Fixed unit tests

test/AvaloniaEdit.Tests/AvaloniaMocks/MockFontManagerImpl.cs

@@ -0,0 +1,43 @@
+using Avalonia.Media;
+using Avalonia.Platform;
+
+using Moq;
+
+using System.Collections.Generic;
+using System.Globalization;
+
+namespace AvaloniaEdit.AvaloniaMocks
+{
+    public class MockFontManagerImpl : IFontManagerImpl
+    {
+        private readonly string _defaultFamilyName;
+
+        public MockFontManagerImpl(string defaultFamilyName = "Default")
+        {
+            _defaultFamilyName = defaultFamilyName;
+        }
+
+        public string GetDefaultFontFamilyName()
+        {
+            return _defaultFamilyName;
+        }
+
+        public IEnumerable<string> GetInstalledFontFamilyNames(bool checkForUpdates = false)
+        {
+            return new[] { _defaultFamilyName };
+        }
+
+        public bool TryMatchCharacter(int codepoint, FontStyle fontStyle, FontWeight fontWeight, FontFamily fontFamily,
+            CultureInfo culture, out Typeface fontKey)
+        {
+            fontKey = new Typeface(_defaultFamilyName);
+
+            return false;
+        }
+
+        public IGlyphTypefaceImpl CreateGlyphTypeface(Typeface typeface)
+        {
+            return new MockGlyphTypeface();
+        }
+    }
+}

test/AvaloniaEdit.Tests/AvaloniaMocks/MockGlyphTypeface.cs

@@ -0,0 +1,48 @@
+using Avalonia.Platform;
+
+using System;
+
+namespace AvaloniaEdit.AvaloniaMocks
+{
+    public class MockGlyphTypeface : IGlyphTypefaceImpl
+    {
+        public short DesignEmHeight => 10;
+        public int Ascent => 2;
+        public int Descent => 10;
+        public int LineGap { get; }
+        public int UnderlinePosition { get; }
+        public int UnderlineThickness { get; }
+        public int StrikethroughPosition { get; }
+        public int StrikethroughThickness { get; }
+        public bool IsFixedPitch { get; }
+
+        public ushort GetGlyph(uint codepoint)
+        {
+            return 0;
+        }
+
+        public ushort[] GetGlyphs(ReadOnlySpan<uint> codepoints)
+        {
+            return new ushort[codepoints.Length];
+        }
+
+        public int GetGlyphAdvance(ushort glyph)
+        {
+            return 8;
+        }
+
+        public int[] GetGlyphAdvances(ReadOnlySpan<ushort> glyphs)
+        {
+            var advances = new int[glyphs.Length];
+
+            for (var i = 0; i < advances.Length; i++)
+            {
+                advances[i] = 8;
+            }
+
+            return advances;
+        }
+
+        public void Dispose() { }
+    }
+}

test/AvaloniaEdit.Tests/AvaloniaMocks/TestServices.cs

@@ -74,7 +74,8 @@ namespace AvaloniaEdit.AvaloniaMocks
             IPlatformThreadingInterface threadingInterface = null,
             IWindowImpl windowImpl = null,
             IWindowingPlatform windowingPlatform = null,
-            PlatformHotkeyConfiguration platformHotkeyConfiguration = null)
+            PlatformHotkeyConfiguration platformHotkeyConfiguration = null,
+            IFontManagerImpl fontManagerImpl = null)
         {
             AssetLoader = assetLoader;
             FocusManager = focusManager;
@@ -93,6 +94,7 @@ namespace AvaloniaEdit.AvaloniaMocks
             WindowImpl = windowImpl;
             WindowingPlatform = windowingPlatform;
             PlatformHotkeyConfiguration = platformHotkeyConfiguration;
+            FontManagerImpl = fontManagerImpl;
         }
 
         public IAssetLoader AssetLoader { get; }
@@ -112,6 +114,7 @@ namespace AvaloniaEdit.AvaloniaMocks
         public IWindowImpl WindowImpl { get; }
         public IWindowingPlatform WindowingPlatform { get; }
         public PlatformHotkeyConfiguration PlatformHotkeyConfiguration { get; }
+        public IFontManagerImpl FontManagerImpl { get; }
 
