| // Copyright 2015 The Chromium 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 'package:flutter_test/flutter_test.dart'; |
| import 'package:flutter/rendering.dart'; |
| import 'package:flutter/widgets.dart'; |
| |
| import 'test_widgets.dart'; |
| |
| void main() { |
| testWidgets('Stateful widget smoke test', (WidgetTester tester) async { |
| |
| void checkTree(BoxDecoration expectedDecoration) { |
| final SingleChildRenderObjectElement element = tester.element( |
| find.byElementPredicate((Element element) => element is SingleChildRenderObjectElement) |
| ); |
| expect(element, isNotNull); |
| expect(element.renderObject is RenderDecoratedBox, isTrue); |
| final RenderDecoratedBox renderObject = element.renderObject; |
| expect(renderObject.decoration, equals(expectedDecoration)); |
| } |
| |
| await tester.pumpWidget( |
| const FlipWidget( |
| left: const DecoratedBox(decoration: kBoxDecorationA), |
| right: const DecoratedBox(decoration: kBoxDecorationB) |
| ) |
| ); |
| |
| checkTree(kBoxDecorationA); |
| |
| await tester.pumpWidget( |
| const FlipWidget( |
| left: const DecoratedBox(decoration: kBoxDecorationB), |
| right: const DecoratedBox(decoration: kBoxDecorationA) |
| ) |
| ); |
| |
| checkTree(kBoxDecorationB); |
| |
| flipStatefulWidget(tester); |
| |
| await tester.pump(); |
| |
| checkTree(kBoxDecorationA); |
| |
| await tester.pumpWidget( |
| const FlipWidget( |
| left: const DecoratedBox(decoration: kBoxDecorationA), |
| right: const DecoratedBox(decoration: kBoxDecorationB) |
| ) |
| ); |
| |
| checkTree(kBoxDecorationB); |
| }); |
| |
| testWidgets('Don\'t rebuild subwidgets', (WidgetTester tester) async { |
| await tester.pumpWidget( |
| new FlipWidget( |
| key: const Key('rebuild test'), |
| left: new TestBuildCounter(), |
| right: const DecoratedBox(decoration: kBoxDecorationB) |
| ) |
| ); |
| |
| expect(TestBuildCounter.buildCount, equals(1)); |
| |
| flipStatefulWidget(tester); |
| |
| await tester.pump(); |
| |
| expect(TestBuildCounter.buildCount, equals(1)); |
| }); |
| } |