61 lines
1.9 KiB
Dart
61 lines
1.9 KiB
Dart
// Author: fruit.com.cn
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// 为界面视觉复核加载项目字体并导出测试渲染图。
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import 'dart:io';
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import 'dart:ui' as ui;
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import 'package:flutter/rendering.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter_test/flutter_test.dart';
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const double _capturePixelRatio = 3;
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/// 为可选截图使用实际字体，不影响普通测试执行。
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Future<void> loadCaptureFonts(WidgetTester tester) async {
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await tester.runAsync(() async {
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final fonts = {
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'Outfit': [
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'Outfit-Regular.ttf',
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'Outfit-SemiBold.ttf',
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'Outfit-Bold.ttf',
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],
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'PlusJakartaSans': [
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'PlusJakartaSans-Regular.ttf',
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'PlusJakartaSans-Medium.ttf',
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'PlusJakartaSans-SemiBold.ttf',
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'PlusJakartaSans-Bold.ttf',
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],
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// 测试默认字体仅作占位，截图使用项目正文字体替换。
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'Ahem': ['PlusJakartaSans-Regular.ttf'],
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};
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for (final family in fonts.entries) {
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final loader = FontLoader(family.key);
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for (final asset in family.value) {
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loader.addFont(rootBundle.load('assets/fonts/$asset'));
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}
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await loader.load();
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}
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final icons = FontLoader('MaterialIcons');
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icons.addFont(rootBundle.load('fonts/MaterialIcons-Regular.otf'));
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await icons.load();
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});
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}
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/// 导出指定边界的渲染结果，图片为测试产物而非界面资源。
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Future<void> saveWidgetCapture(
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WidgetTester tester,
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Key boundaryKey,
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String path,
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) async {
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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(pixelRatio: _capturePixelRatio);
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final bytes = await image.toByteData(format: ui.ImageByteFormat.png);
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if (bytes == null) throw StateError('Screenshot encoding failed');
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await File(path).writeAsBytes(bytes.buffer.asUint8List());
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image.dispose();
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});
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}
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