generation-aware playlist readiness

2026-09-01 20:05:00 +03:00
parent b160e3aba2
commit 532e03ffca
4 changed files with 349 additions and 0 deletions
@@ -153,3 +153,69 @@ func TestStatusStoreKeepsEqualGenerationUnitsIndependent(t *testing.T) {
 		t.Fatalf("audio Snapshot() = %#v, %t", got, ok)
 	}
 }
+
+func TestStatusStoreSnapshotAll(t *testing.T) {
+	store := NewStatusStore()
+	wantVideo := Status{Unit: UnitVideo, State: StatePlaying, Generation: 5}
+	wantAudio := Status{Unit: UnitAudio, State: StateReconnecting, Generation: 5}
+	store.Observe(wantVideo)
+	store.Observe(wantAudio)
+
+	got := store.SnapshotAll()
+	if got.Generation != 5 {
+		t.Fatalf("SnapshotAll() generation = %d, want 5", got.Generation)
+	}
+	if !got.HasVideo || got.Video != wantVideo {
+		t.Fatalf("SnapshotAll() video = %#v, %v; want %#v, true", got.Video, got.HasVideo, wantVideo)
+	}
+	if !got.HasAudio || got.Audio != wantAudio {
+		t.Fatalf("SnapshotAll() audio = %#v, %v; want %#v, true", got.Audio, got.HasAudio, wantAudio)
+	}
+	if got.HasSync {
+		t.Fatalf("SnapshotAll() HasSync = true, want false")
+	}
+}
+
+func TestStatusStoreSnapshotAllClearsOldGenerationUnits(t *testing.T) {
+	store := NewStatusStore()
+	store.Observe(Status{Unit: UnitVideo, State: StatePlaying, Generation: 2})
+	store.Observe(Status{Unit: UnitAudio, State: StatePlaying, Generation: 2})
+	wantSync := Status{Unit: UnitSync, State: StateConnecting, Generation: 3}
+	store.Observe(wantSync)
+
+	got := store.SnapshotAll()
+	if got.Generation != 3 {
+		t.Fatalf("SnapshotAll() generation = %d, want 3", got.Generation)
+	}
+	if got.HasVideo || got.HasAudio {
+		t.Fatalf("SnapshotAll() retained old units: %#v", got)
+	}
+	if !got.HasSync || got.Sync != wantSync {
+		t.Fatalf("SnapshotAll() sync = %#v, %v; want %#v, true", got.Sync, got.HasSync, wantSync)
+	}
+}
+
+func TestStatusStoreSnapshotAllConcurrentObserve(t *testing.T) {
+	store := NewStatusStore()
+	done := make(chan struct{})
+	go func() {
+		defer close(done)
+		for generation := uint64(1); generation <= 1000; generation++ {
+			store.Observe(Status{
+				Unit:       Unit(generation % 3),
+				State:      StatePlaying,
+				Generation: generation,
+			})
+		}
+	}()
+
+	for {
+		select {
+		case <-done:
+			_ = store.SnapshotAll()
+			return
+		default:
+			_ = store.SnapshotAll()
+		}
+	}
+}