Make FlutterTest the default test font (#40188)

Make FlutterTest the default test font

Author: LongCatIsLooong

lib/web_ui/lib/src/engine/canvaskit/fonts.dart

@@ -184,12 +184,15 @@ class SkiaFontCollection implements FontCollection {
       }
     }
     final List<UnregisteredFont?> completedPendingFonts = await Future.wait(pendingFonts);
-    completedPendingFonts.add(UnregisteredFont(
+    final List<UnregisteredFont> fonts = <UnregisteredFont>[
+      UnregisteredFont(
         EmbeddedTestFont.flutterTest.data.buffer,
         '<embedded>',
         EmbeddedTestFont.flutterTest.fontFamily,
-    ));
-    _unregisteredFonts.addAll(completedPendingFonts.whereType<UnregisteredFont>());
+      ),
+      ...completedPendingFonts.whereType<UnregisteredFont>(),
+    ];
+    _unregisteredFonts.addAll(fonts);
 
     // Ahem must be added to font fallbacks list regardless of where it was
     // downloaded from.

lib/web_ui/lib/src/engine/text/font_collection.dart

@@ -76,13 +76,13 @@ class HtmlFontCollection implements FontCollection {
   @override
   Future<void> debugDownloadTestFonts() async {
     final FontManager fontManager = _testFontManager = FontManager();
-    for (final MapEntry<String, String> fontEntry in testFontUrls.entries) {
-      fontManager.downloadAsset(fontEntry.key, 'url(${fontEntry.value})', const <String, String>{});
-    }
     fontManager._downloadedFonts.add(createDomFontFace(
       EmbeddedTestFont.flutterTest.fontFamily,
       EmbeddedTestFont.flutterTest.data,
     ));
+    for (final MapEntry<String, String> fontEntry in testFontUrls.entries) {
+      fontManager.downloadAsset(fontEntry.key, 'url(${fontEntry.value})', const <String, String>{});
+    }
     await fontManager.downloadAllFonts();
   }
 

lib/web_ui/test/canvaskit/skia_font_collection_test.dart

@@ -181,5 +181,14 @@ void testMain() {
       expect(fontCollection.debugRegisteredFonts, isNotEmpty);
       expect(warnings, isEmpty);
     });
+
+    test('FlutterTest is the default test font', () async {
+      final SkiaFontCollection fontCollection = SkiaFontCollection();
+
+      await fontCollection.debugDownloadTestFonts();
+      fontCollection.registerDownloadedFonts();
+      expect(fontCollection.debugRegisteredFonts, isNotEmpty);
+      expect(fontCollection.debugRegisteredFonts!.first.family, 'FlutterTest');
+    });
   });
 }

runtime/test_font_data.cc

@@ -1621,19 +1621,19 @@ namespace flutter {
 std::vector<sk_sp<SkTypeface>> GetTestFontData() {
   std::vector<sk_sp<SkTypeface>> typefaces;
 #if EMBED_TEST_FONT_DATA
+  typefaces.push_back(SkTypeface::MakeFromStream(
+      SkMemoryStream::MakeDirect(kFlutterTestFont, kFlutterTestFontLength)));
   typefaces.push_back(SkTypeface::MakeFromStream(
       SkMemoryStream::MakeDirect(kAhemFont, kAhemFontLength)));
   typefaces.push_back(SkTypeface::MakeFromStream(
       SkMemoryStream::MakeDirect(kCoughFont, kCoughFontLength)));
-  typefaces.push_back(SkTypeface::MakeFromStream(
-      SkMemoryStream::MakeDirect(kFlutterTestFont, kFlutterTestFontLength)));
 #endif  // EMBED_TEST_FONT_DATA
   return typefaces;
 }
 
 std::vector<std::string> GetTestFontFamilyNames() {
 #if EMBED_TEST_FONT_DATA
-  std::vector<std::string> names = {"Ahem", "Cough", "FlutterTest"};
+  std::vector<std::string> names = {"FlutterTest", "Ahem", "Cough"};
 #else   // EMBED_TEST_FONT_DATA
   std::vector<std::string> names;
 #endif  // EMBED_TEST_FONT_DATA

testing/dart/canvas_test.dart

@@ -331,6 +331,7 @@ void main() {
       builder.pushStyle(TextStyle(
         decoration: TextDecoration.underline,
         decorationColor: const Color(0xFF0000FF),
+        fontFamily: 'Ahem',
         fontSize: 10,
         color: const Color(0xFF000000),
         decorationStyle: style,

testing/dart/paragraph_builder_test.dart

@@ -7,9 +7,6 @@ import 'dart:ui';
 import 'package:litetest/litetest.dart';
 
 void main() {
-  // The actual values for font measurements will vary by platform slightly.
-  const double epsillon = 0.0001;
-
   test('Should be able to build and layout a paragraph', () {
     final ParagraphBuilder builder = ParagraphBuilder(ParagraphStyle());
     builder.addText('Hello');
@@ -40,10 +37,10 @@ void main() {
 
     final List<TextBox> boxes = paragraph.getBoxesForRange(0, 3);
     expect(boxes.length, 1);
-    expect(boxes.first.left, 0);
-    expect(boxes.first.top, closeTo(0, epsillon));
-    expect(boxes.first.right, closeTo(42, epsillon));
-    expect(boxes.first.bottom, closeTo(14, epsillon));
+    expect(boxes.first.left, 0.0);
+    expect(boxes.first.top, 0.0);
+    expect(boxes.first.right, 42.0);
+    expect(boxes.first.bottom, 14.0);
     expect(boxes.first.direction, TextDirection.ltr);
   });
 
@@ -60,13 +57,13 @@ void main() {
     final List<LineMetrics> metrics = paragraph.computeLineMetrics();
     expect(metrics.length, 1);
     expect(metrics.first.hardBreak, true);
-    expect(metrics.first.ascent, closeTo(11.200042724609375, epsillon));
-    expect(metrics.first.descent, closeTo(2.799957275390625, epsillon));
-    expect(metrics.first.unscaledAscent, closeTo(11.200042724609375, epsillon));
+    expect(metrics.first.ascent, 10.5);
+    expect(metrics.first.descent, 3.5);
+    expect(metrics.first.unscaledAscent, 10.5);
     expect(metrics.first.height, 14.0);
     expect(metrics.first.width, 70.0);
     expect(metrics.first.left, 0.0);
-    expect(metrics.first.baseline, closeTo(11.200042724609375, epsillon));
+    expect(metrics.first.baseline, 10.5);
     expect(metrics.first.lineNumber, 0);
   });
 }