Music Shake 첫 박 시각 · 카운트다운 · 옛 일시 정지 판 정리

app/test/music_shake_play_test.dart

@@ -19,6 +19,36 @@ void main() {
     segments: 3,
   );
 
+  test('첫 박 · 판 길이가 바뀐 뒤의 옛 일시 정지는 이어하지 않는다 (10/6 대표 지적)', () {
+    const fresh = MusicShakeSetup(
+      videoId: 'v', title: 't', bpm: 114, segments: 368,
+      firstBeat: Duration(milliseconds: 24276),
+    );
+    // 첫 박 도입 전(32박, 첫 박 0)에 저장된 판.
+    const old = QuestSession(state: QuestStage.paused, progress: 19, total: 32);
+    expect(old.fitsShake(fresh), isFalse);
+    const same = QuestSession(
+      state: QuestStage.paused, progress: 19, total: 368,
+      firstBeat: Duration(milliseconds: 24276),
+    );
+    expect(same.fitsShake(fresh), isTrue);
+  });
+
+  test('새 판은 첫 박 leadIn 전부터 틀고, 첫 박이 더 이르면 0 이다 (10/6 B안)', () {
+    const s = MusicShakeSetup(
+      videoId: 'v', title: 't', bpm: 114, segments: 368,
+      firstBeat: Duration(milliseconds: 24276),
+    );
+    expect(s.startAt, const Duration(milliseconds: 21276));
+    expect(
+      const MusicShakeSetup(
+        videoId: 'v', title: 't', bpm: 60, segments: 3,
+        firstBeat: Duration(seconds: 2),
+      ).startAt,
+      Duration.zero,
+    );
+  });
+
   testWidgets('재생 중 흔들기만 영상 시각으로 판정 · 끝나면 판정표를 돌려준다', (tester) async {
     final shakes = StreamController<DateTime>();
     addTearDown(shakes.close);
@@ -35,6 +65,7 @@ void main() {
                   MaterialPageRoute(
                     builder: (_) => MusicShakePlayScreen(
                       setup: setup,
+                      countdown: Duration.zero,
                       shakes: shakes.stream,
                       player: (onEvent) {
                         player = onEvent;
@@ -141,6 +172,7 @@ void main() {
               MaterialPageRoute(
                 builder: (_) => MusicShakePlayScreen(
                   setup: setup,
+                  countdown: Duration.zero,
                   shakes: shakes.stream,
                   judge: judge,
                   player: (onEvent) {
@@ -181,4 +213,48 @@ void main() {
     expect(resume, contains('player.seekTo(9.91,true);player.playVideo();'));
     expect(YoutubeEmbed.html('vid'), isNot(contains('playVideo')));
   });
+
+  testWidgets('재생을 시작하면 3·2·1 을 세는 동안 판정하지 않고, 0 이 되면 판정이 시작된다', (tester) async {
+    final shakes = StreamController<DateTime>();
+    addTearDown(shakes.close);
+    late ValueChanged<ShakePlayerEvent> player;
+    final judge = ShakeJudge(bpm: 60, segments: 3);
+    await tester.pumpWidget(
+      MaterialApp(
+        theme: buildAppTheme(),
+        home: MusicShakePlayScreen(
+          setup: setup,
+          countdown: const Duration(milliseconds: 500), // 화면은 단말 시계로 센다
+          shakes: shakes.stream,
+          judge: judge,
+          player: (onEvent) {
+            player = onEvent;
+            return const SizedBox();
+          },
+        ),
+      ),
+    );
+    player((playing: true, position: Duration.zero, ended: false));
+    await tester.pump(const Duration(milliseconds: 60));
+    expect(find.text('1'), findsOneWidget);
+    shakes.add(DateTime.now()); // 세는 동안의 흔들기는 세지 않는다.
+    await tester.runAsync(() => Future<void>.delayed(const Duration(milliseconds: 700)));
+    await tester.pump(const Duration(milliseconds: 60));
+    await tester.pump(const Duration(milliseconds: 60));
+    expect(find.text('1'), findsNothing);
+    player((playing: true, position: Duration.zero, ended: false));
+    shakes.add(DateTime.now());
+    await tester.pump(const Duration(milliseconds: 60));
+    expect(judge.hits[0], inInclusiveRange(0, 0.01));
+    await tester.pumpWidget(const SizedBox());
+  });
+
+  test('박은 firstBeat 부터 — 인트로의 흔들기는 박이 아니다', () {
+    final j = ShakeJudge(bpm: 60, segments: 2, firstBeat: const Duration(seconds: 17))
+      ..add(const Duration(seconds: 1))
+      ..add(const Duration(seconds: 17))
+      ..add(const Duration(milliseconds: 18300));
+    expect(j.end, const Duration(milliseconds: 18500));
+    expect(j.judgement(), {'perfect': 1, 'good': 1, 'miss': 0, 'maxCombo': 2});
+  });
 }