A coding agent could develop this repo's Go packages and could not develop the application: every path to running YellowJacket ended in a blocking GTK window, so 265 bound methods, 46 events, 33 component directories and 13 stores had exactly one form of verification available — `tsc --noEmit`. The unlock is that `wails dev`'s dev server on :34115 serves the real frontend with the real generated bindings against the same Go backend a desktop window attaches to, so a plain Chromium under Xvfb gets a fully functional app. Four test tiers now exist, cheapest first: - `make ui-test` — 313 Vitest tests in a real browser in ~2 s, no app, no backend, no display. Works because `frontend/wailsjs/` is a pure passthrough to `window.go`/`window.runtime`, so faking just those two globals runs the real bindings and the real store code. - `make test` — services in-process, asserting on the payload the frontend would receive, via a new `events.Emit` wrapper. - `make dev-headless` + `playwright-cli` — the real app, driven interactively, with an event bridge on `window.__yjEvents` and a dev-only control surface at `/__test/`. - `make e2e` — 19 of those flows frozen as Playwright specs. `events.Emit(ctx, …)` replaces all 35 direct `runtime.EventsEmit` call sites: wails' `getEvents` `log.Fatalf`s on any context without its runtime, so those paths could not run under test and a background worker could take the app down. Four packages had each hand-rolled the same guard; nine more guarded on `ctx != nil`, which does not help. `TestNoDirectRuntimeEmits` fails the build on a new one. Fixtures are generated, not committed (`make testdata`), and seeds are built by *running the app* — never by hand-writing config and DB rows, which would be a second description of a valid YJ_HOME. `.gitea/workflows/ci.yml` is the first workflow here that tests anything; the other three only package, so `gitea_ci` reported only packaging jobs and misled anyone asking whether a push was healthy. Both jobs were prototyped to green in a bare ubuntu:24.04 container before the YAML was written, which immediately caught `make lint` linting three configurations that nothing builds: all three passes omitted `webkit2_41`, so wails resolved webkit2gtk-4.0 — which Arch still ships and Ubuntu 24.04 dropped. Operational instructions live in `.pi/skills/yellowjacket-dev/`, measured discoveries in `.planning/NOTES.md`, and architecture in `CLAUDE.md` — split by tense, not by topic, because a topical split gives every new fact two plausible homes. `make skill-check` fails a commit if the skill cites a make target that does not exist.
2.8 KiB
The fixture library
test_data/music_library_test/ is generated, not committed:
make testdata (~1 s) builds 31 deterministic tracks across MP3, FLAC,
Ogg Vorbis and WAV. make testdata-force rebuilds unconditionally,
make testdata-clean deletes it. make test and make sandbox-seed
depend on it, so it is rarely run by hand.
Tests that need it fetch it through internal/testfixtures and skip
themselves when it has not been generated.
Select by case, never by path
m := testfixtures.Load(t)
paths := m.Case(t, testfixtures.CaseCoverDedup)
track := m.Track(t, rel)
Cases: cover-dedup, multi-disc, various-artists, flac-album,
ogg-album, wav-tracks, partial-tags, unicode, duplicates,
edge-lengths, broken.
Two invariants worth not breaking:
- The clean library is exactly 31 tracks, because
sandbox-seedverifies the scan against that count. Deliberately malformed files live in a sibling root,test_data/music_library_broken/(m.BrokenPath()), so the scanner never sees them. - Tags are written by
backend/tagwriter, not by ffmpeg (which encodes with-map_metadata -1). Fixture and reader therefore cannot drift into agreeing with each other and disagreeing with reality.
The manifest (test_data/music_library_test.manifest.json, outside the
scanned root) hashes the spec — paths, formats, durations, tags,
cover identity — not the bytes, because ffmpeg stamps encoder version
strings and identical specs produce different bytes on different builds.
In e2e specs
- Every fixture except one is 2–6 seconds. A spec that starts
playback and then clicks pause races the track ending and fails
against a correct UI. Use
LONG_TRACK(90 s,edge-lengths) exported frome2e/support/fixtures.ts. - WAV tracks scan in untitled.
backend/tagwriterwrites WAV tags into a RIFFid3chunk anddhowden/taghas no RIFF parser, so there is no "Field Recordings" artist in the Artists view. This is a known open bug pinned byTestWAVTagsAreNotReadableYet; do not "fix" a spec by asserting the broken behaviour elsewhere.
Seeds
make sandbox-seed NAME=default # build (boots a fresh YJ_HOME and drives the app)
make sandbox-seeds # list
make dev-headless SEED=default # restore into a run
A seed is a tarred YJ_HOME produced by running the app: fresh home →
real AddLibrary binding → poll until the real scan reports the
manifest's track count → SIGTERM so shutdown hooks persist state → tar.
Never hand-write one. Seeding points YJ_CORE_INDEX_URL at a dead
address on purpose, so no seed depends on what the explore artifact
server happened to be serving.
Rebuild a seed after any schema change, or the restored database is migrated on open in a way the seed's author never saw.