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// Copyright 2014 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 'package:flutter/widgets.dart';
import 'package:flutter_test/flutter_test.dart';
class TestStatusTransitionWidget extends StatusTransitionWidget {
const TestStatusTransitionWidget({
Key? key,
required this.builder,
required Animation<double> animation,
}) : super(key: key, animation: animation);
final WidgetBuilder builder;
@override
Widget build(BuildContext context) => builder(context);
}
void main() {
testWidgets('Status transition control test', (WidgetTester tester) async {
bool didBuild = false;
final AnimationController controller = AnimationController(
duration: const Duration(seconds: 1),
vsync: const TestVSync(),
);
await tester.pumpWidget(TestStatusTransitionWidget(
animation: controller,
builder: (BuildContext context) {
expect(didBuild, isFalse);
didBuild = true;
return Container();
},
));
expect(didBuild, isTrue);
didBuild = false;
controller.forward();
expect(didBuild, isFalse);
await tester.pump();
expect(didBuild, isTrue);
didBuild = false;
await tester.pump(const Duration(milliseconds: 100));
expect(didBuild, isFalse);
await tester.pump(const Duration(milliseconds: 850));
expect(didBuild, isFalse);
await tester.pump(const Duration(milliseconds: 100));
expect(didBuild, isTrue);
didBuild = false;
controller.forward();
await tester.pump(const Duration(milliseconds: 100));
expect(didBuild, isFalse);
controller.stop();
await tester.pump(const Duration(milliseconds: 100));
expect(didBuild, isFalse);
final AnimationController anotherController = AnimationController(
duration: const Duration(seconds: 1),
vsync: const TestVSync(),
);
await tester.pumpWidget(TestStatusTransitionWidget(
animation: anotherController,
builder: (BuildContext context) {
expect(didBuild, isFalse);
didBuild = true;
return Container();
},
));
expect(didBuild, isTrue);
didBuild = false;
controller.reverse();
await tester.pump(const Duration(milliseconds: 100));
expect(didBuild, isFalse);
anotherController.forward();
await tester.pump(const Duration(milliseconds: 100));
expect(didBuild, isTrue);
didBuild = false;
controller.stop();
anotherController.stop();
});
}