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Add tests for actions.0.dart API example. (#148678)
This PR contributes to flutter/flutter#130459 ### Description - Updates `examples/api/lib/widgets/actions/actions.0.dart` to meet the latest API examples structure - Adds tests for `examples/api/lib/widgets/actions/actions.0.dart`
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,140 @@ | ||
| // 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/foundation.dart'; | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:flutter_api_samples/widgets/actions/actions.0.dart' as example; | ||
| import 'package:flutter_test/flutter_test.dart'; | ||
|
|
||
| void main() { | ||
| Color? getSaveButtonColor(WidgetTester tester) { | ||
| final ButtonStyleButton button = tester.widget<ButtonStyleButton>( | ||
| find.descendant( | ||
| of: find.byType(example.SaveButton), | ||
| matching: find.byWidgetPredicate( | ||
| (Widget widget) => widget is TextButton, | ||
| ), | ||
| ), | ||
| ); | ||
|
|
||
| return button.style?.foregroundColor?.resolve(<WidgetState>{}); | ||
| } | ||
|
|
||
| testWidgets('increments and decrements value', (WidgetTester tester) async { | ||
| await tester.pumpWidget( | ||
| const example.ActionsExampleApp(), | ||
| ); | ||
|
|
||
| int value = 0; | ||
|
|
||
| while (value < 10) { | ||
| expect(find.text('Value: $value'), findsOneWidget); | ||
|
|
||
| // Increment the value. | ||
| await tester.tap(find.byIcon(Icons.exposure_plus_1)); | ||
| await tester.pump(); | ||
|
|
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| value++; | ||
| } | ||
|
|
||
| while (value >= 0) { | ||
| expect(find.text('Value: $value'), findsOneWidget); | ||
|
|
||
| // Decrement the value. | ||
| await tester.tap(find.byIcon(Icons.exposure_minus_1)); | ||
| await tester.pump(); | ||
|
|
||
| value--; | ||
| } | ||
| }); | ||
|
|
||
| testWidgets('SaveButton indicates dirty status', (WidgetTester tester) async { | ||
| await tester.pumpWidget( | ||
| const example.ActionsExampleApp(), | ||
| ); | ||
|
|
||
| // Verify that initial color is green, as the value is not marked as dirty. | ||
| Color? saveButtonColor = getSaveButtonColor(tester); | ||
| expect(saveButtonColor, equals(Colors.green)); | ||
|
|
||
| // Decrement the value, which marks it as dirty. | ||
| await tester.tap(find.byIcon(Icons.exposure_minus_1)); | ||
| await tester.pump(); | ||
| expect(find.text('Value: -1'), findsOneWidget); | ||
|
|
||
| // Verify that the color is red, as the value is marked as dirty. | ||
| saveButtonColor = getSaveButtonColor(tester); | ||
| expect(saveButtonColor, equals(Colors.red)); | ||
|
|
||
| // Increment the value. | ||
| await tester.tap(find.byIcon(Icons.exposure_plus_1)); | ||
| await tester.pump(); | ||
| expect(find.text('Value: 0'), findsOneWidget); | ||
|
|
||
| // Verify that the color is red, as the value is still marked as dirty. | ||
| saveButtonColor = getSaveButtonColor(tester); | ||
| expect(saveButtonColor, equals(Colors.red)); | ||
| }); | ||
|
|
||
| testWidgets('SaveButton tap resets dirty status and adds log', (WidgetTester tester) async { | ||
| final List<String?> log = <String?>[]; | ||
|
|
||
| final DebugPrintCallback originalDebugPrint = debugPrint; | ||
| debugPrint = (String? message, {int? wrapWidth}) { | ||
| log.add(message); | ||
| }; | ||
|
|
||
| await tester.pumpWidget( | ||
| const example.ActionsExampleApp(), | ||
| ); | ||
|
|
||
| // Verify that value is not marked as dirty. | ||
| Color? saveButtonColor = getSaveButtonColor(tester); | ||
| expect(saveButtonColor, equals(Colors.green)); | ||
| expect( | ||
| find.descendant( | ||
| of: find.byType(example.SaveButton), | ||
| matching: find.text('0'), | ||
| ), | ||
| findsOneWidget, | ||
| ); | ||
|
|
||
| // Decrement the value, which marks it as dirty. | ||
| await tester.tap(find.byIcon(Icons.exposure_minus_1)); | ||
| await tester.pump(); | ||
| expect(find.text('Value: -1'), findsOneWidget); | ||
|
|
||
| // Verify that value is marked as dirty. | ||
| saveButtonColor = getSaveButtonColor(tester); | ||
| expect(saveButtonColor, equals(Colors.red)); | ||
| expect( | ||
| find.descendant( | ||
| of: find.byType(example.SaveButton), | ||
| matching: find.text('0'), | ||
| ), | ||
| findsOneWidget, | ||
| ); | ||
|
|
||
| // Tap SaveButton to reset dirty status. | ||
| await tester.tap(find.byType(example.SaveButton)); | ||
| await tester.pump(); | ||
|
|
||
| // Verify log record. | ||
| expect(log.length, equals(1)); | ||
| expect(log.last, equals('Saved Data: -1')); | ||
|
|
||
| // Verify that value is no more marked as dirty. | ||
| saveButtonColor = getSaveButtonColor(tester); | ||
| expect(saveButtonColor, equals(Colors.green)); | ||
| expect( | ||
| find.descendant( | ||
| of: find.byType(example.SaveButton), | ||
| matching: find.text('-1'), | ||
| ), | ||
| findsOneWidget, | ||
| ); | ||
|
|
||
| debugPrint = originalDebugPrint; | ||
| }); | ||
| } |