[verified] Publish ReelBox source under GPLv3

test/api_request_efficiency_test.dart

@@ -0,0 +1,46 @@
+import 'dart:async';
+
+import 'package:dio/dio.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:reelbox/data/api_service.dart';
+
+import 'api_service_test.dart' show StubAdapter, jsonBody;
+
+void main() {
+  test('reopening genre and country menus reuses only those successful lists', () async {
+    final adapter = StubAdapter((_) => jsonBody([{'id': 1, 'title': 'Tag'}]));
+    final api = ApiService(dio: Dio()..httpClientAdapter = adapter,
+        baseUrl: 'http://localhost/api/');
+    final first = await api.genres();
+    first.clear();
+    for (var i = 0; i < 8; i++) {
+      expect((await api.genres()).single.id, 1);
+      expect((await api.countries()).single.id, 1);
+    }
+    expect(adapter.requests, hasLength(2));
+  });
+  test('concurrent identical metadata reads perform one transport operation', () async {
+    final gate = Completer<void>();
+    final entered = Completer<void>();
+    final adapter = StubAdapter((request) async {
+      if (!entered.isCompleted) entered.complete();
+      await gate.future;
+      return jsonBody({'id': 1, 'title': 'Film', 'nested': {'items': [1]}});
+    });
+    final api = ApiService(
+      dio: Dio()..httpClientAdapter = adapter,
+      baseUrl: 'http://localhost/api/',
+    );
+    final reads = List.generate(12, (_) => api.get('movie/by/1/public/'));
+    await entered.future;
+    // Drain dispatch microtasks while all response bodies remain gated.
+    await Future<void>.delayed(Duration.zero);
+    gate.complete();
+    final results = await Future.wait(reads);
+    expect(adapter.requests, hasLength(1));
+    results.first['nested']['items'].add(2);
+    expect(results.last['nested']['items'], [1]);
+    await api.get('movie/by/1/public/');
+    expect(adapter.requests, hasLength(2), reason: 'completed detail reads stay fresh');
+  });
+}