"R1\", \"op\": \"reserve\", \"request\": \"REQ\", '\n '\"lines\": [[\"b\", 2], [\"a\", 1]]}')\n for pair in ev['lines']:\n self.assertIsInstance(pair, list)\n self.assertEqual(ev['lines'], [['a', 1], ['b', 2]])\n\n def test_reserve_sort_uses_python_string_ordering(self):\n ev = parse_event(\n '{\"id\": \"R1\", \"op\": \"reserve\", \"request\": \"REQ\", '\n '\"lines\": [[\"b\", 1], [\"A\", 1], [\"a\", 1], [\"10\", 1]]}')\n self.assertEqual(ev['lines'], [['10', 1], ['A', 1], ['a', 1], ['b', 1]])\n\n\nclass IdentifierPreservationTests(unittest.TestCase):\n def test_whitespace_backslash_unicode_preserved(self):\n ids = [' hello ', 'with\\\\pipe|chars', 'caf\\u00e9 \\u4e2d\\u6587',\n '\\t', 'a b']\n for ident in ids:\n payload = {'id': ident, 'op': 'restock', 'sku': 'S', 'qty': 1}\n ev = parse_event(json.dumps(payload))\n self.assertEqual(ev['id'], ident)\n\n def test_space_is_nonempty(self):\n ev = parse_event('{\"id\": \"a\", \"op\": \"restock\", \"sku\": \" \", \"qty\": 1}')\n self.assertEqual(ev['sku'], ' ')\n\n def test_request_preserved(self):\n req = 'a|b\\\\c \\u00e9'\n line = ('{\"id\": \"a\", \"op\": \"cancel\", \"request\": %r}' % req)\n ev = parse_event(line)\n self.assertEqual(ev['request'], req)\n\n\nclass QuantityTests(unittest.TestCase):\n def test_boolean_quantity_rejected(self):\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": true}')\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [[\"S\", true]]}')\n\n def test_float_quantity_rejected(self):\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1.5}')\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [[\"S\", 2.0]]}')\n\n def test_zero_and_negative_rejected(self):\n for q in [0, -1, -5]:\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": %d}'\n % q)\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [[\"S\", %d]]}' % q)\n\n def test_empty_request_forbidden(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"cancel\", \"request\": \"\"}')\n\n def test_empty_sku_forbidden(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"\", \"qty\": 1}')\n\n\nclass DetachmentTests(unittest.TestCase):\n def test_returned_dict_is_fresh(self):\n line = '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1}'\n ev = parse_event(line)\n mutated = dict(ev)\n mutated['id'] = 'changed'\n mutated['extra'] = 1\n # Original dict is unchanged.\n self.assertEqual(ev['id'], 'a')\n self.assertNotIn('extra', ev)\n\n def test_reserve_return_does_not_alias_input(self):\n line = (\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [[\"a\", 1], [\"a\", 2]]}')\n ev = parse_event(line)\n self.assertEqual(ev['lines'], [['a', 3]])\n\n\nif __name__ == '__main__':\n unittest.main()"
}
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}20. ObservationEvent file_editor
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"text": "Updated /workspace/test_codec.py\nimport json\nimport unittest\n\nfrom codec import parse_event\n\n\ndef raises(func, *args):\n with unittest.TestCase().assertRaises(ValueError):\n func(*args)\n\n\nclass MalformedJsonTests(unittest.TestCase):\n def test_malformed_json_raises(self):\n for bad in ['', '{', '{\"id\":', '[1,2', '{\"id\": \"x\", }', 'not json',\n '{\"id\": \"x\"', '{\"id\": \"x\", \"op\": \"restock\"} junk']:\n with self.assertRaises(ValueError):\n parse_event(bad)\n\n def test_non_string_input_raises(self):\n for bad in [None, 5, 3.14, ['a'], {'a': 1}, b'{\"id\": \"x\"}']:\n with self.assertRaises(ValueError):\n parse_event(bad)\n\n\nclass DuplicateKeyTests(unittest.TestCase):\n def test_duplicate_top_level_keys_raise(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"id\": \"b\", \"op\": \"cancel\", \"request\": \"r\"}')\n\n def test_duplicate_nested_object_keys_raise(self):\n # Nested object duplicate key inside a field value.\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [{\"x\": 1, \"x\": 2}]}')\n\n\nclass NonObjectAndUnsupportedTests(unittest.TestCase):\n def test_non_object_events_raise(self):\n for bad in ['[]', '\"str\"', '5', 'null', 'true']:\n with self.assertRaises(ValueError):\n parse_event(bad)\n\n def test_unsupported_op_raises(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"ship\", \"sku\": \"S\", \"qty\": 1}')\n\n def test_missing_op_raises(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"request\": \"r\"}')\n\n\nclass FieldShapeTests(unittest.TestCase):\n def test_missing_fields_raise(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\"}')\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"restock\", \"qty\": 1}')\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"cancel\"}')\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\"}')\n with self.assertRaises(ValueError):\n parse_event('{\"op\": \"restock\", \"sku\": \"S\", \"qty\": 