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Add tests for color_filtered.0.dart example. (#151064)

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

### Description
- Adds tests for `examples/api/lib/widgets/color_filter/color_filtered.0.dart`
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Kostia Sokolovskyi 2024-07-05 22:33:20 +02:00 committed by GitHub
parent 55520b842c
commit bff15689fd
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2 changed files with 53 additions and 1 deletions
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1
dev/bots/check_code_samples.dart
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@ -380,7 +380,6 @@ final Set<String> _knownMissingTests = <String>{
'examples/api/test/widgets/restoration/restoration_mixin.0_test.dart',
'examples/api/test/widgets/actions/action_listener.0_test.dart',
'examples/api/test/widgets/actions/focusable_action_detector.0_test.dart',
'examples/api/test/widgets/color_filter/color_filtered.0_test.dart',
'examples/api/test/widgets/focus_scope/focus_scope.0_test.dart',
'examples/api/test/widgets/scroll_view/custom_scroll_view.1_test.dart',
'examples/api/test/animation/curves/curve2_d.0_test.dart',

53
examples/api/test/widgets/color_filter/color_filtered.0_test.dart Normal file
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@ -0,0 +1,53 @@
// 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 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter_api_samples/widgets/color_filter/color_filtered.0.dart'
as example;
import 'package:flutter_test/flutter_test.dart';
void main() {
// The app being tested loads images via HTTP which the test
// framework defeats by default.
setUpAll(() {
HttpOverrides.global = null;
});
testWidgets('Color filters are applied to the images', (WidgetTester tester) async {
await tester.pumpWidget(
const example.ColorFilteredExampleApp(),
);
await tester.pumpAndSettle();
// Verify that two images are displayed.
expect(find.byType(Image), findsNWidgets(2));
RenderObject renderObject = tester.firstRenderObject(
find.byType(ColorFiltered).first,
);
ColorFilterLayer colorFilterLayer =
renderObject.debugLayer! as ColorFilterLayer;
// Verify that red colored filter with modulate blend mode is applied to the first image.
expect(
colorFilterLayer.colorFilter,
equals(const ColorFilter.mode(Colors.red, BlendMode.modulate)),
);
renderObject = tester.firstRenderObject(
find.byType(ColorFiltered).last,
);
colorFilterLayer = renderObject.debugLayer! as ColorFilterLayer;
// Verify that grey colored filter with saturation blend mode is applied to the first image.
expect(
colorFilterLayer.colorFilter,
equals(const ColorFilter.mode(Colors.grey, BlendMode.saturation)),
);
});
}