[ios_platform_images] Add integration tests

packages/ios_platform_images/example/integration_test/ios_platform_images_test.dart

@@ -0,0 +1,35 @@
+// Copyright 2013 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:flutter/widgets.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:integration_test/integration_test.dart';
+import 'package:ios_platform_images/ios_platform_images.dart';
+
+void main() {
+  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+
+  testWidgets('resolves URL', (WidgetTester _) async {
+    final String? path = await IosPlatformImages.resolveURL('textfile');
+    expect(Uri.parse(path!).scheme, 'file');
+    expect(path.contains('Runner.app'), isTrue);
+  });
+
+  testWidgets('loads image', (WidgetTester _) async {
+    final Completer<bool> successCompleter = Completer<bool>();
+    final ImageProvider<Object> provider = IosPlatformImages.load('flutter');
+    final ImageStream imageStream = provider.resolve(ImageConfiguration.empty);
+    imageStream.addListener(
+        ImageStreamListener((ImageInfo image, bool synchronousCall) {
+      successCompleter.complete(true);
+    }, onError: (Object e, StackTrace? _) {
+      successCompleter.complete(false);
+    }));
+
+    final bool succeeded = await successCompleter.future;
+    expect(succeeded, true);
+  });
+}

packages/ios_platform_images/example/pubspec.yaml

@@ -21,6 +21,8 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
+  integration_test:
+    sdk: flutter
 
 flutter:
   uses-material-design: true