test(sveta): Write unit tests for frontier scheduling and concurrency safety
Outcome: done
Changed: tests/test_research_scheduling.py:1-506
Verified by: make verify -> exit_code 0, 198 tests OK (22 new), "verification passed"; only pre-existing StarletteDeprecationWarning from fastapi/testclient.py:1, none introduced
Findings: 22 stdlib-unittest tests with retoor header; bounded pool at config max_concurrency=8 drains 64 frontier queries issuing each exactly once (frontier.py:194, config.py:19); two concurrent pools never double-issue; late-enqueued queries drained; snapshot accounting consistent (frontier.py:218); dedup holds under concurrency: 64 concurrent push_query dups -> 1 enqueued/63 skipped, 64 concurrent register_url across normalized variants -> 1 seen/63 skipped (frontier.py:127,153,167), same-content-16-URLs -> 1 content; TTLCache repeat-key identity, unknown-key None, zero-TTL boundary, negative TTL, overwrite, clear, thread-safe under 16 threads x 256 keys and 128 same-key sets (cache.py:20-45); web/images/chat/describe/describe_raw funnel through one mechanism RsearchClient._request, web vs images differ only by type param (client.py:177); ResearchPipeline (pipeline.py) pool_size == max(1,max_concurrency), run() drains all WorkItems with endpoint map web/images->/search describe->/describe chat->/chat, semaphore bounds in-flight work to pool_size proven by peak tracking (pipeline.py:129-255); duplicate web items dedup at frontier (urls_seen 2, queries_enqueued 6 across 5 mixed items); mutation check: breaking register_url dedup flips s
Typosaurus-Run: 4e2afb673c7f4578a12276d9181b982d
Typosaurus-Node: 4159e2d87c90415bb7ca49e75f53a1b6
Typosaurus-Agent: @sveta
Refs: #31
typosaurus
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