Add new transform draw test

tests/ImageSharp.Tests/Drawing/DrawImageTest.cs

@@ -10,6 +10,7 @@ using Xunit;
 namespace SixLabors.ImageSharp.Tests
 {
     using System;
+    using System.Numerics;
 
     public class DrawImageTest : FileTestBase
     {
@@ -45,6 +46,25 @@ namespace SixLabors.ImageSharp.Tests
             }
         }
 
+        [Theory]
+        [WithFileCollection(nameof(TestFiles), PixelTypes, PixelBlenderMode.Normal)]
+        public void ImageShouldDrawTransformedImage<TPixel>(TestImageProvider<TPixel> provider, PixelBlenderMode mode)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            using (Image<TPixel> image = provider.GetImage())
+            using (Image<TPixel> blend = Image.Load<TPixel>(TestFile.Create(TestImages.Bmp.Car).Bytes))
+            {
+                Matrix3x2 rotate = Matrix3x2Extensions.CreateRotationDegrees(45F);
+                Matrix3x2 scale = Matrix3x2Extensions.CreateScale(new SizeF(.25F, .25F));
+
+                blend.Mutate(x => x.Transform(rotate * scale));
+
+                var position = new Point((image.Width - blend.Width) / 2, (image.Height - blend.Height) / 2);
+                image.Mutate(x => x.DrawImage(blend, mode, .75F, new Size(blend.Width, blend.Height), position));
+                image.DebugSave(provider, new[] { "Transformed" });
+            }
+        }
+
         [Theory]
         [WithSolidFilledImages(100, 100, 255, 255, 255, PixelTypes.Rgba32)]
         public void ImageShouldHandleNegativeLocation(TestImageProvider<Rgba32> provider)

tests/ImageSharp.Tests/Processing/Transforms/TransformTests.cs

@@ -53,7 +53,7 @@ namespace SixLabors.ImageSharp.Tests.Processing.Transforms
                 using (Image<TPixel> image = provider.GetImage())
                 {
                     Matrix3x2 rotate = Matrix3x2Extensions.CreateRotationDegrees(z);
-                    Matrix3x2 scale = Matrix3x2Extensions.CreateScale(new SizeF(2F, 2F));
+                    Matrix3x2 scale = Matrix3x2Extensions.CreateScale(new SizeF(.5F, .5F));
 
                     image.Mutate(i => i.Transform(rotate * scale, sampler));
                     image.DebugSave(provider, string.Join("_", x, y, resamplerName));