77 lines
2.1 KiB
Dart
77 lines
2.1 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/rendering.dart';
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import 'package:flutter/widgets.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'test_widgets.dart';
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void main() {
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testWidgets('Stateful widget smoke test', (WidgetTester tester) async {
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void checkTree(BoxDecoration expectedDecoration) {
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final SingleChildRenderObjectElement element = tester.element(
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find.byElementPredicate(
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(Element element) =>
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element is SingleChildRenderObjectElement && element.renderObject is! RenderView,
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),
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);
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expect(element, isNotNull);
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expect(element.renderObject, isA<RenderDecoratedBox>());
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final renderObject = element.renderObject as RenderDecoratedBox;
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expect(renderObject.decoration, equals(expectedDecoration));
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}
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await tester.pumpWidget(
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const FlipWidget(
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left: DecoratedBox(decoration: kBoxDecorationA),
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right: DecoratedBox(decoration: kBoxDecorationB),
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),
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);
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checkTree(kBoxDecorationA);
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await tester.pumpWidget(
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const FlipWidget(
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left: DecoratedBox(decoration: kBoxDecorationB),
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right: DecoratedBox(decoration: kBoxDecorationA),
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),
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);
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checkTree(kBoxDecorationB);
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flipStatefulWidget(tester);
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await tester.pump();
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checkTree(kBoxDecorationA);
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await tester.pumpWidget(
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const FlipWidget(
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left: DecoratedBox(decoration: kBoxDecorationA),
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right: DecoratedBox(decoration: kBoxDecorationB),
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),
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);
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checkTree(kBoxDecorationB);
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});
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testWidgets("Don't rebuild subwidgets", (WidgetTester tester) async {
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await tester.pumpWidget(
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const FlipWidget(
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key: Key('rebuild test'),
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left: TestBuildCounter(),
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right: DecoratedBox(decoration: kBoxDecorationB),
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),
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);
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expect(TestBuildCounter.buildCount, equals(1));
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flipStatefulWidget(tester);
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await tester.pump();
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expect(TestBuildCounter.buildCount, equals(1));
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});
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}
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