pluriwave/openspec/changes/archive/2026-07-19-android-auto-eq-presets/apply-progress.md

Apply Progress: android-auto-eq-presets

Mode: Strict TDD Batch: First and only batch — all 21 tasks completed in one pass.

Completed Tasks

Phase 1: Foundation — media-id scheme + root folder

• 1.1 [RED] esPresetMediaId table test
• 1.2 [GREEN] _prefijoPresetEq const + esPresetMediaId
• 1.3 [RED] raiz test updated to hasLength(4) + last-position assertions
• 1.4 [GREEN] idEcualizador const + raiz() appends Ecualizador folder last
• 1.5 [RED] itemPresetEq test
• 1.6 [GREEN] itemPresetEq
• 1.7 [RED] presetsEq test
• 1.8 [GREEN] presetsEq

Phase 2: Core Implementation — resolve, gate, orchestrate

• 2.1 [RED] resolverPresetEq table test
• 2.2 [GREEN] resolverPresetEq free function
• 2.3 [RED] debeAplicarPrincipalAhora table test
• 2.4 [GREEN] debeAplicarPrincipalAhora pure gate function
• 2.5 [RED] aplicarPresetPorMediaId known-preset gate-true/gate-false test
• 2.6 [RED] aplicarPresetPorMediaId unknown/stale-id no-op test
• 2.7 [RED] Structural non-playback invariant test (signature has no playback seam)
• 2.8 [GREEN] aplicarPresetPorMediaId orchestration

Phase 3: Integration / Wiring

• 3.1 getChildren — idEcualizador branch returns presetsEq(PresetEcualizador.presets)
• 3.2 playFromMediaId — eq_preset: branch as first statement, unconditional return, wrapped in method's outer try/catch
• 3.3 Import check — preset_ecualizador.dart already imported; added new servicio_ecualizador.dart import (required, was not previously imported in this file)

Phase 4: Testing / Verification

• 4.1 flutter test test/servicios/navegacion_auto_test.dart — 46/46 passing (independently re-run twice with default and compact reporters)
• 4.2 Grepped test/ tree for other raiz()/root-count assertions — only navegacion_auto_test.dart matches, confirmed
• 4.3 [DEVIATION] flutter build/run/analyze/gen-l10n NOT run (hangs in this environment, same precedent as prior change). Manual static review performed instead.

Phase 5: Cleanup

• 5.1 [REFACTOR] Doc comments added referencing ADR-1/2/3/5 on all new public/free-function members; suite confirmed green after
• 5.2 Active-preset indication — confirmed out of scope per ADR-6, no code added (tracking-only task)

Files Changed

File	Action	What Was Done
lib/servicios/navegacion_auto.dart	Modified	Added _prefijoPresetEq const, esPresetMediaId, ConstructorArbolAuto.idEcualizador, raiz() now returns 4 folders (Ecualizador last), itemPresetEq, presetsEq, free functions resolverPresetEq, debeAplicarPrincipalAhora, aplicarPresetPorMediaId
lib/servicios/servicio_audio.dart	Modified	getChildren gains idEcualizador branch (before fuente guard); playFromMediaId restructured — single outer try/catch, eq_preset: branch first with unconditional return; added servicio_ecualizador.dart import
test/servicios/navegacion_auto_test.dart	Modified	Updated raiz test to hasLength(4); added groups for esPresetMediaId, itemPresetEq, presetsEq, resolverPresetEq, debeAplicarPrincipalAhora, aplicarPresetPorMediaId (4 tests including structural non-playback invariant)

