lib/web_ui/test/golden_tests/golden_success_smoke_test.dart

// 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:html' as html;

import 'package:test/bootstrap/browser.dart';
import 'package:test/test.dart';
import 'package:ui/src/engine.dart';
import 'package:ui/ui.dart';
import 'package:web_engine_tester/golden_tester.dart';

void main() {
  internalBootstrapBrowserTest(() => testMain);
}

Future<void> testMain() async {
  debugEmulateFlutterTesterEnvironment = true;
  await webOnlyInitializePlatform(assetManager: WebOnlyMockAssetManager());

  test('screenshot test reports success', () async {
    html.document.body!.style.fontFamily = 'Roboto';
    html.document.body!.innerHtml = 'Hello world!';
    // TODO: https://github.com/flutter/flutter/issues/74702 , reduce webkit percentage.
    await matchGoldenFile('__local__/smoke_test.png', region: const Rect.fromLTWH(0, 0, 320, 200),
      maxDiffRatePercent: browserEngine == BrowserEngine.webkit ? 3.0 : 0.28);
  });
}