add failing test for #3376

tests/Avalonia.Skia.UnitTests/FontManagerImplTests.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Linq;
 using System.Reflection;
 using Avalonia.Media;
 using Avalonia.Platform;
@@ -29,6 +30,23 @@ namespace Avalonia.Skia.UnitTests
             Assert.Equal(SKTypeface.Default.FontSlant, skTypeface.FontSlant);
         }
 
+        [Fact]
+        public void Should_Create_Typeface_From_Fallback_Bold()
+        {
+            var fontManager = new FontManagerImpl();
+
+            //we need to have a valid font name different from the default one
+            string fontName = fontManager.GetInstalledFontFamilyNames().First();
+
+            var glyphTypeface = (GlyphTypefaceImpl)fontManager.CreateGlyphTypeface(
+                new Typeface(new FontFamily($"A, B, {fontName}"), FontWeight.Bold));
+
+            var skTypeface = glyphTypeface.Typeface;
+
+            Assert.Equal(fontName, skTypeface.FamilyName);
+            Assert.Equal(SKFontStyle.Bold.Weight, skTypeface.FontWeight);
+        }
+
         [Fact]
         public void Should_Create_Typeface_For_Unknown_Font()
         {