[verified] Publish ReelBox source under GPLv3

test/catalog_external_player_test.dart

@@ -0,0 +1,84 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:reelbox/data/models.dart';
+import 'package:reelbox/media/media_platform.dart';
+import 'package:reelbox/ui/catalog.dart';
+
+import 'catalog_widget_test.dart' show CatalogApi, mountCatalog;
+
+void main() {
+  testWidgets(
+    'source has a visible external-player button independent of preference',
+    (tester) async {
+      final calls = <MethodCall>[];
+      tester.binding.defaultBinaryMessenger.setMockMethodCallHandler(
+        MediaPlatform.channel,
+        (call) async {
+          calls.add(call);
+          return call.method == 'openExternal';
+        },
+      );
+      addTearDown(() {
+        tester.binding.defaultBinaryMessenger.setMockMethodCallHandler(
+          MediaPlatform.channel,
+          null,
+        );
+      });
+      final state = await mountCatalog(
+        tester,
+        CatalogApi(),
+        const TitlePage(title: TitleRecord(id: 7, title: 'Fixture')),
+      );
+      addTearDown(state.dispose);
+      expect(state.prefs.externalPlayer, false);
+      final button = find.widgetWithText(TextButton, 'External player').first;
+      await tester.ensureVisible(button);
+      await tester.tap(button);
+      await tester.pumpAndSettle();
+      final call = calls.singleWhere((call) => call.method == 'openExternal');
+      expect(call.arguments['url'], 'https://media.example/movie.mp4');
+      expect(call.arguments['packageName'], 'ask');
+      expect(state.prefs.externalPlayer, false);
+      expect(tester.takeException(), isNull);
+    },
+    variant: TargetPlatformVariant.only(TargetPlatform.android),
+  );
+
+  testWidgets(
+    'external-player failure is recoverable without opening an internal decoder',
+    (tester) async {
+      tester.binding.defaultBinaryMessenger.setMockMethodCallHandler(
+        MediaPlatform.channel,
+        (call) async {
+          if (call.method == 'openExternal') {
+            throw PlatformException(code: 'NO_PLAYER');
+          }
+          return null;
+        },
+      );
+      addTearDown(() {
+        tester.binding.defaultBinaryMessenger.setMockMethodCallHandler(
+          MediaPlatform.channel,
+          null,
+        );
+      });
+      final state = await mountCatalog(
+        tester,
+        CatalogApi(),
+        const TitlePage(title: TitleRecord(id: 7, title: 'Fixture')),
+      );
+      addTearDown(state.dispose);
+      final button = find.widgetWithText(TextButton, 'External player').first;
+      await tester.ensureVisible(button);
+      await tester.tap(button);
+      await tester.pump();
+      expect(
+        find.text('No external player could open this source.'),
+        findsOneWidget,
+      );
+      expect(tester.takeException(), isNull);
+    },
+    variant: TargetPlatformVariant.only(TargetPlatform.android),
+  );
+}