         public TestServices With(
             IAssetLoader assetLoader = null,
@@ -130,7 +133,9 @@ namespace AvaloniaEdit.AvaloniaMocks
             Func<Styles> theme = null,
             IPlatformThreadingInterface threadingInterface = null,
             IWindowImpl windowImpl = null,
-            IWindowingPlatform windowingPlatform = null)
+            IWindowingPlatform windowingPlatform = null,
+            PlatformHotkeyConfiguration platformHotkeyConfiguration = null,
+            IFontManagerImpl fontManagerImpl = null)
         {
             return new TestServices(
                 assetLoader: assetLoader ?? AssetLoader,
@@ -148,7 +153,9 @@ namespace AvaloniaEdit.AvaloniaMocks
                 theme: theme ?? Theme,
                 threadingInterface: threadingInterface ?? ThreadingInterface,
                 windowingPlatform: windowingPlatform ?? WindowingPlatform,
-                windowImpl: windowImpl ?? WindowImpl);
+                windowImpl: windowImpl ?? WindowImpl,
+                platformHotkeyConfiguration: platformHotkeyConfiguration ?? PlatformHotkeyConfiguration,
+                fontManagerImpl: fontManagerImpl ?? FontManagerImpl);
         }
 
         private static Styles CreateDefaultTheme()

test/AvaloniaEdit.Tests/AvaloniaMocks/UnitTestApplication.cs

@@ -56,7 +56,8 @@ namespace AvaloniaEdit.AvaloniaMocks
                 .Bind<ICursorFactory>().ToConstant(Services.StandardCursorFactory)
                 .Bind<IStyler>().ToConstant(Services.Styler)
                 .Bind<IWindowingPlatform>().ToConstant(Services.WindowingPlatform)
-                .Bind<PlatformHotkeyConfiguration>().ToConstant(Services.PlatformHotkeyConfiguration);
+                .Bind<PlatformHotkeyConfiguration>().ToConstant(Services.PlatformHotkeyConfiguration)
+                .Bind<IFontManagerImpl>().ToConstant(Services.FontManagerImpl);
             var styles = Services.Theme?.Invoke();
 
             if (styles != null)

test/AvaloniaEdit.Tests/Editing/ChangeDocumentTests.cs

@@ -32,7 +32,8 @@ namespace AvaloniaEdit.Editing
             using (UnitTestApplication.Start(new TestServices(
                 renderInterface: new MockPlatformRenderInterface(),
                 platform: new MockRuntimePlatform(),
-                platformHotkeyConfiguration: new MockPlatformHotkeyConfiguration())))
+                platformHotkeyConfiguration: new MockPlatformHotkeyConfiguration(),
+                fontManagerImpl: new MockFontManagerImpl())))
             {
                 TextArea textArea = new TextArea();
                 textArea.Document = new TextDocument("1\n2\n3\n4th line");
@@ -51,7 +52,8 @@ namespace AvaloniaEdit.Editing
             using (UnitTestApplication.Start(new TestServices(
                 renderInterface: new MockPlatformRenderInterface(),
                 platform: new MockRuntimePlatform(),
-                platformHotkeyConfiguration: new MockPlatformHotkeyConfiguration())))
+                platformHotkeyConfiguration: new MockPlatformHotkeyConfiguration(),
+                fontManagerImpl: new MockFontManagerImpl())))
             {
                 TextArea textArea = new TextArea();
                 textArea.Document = new TextDocument("1\n2\n3\n4th line");
@@ -70,7 +72,8 @@ namespace AvaloniaEdit.Editing
             using (UnitTestApplication.Start(new TestServices(
                 renderInterface: new MockPlatformRenderInterface(),
                 platform: new MockRuntimePlatform(),
-                platformHotkeyConfiguration: new MockPlatformHotkeyConfiguration())))
+                platformHotkeyConfiguration: new MockPlatformHotkeyConfiguration(),
+                fontManagerImpl: new MockFontManagerImpl())))
             {
                 TextArea textArea = new TextArea();
                 TextDocument newDocument = new TextDocument();