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Add test for dismissible.0.dart API example. (#146723)
This PR contributes to #130459 ### Description - Adds `examples/api/test/widgets/dismissible/dismissible.0_test.dart` test
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examples/api/test/widgets/dismissible/dismissible.0_test.dart
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// 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. | ||
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import 'package:flutter/material.dart'; | ||
import 'package:flutter_api_samples/widgets/dismissible/dismissible.0.dart' | ||
as example; | ||
import 'package:flutter_test/flutter_test.dart'; | ||
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void main() { | ||
Future<void> dismissHorizontally({ | ||
required WidgetTester tester, | ||
required Finder finder, | ||
required AxisDirection direction, | ||
}) async { | ||
final double width = (tester.renderObject(finder) as RenderBox).size.width; | ||
final double dx = width * 0.8; | ||
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final Offset offset = switch (direction) { | ||
AxisDirection.left => Offset(-dx, 0.0), | ||
AxisDirection.right => Offset(dx, 0.0), | ||
_ => throw ArgumentError('$direction is not supported'), | ||
}; | ||
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await tester.drag(finder, offset); | ||
} | ||
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testWidgets( | ||
'ListTiles can be dismissed from right to left', | ||
(WidgetTester tester) async { | ||
await tester.pumpWidget( | ||
const example.DismissibleExampleApp(), | ||
); | ||
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for (final int index in <int>[0, 33, 66, 99]) { | ||
final ValueKey<int> key = ValueKey<int>(index); | ||
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await tester.scrollUntilVisible(find.byKey(key), 100); | ||
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expect(find.byKey(key), findsOneWidget); | ||
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await dismissHorizontally( | ||
tester: tester, | ||
finder: find.byKey(key), | ||
direction: AxisDirection.left, | ||
); | ||
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await tester.pumpAndSettle(); | ||
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expect(find.byKey(key), findsNothing); | ||
} | ||
}, | ||
); | ||
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testWidgets( | ||
'ListTiles can be dismissed from left to right', | ||
(WidgetTester tester) async { | ||
await tester.pumpWidget( | ||
const example.DismissibleExampleApp(), | ||
); | ||
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for (final int index in <int>[0, 33, 66, 99]) { | ||
final ValueKey<int> key = ValueKey<int>(index); | ||
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await tester.scrollUntilVisible(find.byKey(key), 100); | ||
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expect(find.byKey(key), findsOneWidget); | ||
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await dismissHorizontally( | ||
tester: tester, | ||
finder: find.byKey(key), | ||
direction: AxisDirection.right, | ||
); | ||
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await tester.pumpAndSettle(); | ||
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expect(find.byKey(key), findsNothing); | ||
} | ||
}, | ||
); | ||
} |