79 lines
2.3 KiB
Dart
79 lines
2.3 KiB
Dart
// Author: fruit.com.cn
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// 职责：检查观看全集按钮实际绘制像素，防止渐变只配置而不可见。
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import 'dart:typed_data';
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import 'dart:ui' as ui;
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import 'package:flutter/material.dart';
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import 'package:flutter/rendering.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:fruitshorts/core/data/models/drama.dart';
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import 'package:fruitshorts/l10n/app_localizations.dart';
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import 'package:fruitshorts/pages/player/widgets/home_feed_recommend_panel.dart';
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const _boundaryKey = Key('watch-gradient-boundary');
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const _width = 280.0;
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const _sampleInset = 16;
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const _sampleY = 4;
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const _rgbaChannels = 4;
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const _minimumRedDelta = 50;
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const _drama = Drama(
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id: 'gradient',
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title: 'Gradient',
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synopsis: '',
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posterUrl: '',
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);
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Future<void> _pumpButton(WidgetTester tester) => tester.pumpWidget(
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MaterialApp(
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localizationsDelegates: AppLocalizations.localizationsDelegates,
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supportedLocales: AppLocalizations.supportedLocales,
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home: Scaffold(
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body: Center(
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child: RepaintBoundary(
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key: _boundaryKey,
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child: SizedBox(
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width: _width,
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child: HomeFeedWatchAllBar(drama: _drama, onTap: () {}),
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),
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),
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),
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),
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),
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);
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Color _sample(ByteData bytes, int width, int x) {
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final offset = (_sampleY * width + x) * _rgbaChannels;
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return Color.fromARGB(
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bytes.getUint8(offset + 3),
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bytes.getUint8(offset),
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bytes.getUint8(offset + 1),
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bytes.getUint8(offset + 2),
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);
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}
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void main() {
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testWidgets('should_paint_visible_red_gradient_instead_of_flat_fill', (
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tester,
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) async {
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await _pumpButton(tester);
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final boundary = tester.renderObject<RenderRepaintBoundary>(
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find.byKey(_boundaryKey),
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);
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await tester.runAsync(() async {
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final image = await boundary.toImage();
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final bytes = (await image.toByteData(
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format: ui.ImageByteFormat.rawRgba,
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))!;
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final left = _sample(bytes, image.width, _sampleInset);
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final middle = _sample(bytes, image.width, image.width ~/ 2);
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final right = _sample(bytes, image.width, image.width - _sampleInset);
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image.dispose();
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expect(left.a, 1);
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expect(right.a, 1);
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expect((right.r - left.r) * 255, greaterThan(_minimumRedDelta));
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expect(left.g, lessThan(middle.g));
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expect(middle.g, lessThan(right.g));
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});
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});
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}
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