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72 lines
2.8 KiB
Dart
72 lines
2.8 KiB
Dart
// Copyright 2014 The Flutter 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/material.dart';
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import 'package:flutter_api_samples/widgets/heroes/hero.0.dart' as example;
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import 'package:flutter_test/flutter_test.dart';
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void main() {
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testWidgets('Has Hero animation', (WidgetTester tester) async {
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await tester.pumpWidget(
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const example.HeroApp(),
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);
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expect(find.text('Hero Sample'), findsOneWidget);
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await tester.tap(find.byType(Container));
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await tester.pump();
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Size heroSize = tester.getSize(find.byType(Container));
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// Jump 25% into the transition (total length = 300ms)
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await tester.pump(const Duration(milliseconds: 75)); // 25% of 300ms
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heroSize = tester.getSize(find.byType(Container));
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expect(heroSize.width.roundToDouble(), 103.0);
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expect(heroSize.height.roundToDouble(), 60.0);
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// Jump to 50% into the transition.
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await tester.pump(const Duration(milliseconds: 75)); // 25% of 300ms
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heroSize = tester.getSize(find.byType(Container));
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expect(heroSize.width.roundToDouble(), 189.0);
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expect(heroSize.height.roundToDouble(), 146.0);
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// Jump to 75% into the transition.
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await tester.pump(const Duration(milliseconds: 75)); // 25% of 300ms
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heroSize = tester.getSize(find.byType(Container));
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expect(heroSize.width.roundToDouble(), 199.0);
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expect(heroSize.height.roundToDouble(), 190.0);
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// Jump to 100% into the transition.
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await tester.pump(const Duration(milliseconds: 75)); // 25% of 300ms
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heroSize = tester.getSize(find.byType(Container));
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expect(heroSize, const Size(200.0, 200.0));
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expect(find.byIcon(Icons.arrow_back), findsOneWidget);
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await tester.tap(find.byIcon(Icons.arrow_back));
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await tester.pump();
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// Jump 25% into the transition (total length = 300ms)
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await tester.pump(const Duration(milliseconds: 75)); // 25% of 300ms
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heroSize = tester.getSize(find.byType(Container));
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expect(heroSize.width.roundToDouble(), 199.0);
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expect(heroSize.height.roundToDouble(), 190.0);
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// Jump to 50% into the transition.
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await tester.pump(const Duration(milliseconds: 75)); // 25% of 300ms
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heroSize = tester.getSize(find.byType(Container));
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expect(heroSize.width.roundToDouble(), 189.0);
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expect(heroSize.height.roundToDouble(), 146.0);
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// Jump to 75% into the transition.
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await tester.pump(const Duration(milliseconds: 75)); // 25% of 300ms
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heroSize = tester.getSize(find.byType(Container));
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expect(heroSize.width.roundToDouble(), 103.0);
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expect(heroSize.height.roundToDouble(), 60.0);
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// Jump to 100% into the transition.
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await tester.pump(const Duration(milliseconds: 75)); // 25% of 300ms
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heroSize = tester.getSize(find.byType(Container));
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expect(heroSize, const Size(50.0, 50.0));
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});
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}
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