yellowjacket/.planning/phases/05-database-library-tests/05-02-SUMMARY.md

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, requirements-completed, duration, completed

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	requirements-completed	duration	completed
05-database-library-tests	02	testing	library entity-cache sqlite unit-tests scan orphan-cleanup	phase provides 03-test-infrastructure NewTestDB(t) helper for in-memory SQLite test databases phase provides 04-queue-config-player-tests Established test patterns: t.Parallel(), internal tests, table-driven subtests	13 library scan tests covering entity cache, pure helpers, and orphan cleanup setupTestLibrary helper for Library + test DB construction Safety net for Phase 7 (PERF-01) performance optimization of scan logic	06-sql-consolidation 07-performance-optimization	added patterns direct Library struct construction for internal tests (bypasses Config.Validate) setupTestLibrary helper: NewTestDB + direct Library construction	created modified backend/library/scan_test.go	Construct Library directly in tests (bypass Config.Validate os.Stat) — entity cache functions only need ctx + db Document contentless FTS5 DeleteSearchIndex limitation — DELETE fails on content='' tables, production code logs warning Empty artist credit name creates a valid DB record — documents actual behavior	setupTestLibrary pattern: NewTestDB + direct Library struct with t.Context() (no Wails dependency) Entity cache tests: fresh newEntityCache() per test, verify cache map sizes after operations	TEST-06	4min	2026-03-04

Phase 05 Plan 02: Library Scan Tests Summary

13 unit tests for entity cache functions (cachedUpsertArtistCredit, cachedLinkArtist, cachedUpsertGenre, resolveReleaseGroup), pure helpers (getRecordingName, toNullInt64, toNullString, splitGenres, mapTrackRow), and orphan deletion with contentless FTS5 characterization

Performance

• Duration: 4 min
• Started: 2026-03-04T21:33:23Z
• Completed: 2026-03-04T21:38:02Z
• Tasks: 2
• Files modified: 1

Accomplishments

• 5 pure helper tests: getRecordingName (title present, filename fallback, complex path), toNullInt64 (zero/positive/negative), toNullString (empty/non-empty), splitGenres (empty/single/multiple), mapTrackRow (all 16 columns + NullInt64 null handling)
• 7 entity cache tests: cachedUpsertArtistCredit cache hit, cachedLinkArtist dedup + multi-credit, cachedUpsertGenre cache hit, resolveReleaseGroup with cover art update + empty album, resolveReleaseGroup cache hit with pre-populated cache
• 1 orphan cleanup test: DeleteAudioFile removes row, documents contentless FTS5 DeleteSearchIndex limitation
• All 13 tests use t.Parallel() and pass with -race flag
• Entity cache tests use plain context.Context via t.Context() — no Wails runtime dependency

Task Commits

Each task was committed atomically:

1. Task 1: Pure helper tests (no DB needed) - 6f96a94 (test)
2. Task 2: Entity cache + orphan cleanup tests (DB-backed) - fa6c378 (test)

Files Created/Modified

• backend/library/scan_test.go - 718 lines: pure helper tests, entity cache tests, orphan cleanup test, empty metadata test, setupTestLibrary helper

Decisions Made

• Constructed Library directly in tests (&Library{ctx: t.Context(), ...}) rather than using NewLibrary() — avoids Config.Validate() calling os.Stat on a directory, and entity cache functions only need l.ctx and l.db
• Documented contentless FTS5 limitation: DeleteSearchIndex errors on content='' tables — production orphan cleanup code logs this as a warning; stale FTS entries are harmless because JOINs to deleted audio_files return no results
• Empty artist credit name creates a valid DB record (UpsertArtistCredit("") succeeds) — test documents actual behavior rather than asserting an error

Deviations from Plan

None - plan executed exactly as written.

Issues Encountered

• Contentless FTS5 table (content='') does not support DELETE FROM search_index WHERE rowid = ? — adapted orphan deletion test to document this limitation rather than assert successful deletion. The production code handles this gracefully by logging a warning.

User Setup Required

None - no external service configuration required.

Next Phase Readiness

• Phase 05 complete — both database query tests (plan 01) and library scan tests (plan 02) delivered
• 13 new library scan tests provide safety net for Phase 7 performance optimization
• Contentless FTS5 limitation documented — relevant for Phase 6 SQL consolidation

Self-Check: PASSED

• backend/library/scan_test.go exists
• Commit 6f96a94 found
• Commit fa6c378 found

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Phase: 05-database-library-tests Completed: 2026-03-04