| // Copyright 2016 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/widgets.dart'; |
| import 'package:flutter_test/flutter_test.dart'; |
| |
| void main() { |
| group('findsOneWidget', () { |
| testWidgets('finds exactly one widget', (WidgetTester tester) async { |
| await tester.pumpWidget(const Text('foo')); |
| expect(find.text('foo'), findsOneWidget); |
| }); |
| |
| testWidgets('fails with a descriptive message', (WidgetTester tester) async { |
| TestFailure failure; |
| try { |
| expect(find.text('foo', skipOffstage: false), findsOneWidget); |
| } catch(e) { |
| failure = e; |
| } |
| |
| expect(failure, isNotNull); |
| final String message = failure.message; |
| expect(message, contains('Expected: exactly one matching node in the widget tree\n')); |
| expect(message, contains('Actual: ?:<zero widgets with text "foo">\n')); |
| expect(message, contains('Which: means none were found but one was expected\n')); |
| }); |
| }); |
| |
| group('findsNothing', () { |
| testWidgets('finds no widgets', (WidgetTester tester) async { |
| expect(find.text('foo'), findsNothing); |
| }); |
| |
| testWidgets('fails with a descriptive message', (WidgetTester tester) async { |
| await tester.pumpWidget(const Text('foo')); |
| |
| TestFailure failure; |
| try { |
| expect(find.text('foo', skipOffstage: false), findsNothing); |
| } catch(e) { |
| failure = e; |
| } |
| |
| expect(failure, isNotNull); |
| final String message = failure.message; |
| |
| expect(message, contains('Expected: no matching nodes in the widget tree\n')); |
| expect(message, contains('Actual: ?:<exactly one widget with text "foo": Text("foo")>\n')); |
| expect(message, contains('Which: means one was found but none were expected\n')); |
| }); |
| |
| testWidgets('fails with a descriptive message when skipping', (WidgetTester tester) async { |
| await tester.pumpWidget(const Text('foo')); |
| |
| TestFailure failure; |
| try { |
| expect(find.text('foo'), findsNothing); |
| } catch(e) { |
| failure = e; |
| } |
| |
| expect(failure, isNotNull); |
| final String message = failure.message; |
| |
| expect(message, contains('Expected: no matching nodes in the widget tree\n')); |
| expect(message, contains('Actual: ?:<exactly one widget with text "foo" (ignoring offstage widgets): Text("foo")>\n')); |
| expect(message, contains('Which: means one was found but none were expected\n')); |
| }); |
| |
| testWidgets('pumping', (WidgetTester tester) async { |
| await tester.pumpWidget(const Text('foo')); |
| int count; |
| |
| final AnimationController test = new AnimationController( |
| duration: const Duration(milliseconds: 5100), |
| vsync: tester, |
| ); |
| count = await tester.pumpAndSettle(const Duration(seconds: 1)); |
| expect(count, 1); // it always pumps at least one frame |
| |
| test.forward(from: 0.0); |
| count = await tester.pumpAndSettle(const Duration(seconds: 1)); |
| // 1 frame at t=0, starting the animation |
| // 1 frame at t=1 |
| // 1 frame at t=2 |
| // 1 frame at t=3 |
| // 1 frame at t=4 |
| // 1 frame at t=5 |
| // 1 frame at t=6, ending the animation |
| expect(count, 7); |
| |
| test.forward(from: 0.0); |
| await tester.pump(); // starts the animation |
| count = await tester.pumpAndSettle(const Duration(seconds: 1)); |
| expect(count, 6); |
| |
| test.forward(from: 0.0); |
| await tester.pump(); // starts the animation |
| await tester.pump(); // has no effect |
| count = await tester.pumpAndSettle(const Duration(seconds: 1)); |
| expect(count, 6); |
| }); |
| }); |
| |
| group('find.byElementPredicate', () { |
| testWidgets('fails with a custom description in the message', (WidgetTester tester) async { |
| await tester.pumpWidget(const Text('foo')); |
| |
| final String customDescription = 'custom description'; |
| TestFailure failure; |
| try { |
| expect(find.byElementPredicate((_) => false, description: customDescription), findsOneWidget); |
| } catch(e) { |
| failure = e; |
| } |
| |
| expect(failure, isNotNull); |
| expect(failure.message, contains('Actual: ?:<zero widgets with $customDescription')); |