1}')\n\n def test_extra_fields_raise(self):\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1, \"x\": 1}')\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"cancel\", \"request\": \"r\", \"sku\": \"S\"}')\n\n def test_empty_ids_forbidden(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1}')\n\n\nclass CanonicalizationTests(unittest.TestCase):\n def test_restock_canonical(self):\n line = ' {\"id\": \"A1\", \"op\": \"restock\", \"sku\": \"SKU-1\", \"qty\": 7} '\n ev = parse_event(line)\n self.assertEqual(ev, {\n 'id': 'A1', 'op': 'restock', 'sku': 'SKU-1', 'qty': 7})\n\n def test_cancel_canonical(self):\n ev = parse_event('{\"id\": \"C1\", \"op\": \"cancel\", \"request\": \"REQ\"}')\n self.assertEqual(ev, {\n 'id': 'C1', 'op': 'cancel', 'request': 'REQ'})\n\n def test_reserve_empty_lines(self):\n ev = parse_event(\n '{\"id\": \"R1\", \"op\": \"reserve\", \"request\": \"REQ\", \"lines\": []}')\n self.assertEqual(ev['lines'], [])\n self.assertIsInstance(ev['lines'], list)\n\n def test_reserve_aggregation_and_sort(self):\n line = (\n '{\"id\": \"R1\", \"op\": \"reserve\", \"request\": \"REQ\", \"lines\": '\n '[[\"z\", 1], [\"a\", 5], [\"m\", 2], [\"a\", 3], [\"z\", 2]]}')\n ev = parse_event(line)\n self.assertEqual(ev['lines'], [['a', 8], ['m', 2], ['z', 3]])\n\n def test_reserve_lines_are_lists_not_tuples(self):\n ev = parse_event(\n '{\"id\": \"R1\", \"op\": \"reserve\", \"request\": \"REQ\", '\n '\"lines\": [[\"b\", 2], [\"a\", 1]]}')\n for pair in ev['lines']:\n self.assertIsInstance(pair, list)\n self.assertEqual(ev['lines'], [['a', 1], ['b', 2]])\n\n def test_reserve_sort_uses_python_string_ordering(self):\n ev = parse_event(\n '{\"id\": \"R1\", \"op\": \"reserve\", \"request\": \"REQ\", '\n '\"lines\": [[\"b\", 1], [\"A\", 1], [\"a\", 1], [\"10\", 1]]}')\n self.assertEqual(ev['lines'], [['10', 1], ['A', 1], ['a', 1], ['b', 1]])\n\n\nclass IdentifierPreservationTests(unittest.TestCase):\n def test_whitespace_backslash_unicode_preserved(self):\n ids = [' hello ', 'with\\\\pipe|chars', 'caf\\u00e9 \\u4e2d\\u6587',\n '\\t', 'a b']\n for ident in ids:\n payload = {'id': ident, 'op': 'restock', 'sku': 'S', 'qty': 1}\n ev = parse_event(json.dumps(payload))\n self.assertEqual(ev['id'], ident)\n\n def test_space_is_nonempty(self):\n ev = parse_event('{\"id\": \"a\", \"op\": \"restock\", \"sku\": \" \", \"qty\": 1}')\n self.assertEqual(ev['sku'], ' ')\n\n def test_request_preserved(self):\n req = 'a|b\\\\c \\u00e9'\n line = json.dumps({'id': 'a', 'op': 'cancel', 'request': req})\n ev = parse_event(line)\n self.assertEqual(ev['request'], req)\n\n\nclass QuantityTests(unittest.TestCase):\n def test_boolean_quantity_rejected(self):\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": true}')\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [[\"S\", true]]}')\n\n def test_float_quantity_rejected(self):\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1.5}')\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [[\"S\", 2.0]]}')\n\n def test_zero_and_negative_rejected(self):\n for q in [0, -1, -5]:\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": %d}'\n % q)\n with self.assertRaises(ValueError):\n parse_event(\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [[\"S\", %d]]}' % q)\n\n def test_empty_request_forbidden(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"cancel\", \"request\": \"\"}')\n\n def test_empty_sku_forbidden(self):\n with self.assertRaises(ValueError):\n parse_event('{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"\", \"qty\": 1}')\n\n\nclass DetachmentTests(unittest.TestCase):\n def test_returned_dict_is_fresh(self):\n line = '{\"id\": \"a\", \"op\": \"restock\", \"sku\": \"S\", \"qty\": 1}'\n ev = parse_event(line)\n mutated = dict(ev)\n mutated['id'] = 'changed'\n mutated['extra'] = 1\n # Original dict is unchanged.\n self.assertEqual(ev['id'], 'a')\n self.assertNotIn('extra', ev)\n\n def test_reserve_return_does_not_alias_input(self):\n line = (\n '{\"id\": \"a\", \"op\": \"reserve\", \"request\": \"r\", '\n '\"lines\": [[\"a\", 1], [\"a\", 2]]}')\n ev = parse_event(line)\n self.assertEqual(ev['lines'], [['a', 3]])\n\n\nif __name__ == '__main__':\n unittest.main()"
}
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}21. ActionEvent terminal
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}22. ObservationEvent terminal
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{
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"type": "text",
"text": "test_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\n\n----------------------------------------------------------------------\nRan 27 tests in 0.002s\n\nOK\n"
}
],
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}23. ActionEvent finish
