54 lines
1.4 KiB
Dart
54 lines
1.4 KiB
Dart
import 'dart:convert';
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import 'dart:typed_data';
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import 'dart:ui';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:weblibre/features/geckoview/utils/image_helper.dart';
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void main() {
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testWidgets('tryDecodeImage rasterizes svg bytes at favicon size', (
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tester,
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) async {
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clearImageCache();
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final svgBytes = Uint8List.fromList(utf8.encode(_svgIcon));
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final image = await tryDecodeImage(svgBytes);
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expect(image, isNotNull);
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expect(image!.value, isNotNull);
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expect(image.value!.width, 32);
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expect(image.value!.height, 32);
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final byteData = await image.value!.toByteData(
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format: ImageByteFormat.rawRgba,
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);
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expect(byteData, isNotNull);
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// A pixel in the right half should be painted once the SVG is scaled
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// to the requested raster size instead of being left in the top-left.
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expect(_rgbaAt(byteData!, width: 32, x: 24, y: 16), [47, 128, 237, 255]);
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});
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}
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List<int> _rgbaAt(
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ByteData data, {
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required int width,
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required int x,
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required int y,
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}) {
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final offset = (y * width + x) * 4;
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return [
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data.getUint8(offset),
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data.getUint8(offset + 1),
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data.getUint8(offset + 2),
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data.getUint8(offset + 3),
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];
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}
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const _svgIcon = '''
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
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<rect width="16" height="16" rx="3" fill="#2F80ED"/>
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<circle cx="8" cy="8" r="4" fill="#FFFFFF"/>
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</svg>
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''';
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