[verified] Publish ReelBox source under GPLv3

test/player_widget_test.dart

@@ -0,0 +1,30 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:reelbox/data/models.dart';
+import 'package:reelbox/media/player_page.dart';
+import 'package:reelbox/state/app_state.dart';
+
+void main() {
+  testWidgets(
+    'Untrusted source is rejected before initializing a native player',
+    (tester) async {
+      final state = AppState();
+      await tester.pumpWidget(
+        AppScope(
+          state: state,
+          child: const MaterialApp(
+            home: PlayerPage(
+              title: TitleRecord(id: 1, title: 'Invalid source'),
+              source: MediaSource(url: 'javascript:alert(1)'),
+            ),
+          ),
+        ),
+      );
+      await tester.pump();
+      expect(find.text('Unable to play this source'), findsOneWidget);
+      expect(find.text('Retry'), findsOneWidget);
+      await tester.pumpWidget(const SizedBox());
+      state.dispose();
+    },
+  );
+}