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Add test for focus_node.0.dart API example. (#146943)

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This PR contributes to https://github.com/flutter/flutter/issues/130459

### Description
- Adds `examples/api/test/widgets/focus_manager/focus_node.0_test.dart` test
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Kostia Sokolovskyi 2024-04-23 22:32:07 +02:00 committed by GitHub
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commit f6dc1ac00d
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2 changed files with 191 additions and 1 deletions
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1
dev/bots/check_code_samples.dart
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@ -392,7 +392,6 @@ final Set<String> _knownMissingTests = <String>{
'examples/api/test/widgets/navigator/restorable_route_future.0_test.dart',
'examples/api/test/widgets/navigator/navigator_state.restorable_push.0_test.dart',
'examples/api/test/widgets/focus_manager/focus_node.unfocus.0_test.dart',
'examples/api/test/widgets/focus_manager/focus_node.0_test.dart',
'examples/api/test/widgets/framework/build_owner.0_test.dart',
'examples/api/test/widgets/framework/error_widget.0_test.dart',
'examples/api/test/widgets/inherited_theme/inherited_theme.0_test.dart',

191
examples/api/test/widgets/focus_manager/focus_node.0_test.dart Normal file
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@ -0,0 +1,191 @@
// 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/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_api_samples/widgets/focus_manager/focus_node.0.dart'
as example;
import 'package:flutter_test/flutter_test.dart';
void main() {
testWidgets(
'FocusNode gets focused and unfocused on ColorfulButton tap',
(WidgetTester tester) async {
await tester.pumpWidget(
const example.FocusNodeExampleApp(),
);
final Element button = tester.element(
find.byType(example.ColorfulButton),
);
expect(
tester.binding.focusManager.primaryFocus?.context,
isNot(equals(button)),
);
// Tapping on ColorfulButton to focus on FocusNode.
await tester.tap(find.byType(example.ColorfulButton));
await tester.pump();
expect(
tester.binding.focusManager.primaryFocus?.context,
equals(button),
);
// Tapping on ColorfulButton to unfocus from FocusNode.
await tester.tap(find.byType(example.ColorfulButton));
await tester.pump();
expect(
tester.binding.focusManager.primaryFocus?.context,
isNot(equals(button)),
);
},
);
testWidgets(
'FocusNode updates the text label when focused or unfocused',
(WidgetTester tester) async {
await tester.pumpWidget(
const example.FocusNodeExampleApp(),
);
expect(find.text('Press to focus'), findsOneWidget);
expect(find.text("I'm in color! Press R,G,B!"), findsNothing);
// Tapping on ColorfulButton to focus on FocusNode.
await tester.tap(find.byType(example.ColorfulButton));
await tester.pump();
expect(find.text('Press to focus'), findsNothing);
expect(find.text("I'm in color! Press R,G,B!"), findsOneWidget);
// Tapping on ColorfulButton to unfocus from FocusNode.
await tester.tap(find.byType(example.ColorfulButton));
await tester.pump();
expect(find.text('Press to focus'), findsOneWidget);
expect(find.text("I'm in color! Press R,G,B!"), findsNothing);
},
);
testWidgets(
'FocusNode updates color of the Container according to the key events when focused',
(WidgetTester tester) async {
await tester.pumpWidget(
const example.FocusNodeExampleApp(),
);
// Tapping on ColorfulButton to focus on FocusNode.
await tester.tap(find.byType(example.ColorfulButton));
await tester.pump();
final Finder containerFinder = find.descendant(
of: find.byType(example.ColorfulButton),
matching: find.byType(Container),
);
Container container = tester.widget<Container>(containerFinder);
expect(container.color, equals(Colors.white));
await tester.sendKeyEvent(LogicalKeyboardKey.keyR);
await tester.pump();
container = tester.widget<Container>(containerFinder);
expect(container.color, equals(Colors.red));
await tester.sendKeyEvent(LogicalKeyboardKey.keyG);
await tester.pump();
container = tester.widget<Container>(containerFinder);
expect(container.color, equals(Colors.green));
await tester.sendKeyEvent(LogicalKeyboardKey.keyB);
await tester.pump();
container = tester.widget<Container>(containerFinder);
expect(container.color, equals(Colors.blue));
},
);
testWidgets(
'FocusNode does not listen to the key events when unfocused',
(WidgetTester tester) async {
await tester.pumpWidget(
const example.FocusNodeExampleApp(),
);
final Finder containerFinder = find.descendant(
of: find.byType(example.ColorfulButton),
matching: find.byType(Container),
);
Container container = tester.widget<Container>(containerFinder);
expect(container.color, equals(Colors.white));
await tester.sendKeyEvent(LogicalKeyboardKey.keyR);
await tester.pump();
container = tester.widget<Container>(containerFinder);
expect(container.color, equals(Colors.white));
await tester.sendKeyEvent(LogicalKeyboardKey.keyG);
await tester.pump();
container = tester.widget<Container>(containerFinder);
expect(container.color, equals(Colors.white));
await tester.sendKeyEvent(LogicalKeyboardKey.keyB);
await tester.pump();
container = tester.widget<Container>(containerFinder);
expect(container.color, equals(Colors.white));
},
);
testWidgets(
'FocusNode sets color to the white when unfocused and sets it back to the selected one when focused',
(WidgetTester tester) async {
await tester.pumpWidget(
const example.FocusNodeExampleApp(),
);
final Finder containerFinder = find.descendant(
of: find.byType(example.ColorfulButton),
matching: find.byType(Container),
);
Container container = tester.widget<Container>(containerFinder);
expect(container.color, equals(Colors.white));
// Tapping on ColorfulButton to focus on FocusNode.
await tester.tap(find.byType(example.ColorfulButton));
await tester.pump();
container = tester.widget<Container>(containerFinder);
expect(container.color, equals(Colors.white));
await tester.sendKeyEvent(LogicalKeyboardKey.keyR);
await tester.pump();
container = tester.widget<Container>(containerFinder);
expect(container.color, equals(Colors.red));
// Tapping on ColorfulButton to unfocus from FocusNode.
await tester.tap(find.byType(example.ColorfulButton));
await tester.pump();
container = tester.widget<Container>(containerFinder);
expect(container.color, equals(Colors.white));
// Tapping on ColorfulButton to focus on FocusNode.
await tester.tap(find.byType(example.ColorfulButton));
await tester.pump();
container = tester.widget<Container>(containerFinder);
expect(container.color, equals(Colors.red));
},
);
}