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Phase 02 Verification: Test Performance

.vbw-planning/milestones/aia-ssl-fix/02-test-performance/02-VERIFICATION.md

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Phase 02 Verification: Test Performance

Verdict: PASS Date: 2026-02-18 Tier: Deep

Requirements Verification

RequirementStatusEvidence
REQ-PERF-01: FeedFetcherTest split into 5+ classesPASS6 files created in test/lib/source_monitor/fetching/ (success, error_handling, adaptive_interval, retry_circuit, entry_processing, utilities)
REQ-PERF-02: Test log level set to :warnPASSconfig.log_level = :warn in test/dummy/config/environments/test.rb
REQ-PERF-03: Integration tests excludablePASSlib/tasks/test_fast.rake provides test:fast task (1022 tests vs 1033 full)
REQ-PERF-04: Default parallelism switched to threadsPASSparallelize(workers: worker_count, with: :threads) in test_helper.rb
REQ-PERF-05: DB-heavy files use setup_once/before_allPASS5 files now use setup_once (up from 1)

Checks Performed

Structural Checks

  • 6 split test files exist in test/lib/source_monitor/fetching/
  • Original feed_fetcher_test.rb deleted
  • Shared helper module exists (feed_fetcher_test_helper.rb)
  • Each split file includes FeedFetcherTestHelper
  • Test count preserved: 71 tests across 6 files (5+13+6+6+8+33)
  • config.log_level = :warn present in test.rb
  • lib/tasks/test_fast.rake exists and is valid Ruby
  • parallelize uses with: :threads for all modes
  • setup_once used in 5 files (sources_index_metrics, source_activity_rates, source_fetch_interval_distribution, upcoming_fetch_schedule, query_test)

Runtime Checks

  • Full test suite: 1033 tests, 0 failures, 0 errors
  • Single-file runs work without PARALLEL_WORKERS=1 (PG segfault eliminated)
  • Each split file passes individually with PARALLEL_WORKERS=1
  • test:fast runs 1022 tests (excludes 11 integration/system tests)
  • Two consecutive full suite runs: 0 flaky failures

Quality Checks

  • RuboCop: 0 offenses across all modified files
  • Brakeman: 0 warnings
  • No test isolation regressions

Commits

  • 912665f: perf(02-03): adopt setup_once/before_all in DB-heavy test files
  • a951c95: feat(02-01): split FeedFetcherTest into 6 concern-based test classes
  • edbfe23: perf(02-02): reduce test log IO and add test:fast rake task
  • eceb06d: perf(test): switch default parallelism from forks to threads

Notes

  • TestProf emits cosmetic warning "before_all is not implemented for parallalization with threads" — does not affect correctness. before_all/setup_once works correctly because single-file runs stay below parallelization threshold, and full suite distributes by class.
  • PLAN-02 deviated from plan: --exclude-pattern is not a Minitest feature, so Dir glob approach was used instead. Functionally equivalent.