Initial commit

test/providers/player_engine_override_provider_test.dart

@@ -0,0 +1,62 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:smplayer/providers/player_engine_override_provider.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  const key = 'smplayer.player_engine_override';
+
+  ProviderContainer makeContainer() {
+    final c = ProviderContainer();
+    addTearDown(c.dispose);
+    return c;
+  }
+
+  test('默认（无持久化值）build 返回 auto', () async {
+    SharedPreferences.setMockInitialValues({});
+    final c = makeContainer();
+    final value = await c.read(playerEngineOverrideProvider.future);
+    expect(value, PlayerEngineOverride.auto);
+  });
+
+  test('setOverride(media3) 后 build 返回 media3 且持久化为 name', () async {
+    SharedPreferences.setMockInitialValues({});
+    final c = makeContainer();
+    await c.read(playerEngineOverrideProvider.future);
+
+    await c
+        .read(playerEngineOverrideProvider.notifier)
+        .setOverride(PlayerEngineOverride.media3);
+
+    expect(
+      c.read(playerEngineOverrideProvider).value,
+      PlayerEngineOverride.media3,
+    );
+    final prefs = await SharedPreferences.getInstance();
+    expect(prefs.getString(key), 'media3');
+  });
+
+  test('持久化值为 media3 时 build 读回 media3', () async {
+    SharedPreferences.setMockInitialValues({key: 'media3'});
+    final c = makeContainer();
+    final value = await c.read(playerEngineOverrideProvider.future);
+    expect(value, PlayerEngineOverride.media3);
+  });
+
+  test('损坏字符串容错返回 auto', () async {
+    SharedPreferences.setMockInitialValues({key: 'garbage-value'});
+    final c = makeContainer();
+    final value = await c.read(playerEngineOverrideProvider.future);
+    expect(value, PlayerEngineOverride.auto);
+  });
+
+  test('byName(media3) 不抛', () {
+    expect(() => PlayerEngineOverride.values.byName('media3'), returnsNormally);
+    expect(
+      PlayerEngineOverride.values.byName('media3'),
+      PlayerEngineOverride.media3,
+    );
+  });
+}