[verified] Publish ReelBox source under GPLv3

test/playback_checkpoint_test.dart

@@ -0,0 +1,47 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:reelbox/media/media_helpers.dart';
+
+void main() {
+  test('opening a player cannot overwrite an existing resume checkpoint', () {
+    final playback = PlaybackCheckpoint();
+    const savedPosition = Duration(minutes: 17);
+    var storedPosition = savedPosition;
+    void persist() {
+      if (playback.canPersist) storedPosition = playback.position;
+    }
+
+    persist();
+    playback.beginOpen();
+    persist();
+    expect(storedPosition, savedPosition);
+    expect(playback.canPersist, isFalse);
+    // Failed opens, duration discovery and a zero position are not watched time.
+    playback.duration = const Duration(hours: 2);
+    playback.position = Duration.zero;
+    persist();
+    expect(storedPosition, savedPosition);
+    playback.didOpen();
+    persist();
+    expect(storedPosition, savedPosition);
+    playback.position = const Duration(minutes: 18);
+    persist();
+    expect(storedPosition, const Duration(minutes: 18));
+  });
+  test(
+    'source switches do not attribute previous progress to the new source',
+    () {
+      final playback = PlaybackCheckpoint();
+      playback.beginOpen();
+      playback.didOpen();
+      playback.position = const Duration(minutes: 3);
+      expect(playback.canPersist, isTrue);
+      playback.beginOpen();
+      expect(playback.position, Duration.zero);
+      expect(playback.canPersist, isFalse);
+      playback.position = const Duration(seconds: 40);
+      expect(playback.canPersist, isFalse);
+      playback.didOpen();
+      expect(playback.canPersist, isTrue);
+    },
+  );
+}