| }); |
| }); |
| |
| group('find.byWidgetPredicate', () { |
| testWidgets('fails with a custom description in the message', (WidgetTester tester) async { |
| await tester.pumpWidget(const Text('foo')); |
| |
| final String customDescription = 'custom description'; |
| TestFailure failure; |
| try { |
| expect(find.byWidgetPredicate((_) => false, description: customDescription), findsOneWidget); |
| } catch(e) { |
| failure = e; |
| } |
| |
| expect(failure, isNotNull); |
| expect(failure.message, contains('Actual: ?:<zero widgets with $customDescription')); |
| }); |
| }); |
| |
| group('find.descendant', () { |
| testWidgets('finds one descendant', (WidgetTester tester) async { |
| await tester.pumpWidget(new Row(children: <Widget>[ |
| new Column(children: <Text>[const Text('foo'), const Text('bar')]) |
| ])); |
| |
| expect(find.descendant( |
| of: find.widgetWithText(Row, 'foo'), |
| matching: find.text('bar') |
| ), findsOneWidget); |
| }); |
| |
| testWidgets('finds two descendants with different ancestors', (WidgetTester tester) async { |
| await tester.pumpWidget(new Row(children: <Widget>[ |
| new Column(children: <Text>[const Text('foo'), const Text('bar')]), |
| new Column(children: <Text>[const Text('foo'), const Text('bar')]), |
| ])); |
| |
| expect(find.descendant( |
| of: find.widgetWithText(Column, 'foo'), |
| matching: find.text('bar') |
| ), findsNWidgets(2)); |
| }); |
| |
| testWidgets('fails with a descriptive message', (WidgetTester tester) async { |
| await tester.pumpWidget(new Row(children: <Widget>[ |
| new Column(children: <Text>[const Text('foo')]), |
| const Text('bar') |
| ])); |
| |
| TestFailure failure; |
| try { |
| expect(find.descendant( |
| of: find.widgetWithText(Column, 'foo'), |
| matching: find.text('bar') |
| ), findsOneWidget); |
| } catch (e) { |
| failure = e; |
| } |
| |
| expect(failure, isNotNull); |
| expect( |
| failure.message, |
| contains('Actual: ?:<zero widgets with text "bar" that has ancestor(s) with type Column with text "foo"') |
| ); |
| }); |
| |
| testWidgets('Root not matched by default', (WidgetTester tester) async { |
| await tester.pumpWidget(new Row(children: <Widget>[ |
| new Column(children: <Text>[const Text('foo'), const Text('bar')]) |
| ])); |
| |
| expect(find.descendant( |
| of: find.widgetWithText(Row, 'foo'), |
| matching: find.byType(Row), |
| ), findsNothing); |
| }); |
| |
| testWidgets('Match the root', (WidgetTester tester) async { |
| await tester.pumpWidget(new Row(children: <Widget>[ |
| new Column(children: <Text>[const Text('foo'), const Text('bar')]) |
| ])); |
| |
| expect(find.descendant( |
| of: find.widgetWithText(Row, 'foo'), |
| matching: find.byType(Row), |
| matchRoot: true, |
| ), findsOneWidget); |
| }); |
| |
| }); |
| |
| testWidgets('hasRunningAnimations control test', (WidgetTester tester) async { |
| final AnimationController controller = new AnimationController( |
| duration: const Duration(seconds: 1), |
| vsync: const TestVSync() |
| ); |
| expect(tester.hasRunningAnimations, isFalse); |
| controller.forward(); |
| expect(tester.hasRunningAnimations, isTrue); |
| controller.stop(); |
| expect(tester.hasRunningAnimations, isFalse); |
| controller.forward(); |
| expect(tester.hasRunningAnimations, isTrue); |
| await tester.pumpAndSettle(); |
| expect(tester.hasRunningAnimations, isFalse); |
| }); |
| |
| testWidgets('pumpAndSettle control test', (WidgetTester tester) async { |
| final AnimationController controller = new AnimationController( |
| duration: const Duration(minutes: 525600), |
| vsync: const TestVSync() |
| ); |
| expect(await tester.pumpAndSettle(), 1); |
| controller.forward(); |
| try { |
| await tester.pumpAndSettle(); |
| expect(true, isFalse); |
| } catch (e) { |
| expect(e, isFlutterError); |
| } |
| controller.stop(); |
| expect(await tester.pumpAndSettle(), 1); |
| controller.duration = const Duration(seconds: 1); |
| controller.forward(); |
| expect(await tester.pumpAndSettle(const Duration(milliseconds: 300)), 5); // 0, 300, 600, 900, 1200ms |
| }); |
| } |