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"message": "Codec worker complete.\n\nFiles changed:\n- /workspace/codec.py\n- /workspace/test_codec.py\n\ncodec.py changes (bug fixes):\n1. `integer()` now explicitly rejects booleans (`not isinstance(value, bool)`). Previously `isinstance(True, int)` is True in Python, so boolean quantities were incorrectly accepted. This now satisfies the \"Booleans are never integer quantities\" rule for both restock and reserve quantities.\n2. Reserve duplicate-SKU aggregation now SUMS quantities: changed `quantities[sku] = qty` to `quantities[sku] = quantities.get(sku, 0) + qty`. Previously duplicate SKUs were overwritten rather than aggregated. Kept ordering by Python string sort via `sorted(quantities.items())`, and canonical lines remain lists (not tuples).\n\nAll other logic in codec.py was already correct per the contract: `unique_object`/`object_pairs_hook` for duplicate-key rejection, `read_json` for non-string/malformed JSON -> ValueError, exact field-set validation for extra/missing fields, nonempty-string checks, whitespace/backslash/Unicode preservation, float/zero/negative quantity rejection, and detached fresh dict from `json.loads`.\n\ntest_codec.py (created new file) — 26 unit tests covering:\n- malformed JSON + non-string input raise ValueError\n- duplicate JSON object keys at top level and at nested depth raise ValueError\n- non-object events and unsupported/missing ops raise ValueError\n- extra/missing fields raise ValueError; empty id/request/sku forbidden\n- restock/cancel/reserve canonicalization, whitespace-surrounded input accepted\n- reserve duplicate SKU aggregation, Python string sort ordering, arrays-not-tuples, empty lines\n- whitespace/backslash/Unicode identifier preservation, lone-space-is-nonempty, request preservation\n- boolean quantity rejected (restock + reserve), float rejected, zero/negative rejected\n- detached-return checks (mutating a copy doesn't affect original; aggregated lines are correct)\n\nTest command & result:\ncd /workspace && python3 -m unittest -v\nRan 27 tests (26 codec + 1 existing smoke test in test_importer.py) ... OK\n\nUnresolved interface issues: none within my codec role. I only edited the two files I own (codec.py, test_codec.py); other files were left untouched.",
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"text": "Codec worker complete.\n\nFiles changed:\n- /workspace/codec.py\n- /workspace/test_codec.py\n\ncodec.py changes (bug fixes):\n1. `integer()` now explicitly rejects booleans (`not isinstance(value, bool)`). Previously `isinstance(True, int)` is True in Python, so boolean quantities were incorrectly accepted. This now satisfies the \"Booleans are never integer quantities\" rule for both restock and reserve quantities.\n2. Reserve duplicate-SKU aggregation now SUMS quantities: changed `quantities[sku] = qty` to `quantities[sku] = quantities.get(sku, 0) + qty`. Previously duplicate SKUs were overwritten rather than aggregated. Kept ordering by Python string sort via `sorted(quantities.items())`, and canonical lines remain lists (not tuples).\n\nAll other logic in codec.py was already correct per the contract: `unique_object`/`object_pairs_hook` for duplicate-key rejection, `read_json` for non-string/malformed JSON -> ValueError, exact field-set validation for extra/missing fields, nonempty-string checks, whitespace/backslash/Unicode preservation, float/zero/negative quantity rejection, and detached fresh dict from `json.loads`.\n\ntest_codec.py (created new file) — 26 unit tests covering:\n- malformed JSON + non-string input raise ValueError\n- duplicate JSON object keys at top level and at nested depth raise ValueError\n- non-object events and unsupported/missing ops raise ValueError\n- extra/missing fields raise ValueError; empty id/request/sku forbidden\n- restock/cancel/reserve canonicalization, whitespace-surrounded input accepted\n- reserve duplicate SKU aggregation, Python string sort ordering, arrays-not-tuples, empty lines\n- whitespace/backslash/Unicode identifier preservation, lone-space-is-nonempty, request preservation\n- boolean quantity rejected (restock + reserve), float rejected, zero/negative rejected\n- detached-return checks (mutating a copy doesn't affect original; aggregated lines are correct)\n\nTest command & result:\ncd /workspace && python3 -m unittest -v\nRan 27 tests (26 codec + 1 existing smoke test in test_importer.py) ... OK\n\nUnresolved interface issues: none within my codec role. I only edited the two files I own (codec.py, test_codec.py); other files were left untouched."
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}Back to all lecture examples