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Fixes [Update `Slider` samples for updated Material 3 Slider spec](https://github.com/flutter/flutter/issues/159794) ### Description This updates Slider sample to include toggle to opt in to the updated Material 3 appearance . Remove redundant sample an asset diagram. ### Preview <img width="840" alt="Screenshot 2024-12-04 at 16 03 47" src="https://github.com/user-attachments/assets/b6db9efe-8416-460e-a745-bdf37c97ed61"> ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement]. - [x] I signed the [CLA]. - [x] I listed at least one issue that this PR fixes in the description above. - [x] I updated/added relevant documentation (doc comments with `///`). - [x] I added new tests to check the change I am making, or this PR is [test-exempt]. - [ ] I followed the [breaking change policy] and added [Data Driven Fixes] where supported. - [x] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. <!-- Links --> [Contributor Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md [Features we expect every widget to implement]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md [Data Driven Fixes]: https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md
36 lines
1.3 KiB
Dart
36 lines
1.3 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_api_samples/material/slider/slider.1.dart' as example;
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import 'package:flutter_test/flutter_test.dart';
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void main() {
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testWidgets('Slider shows secondary track', (WidgetTester tester) async {
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await tester.pumpWidget(
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const example.SliderApp(),
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);
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expect(find.byType(Slider), findsNWidgets(2));
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final Finder slider1Finder = find.byType(Slider).at(0);
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final Finder slider2Finder = find.byType(Slider).at(1);
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Slider slider1 = tester.widget(slider1Finder);
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Slider slider2 = tester.widget(slider2Finder);
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expect(slider1.secondaryTrackValue, slider2.value);
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const double targetValue = 0.8;
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final Rect rect = tester.getRect(slider2Finder);
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final Offset target = Offset(rect.left + (rect.right - rect.left) * targetValue, rect.top + (rect.bottom - rect.top) / 2);
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await tester.tapAt(target);
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await tester.pump();
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slider1 = tester.widget(slider1Finder);
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slider2 = tester.widget(slider2Finder);
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expect(slider1.secondaryTrackValue, closeTo(targetValue, 0.05));
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expect(slider1.secondaryTrackValue, slider2.value);
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});
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}
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