去年我遇到了这个确切的问题，也无法在测试中加载字体。不知道具体是 package 参数破坏了它，所以感谢您更新结果。
至于另一种解决方法，有一种两全其美的方法，您可以拥有独立的字体包，而不必在使用它的应用中声明打包的字体文件。
例如，我们有一个公司品牌/排版包，我们在多个应用程序中使用它，其中包含我们所有预配置的 TextStyle 声明，另一个独立包具有自定义生成的 IconData 存储在 @987654324 中@ 文件（如 FontAwesome）。
包装方面：
pubspec.yaml
flutter:
uses-material-design: true
assets:
- assets/fonts/
fonts:
- family: MyFont
fonts:
- asset: assets/fonts/MyFont.ttf
weight: 400
# etc
打包后的TextStyle：
class BrandStyles {
static const _packageName = '<package_name>';
static const headline1Style = TextStyle(
color: Colors.black,
fontFamily: 'MyFont',
fontSize: 60.0,
fontStyle: FontStyle.normal,
fontWeight: FontWeight.w400,
height: 1.16,
letterSpacing: 0,
package: _packageName,
);
// etc
}
黄金测试
void main() {
final widget = MaterialApp(
theme: ThemeData(
textTheme: TextTheme(
// use custom extension method to remove `package` value
headline1: BrandStyles.headline1Style.trimFontPackage(),
),
),
home: Scaffold(
body: SafeArea(child: StylesExample()),
),
);
setUp(() async {
TestWidgetsFlutterBinding.ensureInitialized();
final file = File('path/to/packaged/asset/MyFont.ttf').readAsBytesSync();
final bytes = Future<ByteData>.value(file.buffer.asByteData());
await (FontLoader('MyFont')..addFont(bytes)).load();
});
testWidgets('Golden typography test', (WidgetTester tester) async {
await tester.pumpWidget(widget);
await expectLater(
find.byType(MaterialApp), matchesGoldenFile('goldens/typography.png'));
});
}
extension StylingExtensions on TextStyle {
TextStyle trimFontPackage() {
return TextStyle(
inherit: inherit,
color: color,
backgroundColor: backgroundColor,
fontSize: fontSize,
fontWeight: fontWeight,
fontStyle: fontStyle,
letterSpacing: letterSpacing,
wordSpacing: wordSpacing,
textBaseline: textBaseline,
height: height,
locale: locale,
foreground: foreground,
background: background,
shadows: shadows,
fontFeatures: fontFeatures,
decoration: decoration,
decorationColor: decorationColor,
decorationStyle: decorationStyle,
decorationThickness: decorationThickness,
debugLabel: debugLabel,
/// `replaceAll` only required if loading multiple fonts,
/// otherwise set value to your single `fontFamily` name
fontFamily: fontFamily.replaceAll('packages/<package_name>/', ''),
);
}
}
或者，如果像我一样，您对自定义图标也有同样的问题，可以在您的自定义 IconData 的黄金测试中使用类似的扩展方法完成相同的操作，删除 fontPackage 值：
extension IconExtensions on IconData {
IconData convertToGolden() => IconData(
this.codePoint,
fontFamily: this.fontFamily,
);
}
您的应用端
pubspec.yaml
# ...
dependencies:
flutter:
sdk: flutter
<package_name>:
git:
url: <url_to_hosted_package>.git
ref: <release_tag>
main.dart
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData.light().copyWith(
textTheme: TextTheme(
headline1: BrandStyles.headline1Style,
),
),
);
}
}
现在不再需要在您的应用程序pubspec.yaml 中声明您的字体，甚至无需将样式包与您的实施应用程序放在同一个项目/存储库中。