yellowjacket/.planning/milestones/v1.0-phases/04-queue-config-player-tests/04-01-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
04-queue-config-player-tests	01	testing	queue sqlite unit-tests shuffle repeat persistence	phase provides 03-test-infrastructure NewTestDB(t) helper for in-memory SQLite test databases	29 queue tests covering core ops, navigation, and persistence roundtrip Mock TrackLoader and seedAudioFiles test helpers in queue package Safety net for Phase 7 (PERF-01) queue persistence refactoring	07-performance-optimization	added patterns internal package tests (package queue, not queue_test) direct field manipulation for pure logic tests (no DB) seedAudioFiles helper with FK chain for DB-backed tests	created modified backend/queue/queue_test.go backend/queue/navigation_test.go backend/queue/persistence_test.go	Internal tests (package queue) to access unexported fields like shuffleOrder, mu Navigation tests use direct struct construction (no DB) for fast pure-logic testing Persistence roundtrip test verifies ALL state fields including shuffleOrder JSON	mockTrackLoader pattern: no-op TrackLoader with loadedFile tracking seedAudioFiles helper: creates FK chain (artist_credit → recordings → audio_files) for N tracks newTestQueueDirect: direct Queue construction for navigation/logic tests without DB	TEST-02	3min	2026-03-03

Phase 04 Plan 01: Queue Unit Tests Summary

29 unit tests for queue core operations (SetQueue, Add, Insert, Move, Remove, Shuffle, Repeat), navigation logic (Next/Previous in all modes), and SaveState/RestoreState persistence roundtrip

Performance

• Duration: 3 min
• Started: 2026-03-03T21:57:38Z
• Completed: 2026-03-03T22:00:46Z
• Tasks: 2
• Files modified: 3

Accomplishments

• 14 core operation tests: SetQueue (3 variants), AddTrack, InsertTracksAt (before/after current), MoveQueueTracks (forward/backward/current), RemoveTrack (normal/current), Clear, ToggleShuffle, CycleRepeat
• 9 navigation tests: nextIndex/previousIndex in RepeatOff/RepeatAll/RepeatOne modes, shuffle navigation, generateShuffleOrder property validation (all indices, no duplicates, current at [0])
• 6 persistence roundtrip tests: full state fidelity, empty/single/10-track edge cases, overwrite semantics, no-prior-save safety
• All 29 tests pass with -race flag

Task Commits

Each task was committed atomically:

1. Task 1: Queue core operations and navigation tests - 8d60dc0 (test)
2. Task 2: Queue persistence round-trip tests - 77cc993 (test)

Files Created/Modified

• backend/queue/queue_test.go - Core operation tests + mock TrackLoader + setupTestQueue/seedAudioFiles helpers
• backend/queue/navigation_test.go - Navigation edge case tests + shuffle order property tests
• backend/queue/persistence_test.go - SaveState/RestoreState roundtrip fidelity tests

Decisions Made

• Used internal tests (package queue) to access unexported fields (shuffleOrder, mu) — necessary for shuffle verification and roundtrip assertions
• Navigation tests bypass DB entirely using direct struct construction for fast, focused tests
• Roundtrip test asserts on shuffleOrder (JSON-serialized) to ensure Phase 7 refactoring won't silently lose shuffle state

Deviations from Plan

None - plan executed exactly as written.

Issues Encountered

None

User Setup Required

None - no external service configuration required.

Next Phase Readiness

• Queue test safety net complete — ready for Phase 7 (PERF-01) incremental persistence refactoring
• Test helpers (mockTrackLoader, seedAudioFiles) available for reuse in Plan 04-02 (config/player tests)
• Ready for Plan 04-02 execution

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Phase: 04-queue-config-player-tests Completed: 2026-03-03