TDD Cycle Evidence

Task	Test File	Layer	Safety Net	RED	GREEN	TRIANGULATE	REFACTOR
1.1/1.2	navegacion_auto_test.dart	Unit	✅ 34/34 (pre-existing baseline)	✅ Written	✅ Passed	✅ 5 cases (table)	➖ None needed
1.3/1.4	navegacion_auto_test.dart	Unit	✅ (same file)	✅ Written	✅ Passed	➖ Single (fixed 4-folder shape)	➖ None needed
1.5/1.6	navegacion_auto_test.dart	Unit	✅ (same file)	✅ Written	✅ Passed	➖ Single	➖ None needed
1.7/1.8	navegacion_auto_test.dart	Unit	✅ (same file)	✅ Written	✅ Passed	✅ 6 presets iterated	➖ None needed
2.1/2.2	navegacion_auto_test.dart	Unit	✅ (same file)	✅ Written	✅ Passed	✅ 3 negative cases + 1 positive	➖ None needed
2.3/2.4	navegacion_auto_test.dart	Unit	✅ (same file)	✅ Written	✅ Passed	✅ 3 cases (null/no-override/override)	➖ None needed
2.5-2.8	navegacion_auto_test.dart	Unit	✅ (same file)	✅ Written	✅ Passed	✅ 4 tests (gate-true, gate-false, unknown-id, structural)	✅ Clean (extracted gate + resolve as separate pure fns)
3.1-3.3	N/A (dispatch layer, zero coverage precedent per design baseline)	N/A	N/A (new branch in untested method)	N/A	N/A — manual review only, standard workflow per design's documented precedent	N/A	➖ None needed
5.1	navegacion_auto_test.dart	Unit	✅ 46/46 (post-implementation)	N/A (doc-only)	✅ Suite still green	N/A	✅ Doc comments added

Note on Phase 3: servicio_audio.dart's getChildren/playFromMediaId dispatch layer has zero existing test coverage (confirmed in tasks.md baseline — no test/servicios/servicio_audio_test.dart exists). This is a pre-existing condition, not something introduced here; the design explicitly names the pure navegacion_auto.dart functions as the load-bearing tested layer (ADR-3), with the handler wiring as thin, structurally-safe delegation. No RED/GREEN test cycle applies to Phase 3 tasks — they are direct wiring edits verified by (a) the full Phase 1-2 pure-function suite staying green, and (b) manual static review per task 4.3.

Test Summary

• Total tests written: 15 new test cases (1 esPresetMediaId table [5 sub-cases], 1 itemPresetEq, 1 presetsEq, 2 resolverPresetEq, 3 debeAplicarPrincipalAhora, 4 aplicarPresetPorMediaId, plus the updated raiz test)
• Total tests passing: 46/46 in test/servicios/navegacion_auto_test.dart (34 pre-existing baseline + 12 new test blocks, some containing multiple sub-assertions/table cases) — independently re-confirmed via two separate flutter test invocations (default and --reporter=compact)
• Layers used: Unit (46), Integration (0), E2E (0)
• Approval tests (refactoring): None — no refactoring tasks; Phase 5.1 was pure doc-comment addition, verified via the full suite staying green
• Pure functions created: 4 (esPresetMediaId, resolverPresetEq, debeAplicarPrincipalAhora, plus itemPresetEq/presetsEq as pure builders) — aplicarPresetPorMediaId is an orchestrator with injected seams, not fully pure, by design (ADR-3)

Deviations from Design

1. servicio_ecualizador.dart import added to servicio_audio.dart — not explicitly listed in task 3.3 (which only mentions verifying the preset_ecualizador.dart import), but required to instantiate ServicioEcualizador() per the design's data-flow pseudocode. This is a direct, unavoidable consequence of implementing 3.2 as specified — not a deviation from the design's intent, just an omission in the task's explicit file-diff enumeration.
2. playFromMediaId restructured to a single outer try/catch (was: fuente-null guard outside try/catch, reproducirPorMediaId call inside try/catch). This was required because the design mandates the eq_preset: branch run BEFORE the fuente-null guard while still being covered by exception safety (Spec "Unknown or stale preset id": no unhandled exception may propagate). Functionally equivalent for the pre-existing emisora:/grupo: path — behavior for those ids is unchanged (the fuente == null check remains, just now inside the try block, and its return behavior on null is unaffected).

No other deviations — implementation matches design (ADR-1 through ADR-6 all satisfied as specified).

Issues Found

None.

Workload / PR Boundary

• Mode: single PR (no chaining needed — actual diff came in at 339 insertions + 7 deletions = 346 changed lines, within the 300-420 forecast and under the 400-line budget)
• Current work unit: N/A — single delivery, all tasks in one pass
• Boundary: Starts from a clean baseline (34/34 pre-existing tests green) and ends with the full Ecualizador folder + preset-selection feature wired end-to-end, 46/46 tests green
• Estimated review budget impact: Medium-low — under the 400-line reviewer budget; changes are additive (new branches alongside existing emisora:/grupo: dispatch, no restructuring of unrelated logic)

Status

21/21 tasks complete. Ready for sdd-verify.