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36 lines
1.1 KiB
Dart
36 lines
1.1 KiB
Dart
// Copyright 2018 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter_web/foundation.dart';
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import 'package:flutter_web/widgets.dart';
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import 'package:flutter_web_test/flutter_web_test.dart';
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void main() {
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testWidgets('FadeTransition', (WidgetTester tester) async {
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final DebugPrintCallback oldPrint = debugPrint;
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final List<String> log = <String>[];
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debugPrint = (String message, {int wrapWidth}) {
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log.add(message);
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};
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debugPrintBuildScope = true;
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final AnimationController controller = AnimationController(
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vsync: const TestVSync(),
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duration: const Duration(seconds: 2),
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);
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await tester.pumpWidget(FadeTransition(
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opacity: controller,
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child: const Placeholder(),
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));
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expect(log, hasLength(2));
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expect(log.last, 'buildScope finished');
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await tester.pump();
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expect(log, hasLength(2));
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controller.forward();
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await tester.pumpAndSettle();
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expect(log, hasLength(2));
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debugPrint = oldPrint;
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debugPrintBuildScope = false;
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});
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}
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