iosWebViewFix/example/integration_test/in_app_webview/on_received_icon.dart

import 'dart:async';

import 'package:flutter/foundation.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter_inappwebview/flutter_inappwebview.dart';
import 'package:flutter_test/flutter_test.dart';

import '../constants.dart';

void onReceivedIcon() {
  final shouldSkip = kIsWeb
      ? true
      : ![
          TargetPlatform.android,
        ].contains(defaultTargetPlatform);

  testWidgets('onReceivedIcon', (WidgetTester tester) async {
    final Completer<InAppWebViewController> controllerCompleter =
        Completer<InAppWebViewController>();
    final Completer<void> pageLoaded = Completer<void>();
    final Completer<Uint8List> onReceivedIconCompleter = Completer<Uint8List>();

    await tester.pumpWidget(
      Directionality(
        textDirection: TextDirection.ltr,
        child: InAppWebView(
          key: GlobalKey(),
          initialUrlRequest: URLRequest(url: TEST_URL_1),
          onWebViewCreated: (controller) {
            controllerCompleter.complete(controller);
          },
          onLoadStop: (controller, url) {
            pageLoaded.complete();
          },
          onReceivedIcon: (controller, icon) {
            onReceivedIconCompleter.complete(icon);
          },
        ),
      ),
    );

    await pageLoaded.future;
    final Uint8List icon = await onReceivedIconCompleter.future;
    expect(icon, isNotNull);
  }, skip: shouldSkip);
}