fix tests

tests/Avalonia.UnitTests/MockPlatformRenderInterface.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.IO;
 using Avalonia.Media;
 using Avalonia.Platform;
+using Avalonia.Visuals.Media.Imaging;
 using Moq;
 
 namespace Avalonia.UnitTests
@@ -69,6 +70,21 @@ namespace Avalonia.UnitTests
             return Mock.Of<IBitmapImpl>();
         }
 
+        public IBitmapImpl LoadBitmapToWidth(Stream stream, int width, BitmapInterpolationMode interpolationMode = BitmapInterpolationMode.HighQuality)
+        {
+            return Mock.Of<IBitmapImpl>();
+        }
+
+        public IBitmapImpl LoadBitmapToHeight(Stream stream, int height, BitmapInterpolationMode interpolationMode = BitmapInterpolationMode.HighQuality)
+        {
+            return Mock.Of<IBitmapImpl>();
+        }
+
+        public IBitmapImpl ResizeBitmap(IBitmapImpl bitmapImpl, PixelSize destinationSize, BitmapInterpolationMode interpolationMode = BitmapInterpolationMode.HighQuality)
+        {
+            return Mock.Of<IBitmapImpl>();
+        }
+
         public IBitmapImpl LoadBitmap(
             PixelFormat format,
             IntPtr data,