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9e673853e5
This requires all AnimationController objects to be given a TickerProvider, a class that can create the Ticker. It also provides some nice mixins for people who want to have their State provide a TickerProvider. And a schedulerTickerProvider for those cases where you just want to see your battery burn. Also, we now enforce destruction order for elements.
108 lines
3.6 KiB
Dart
108 lines
3.6 KiB
Dart
// Copyright 2016 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/widgets.dart';
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import 'package:flutter_test/flutter_test.dart';
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void main() {
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group('findsOneWidget', () {
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testWidgets('finds exactly one widget', (WidgetTester tester) async {
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await tester.pumpWidget(new Text('foo'));
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expect(find.text('foo'), findsOneWidget);
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});
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testWidgets('fails with a descriptive message', (WidgetTester tester) async {
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TestFailure failure;
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try {
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expect(find.text('foo', skipOffstage: false), findsOneWidget);
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} catch(e) {
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failure = e;
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}
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expect(failure, isNotNull);
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String message = failure.message;
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expect(message, contains('Expected: exactly one matching node in the widget tree\n'));
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expect(message, contains('Actual: ?:<zero widgets with text "foo">\n'));
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expect(message, contains('Which: means none were found but one was expected\n'));
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});
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});
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group('findsNothing', () {
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testWidgets('finds no widgets', (WidgetTester tester) async {
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expect(find.text('foo'), findsNothing);
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});
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testWidgets('fails with a descriptive message', (WidgetTester tester) async {
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await tester.pumpWidget(new Text('foo'));
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TestFailure failure;
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try {
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expect(find.text('foo', skipOffstage: false), findsNothing);
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} catch(e) {
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failure = e;
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}
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expect(failure, isNotNull);
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String message = failure.message;
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expect(message, contains('Expected: no matching nodes in the widget tree\n'));
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expect(message, contains('Actual: ?:<exactly one widget with text "foo": Text("foo")>\n'));
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expect(message, contains('Which: means one was found but none were expected\n'));
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});
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testWidgets('fails with a descriptive message when skipping', (WidgetTester tester) async {
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await tester.pumpWidget(new Text('foo'));
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TestFailure failure;
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try {
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expect(find.text('foo'), findsNothing);
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} catch(e) {
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failure = e;
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}
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expect(failure, isNotNull);
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String message = failure.message;
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expect(message, contains('Expected: no matching nodes in the widget tree\n'));
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expect(message, contains('Actual: ?:<exactly one widget with text "foo" (ignoring offstage widgets): Text("foo")>\n'));
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expect(message, contains('Which: means one was found but none were expected\n'));
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});
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testWidgets('pumping', (WidgetTester tester) async {
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await tester.pumpWidget(new Text('foo'));
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int count;
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AnimationController test = new AnimationController(
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duration: const Duration(milliseconds: 5100),
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vsync: tester,
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);
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count = await tester.pumpUntilNoTransientCallbacks(const Duration(seconds: 1));
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expect(count, 0);
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test.forward(from: 0.0);
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count = await tester.pumpUntilNoTransientCallbacks(const Duration(seconds: 1));
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// 1 frame at t=0, starting the animation
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// 1 frame at t=1
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// 1 frame at t=2
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// 1 frame at t=3
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// 1 frame at t=4
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// 1 frame at t=5
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// 1 frame at t=6, ending the animation
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expect(count, 7);
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test.forward(from: 0.0);
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await tester.pump(); // starts the animation
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count = await tester.pumpUntilNoTransientCallbacks(const Duration(seconds: 1));
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expect(count, 6);
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test.forward(from: 0.0);
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await tester.pump(); // starts the animation
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await tester.pump(); // has no effect
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count = await tester.pumpUntilNoTransientCallbacks(const Duration(seconds: 1));
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expect(count, 6);
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});
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});
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}
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