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a7bdf369e5
Part of #130459. Adds a test to the [second focus example](https://api.flutter.dev/flutter/widgets/Focus-class.html#widgets.Focus.2) and makes the function of the example more clear.
101 lines
3.2 KiB
Dart
101 lines
3.2 KiB
Dart
// Copyright 2014 The Flutter 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/material.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter_api_samples/widgets/focus_scope/focus.1.dart'
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as example;
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import 'package:flutter_test/flutter_test.dart';
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void main() {
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testWidgets('FocusableText shows content and color depending on focus',
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(WidgetTester tester) async {
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await tester.pumpWidget(const MaterialApp(
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home: Scaffold(
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body: example.FocusableText(
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'Item 0',
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autofocus: false,
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),
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),
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));
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// Autofocus needs to check that no other node in the [FocusScope] is
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// focused and can only request focus for the second frame.
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await tester.pumpAndSettle();
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expect(find.descendant(
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of: find.byType(example.FocusableText),
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matching: find.byType(Focus),
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), findsOneWidget);
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expect(find.text('Item 0'), findsOneWidget);
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expect(find.byType(Container), findsOneWidget);
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final Container container1 = tester.widget<Container>(
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find.byType(Container)
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);
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expect(container1.color, Colors.white);
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await tester.pumpWidget(const MaterialApp(
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home: Scaffold(
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body: example.FocusableText(
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'Item 1',
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autofocus: true,
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),
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),
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));
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await tester.pumpAndSettle();
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final Finder focusableTextFinder2 = find.ancestor(
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of: find.text('Item 1'),
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matching: find.byType(example.FocusableText),
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);
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expect(tester.widget<Focus>(find.descendant(
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of: focusableTextFinder2,
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matching: find.byType(Focus),
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)).autofocus, isTrue);
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final Container container2 = tester.widget<Container>(find.descendant(
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of: focusableTextFinder2,
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matching: find.byType(Container),
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));
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expect(container2.color, Colors.red);
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});
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testWidgets('builds list showcasing focus traversal',
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(WidgetTester tester) async {
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await tester.pumpWidget(const example.FocusExampleApp());
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await tester.pumpAndSettle();
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expect(find.byType(ListView), findsOneWidget);
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final Finder childFinder = find.descendant(
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of: find.byType(ListView),
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matching: find.byType(example.FocusableText),
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);
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expect(childFinder, findsAtLeastNWidgets(2));
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Container container0 = tester.widget<Container>(find.descendant(
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of: childFinder.first,
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matching: find.byType(Container),
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));
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Container container1 = tester.widget<Container>(find.descendant(
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of: childFinder.at(1),
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matching: find.byType(Container),
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));
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expect(container0.color, Colors.red);
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expect(container1.color, Colors.white);
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await tester.sendKeyDownEvent(LogicalKeyboardKey.arrowDown);
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await tester.pumpAndSettle();
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container0 = tester.widget<Container>(find.descendant(
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of: childFinder.first,
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matching: find.byType(Container),
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));
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container1 = tester.widget<Container>(find.descendant(
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of: childFinder.at(1),
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matching: find.byType(Container),
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));
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expect(container0.color, Colors.white);
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expect(container1.color, Colors.red);
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});
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}
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