From 5bbdfc55b4398a8d748e6561991a7ed70f614e2a Mon Sep 17 00:00:00 2001
From: Jeremy Koritzinsky <jkoritzinsky@gmail.com>
Date: Sun, 29 May 2016 12:26:48 -0400
Subject: [PATCH] Added a render test.

---
 .../Avalonia.RenderTests.projitems            |   3 +-
 .../Avalonia.RenderTests/OpacityMaskTests.cs  |  64 ++++++++++++++++++
 .../Opacity_Mask_Masks_Element.expected.png   | Bin 0 -> 846 bytes
 .../Opacity_Mask_Masks_Element.expected.png   | Bin 0 -> 989 bytes
 .../Opacity_Mask_Masks_Element.expected.png   | Bin 0 -> 846 bytes
 5 files changed, 66 insertions(+), 1 deletion(-)
 create mode 100644 tests/Avalonia.RenderTests/OpacityMaskTests.cs
 create mode 100644 tests/TestFiles/Cairo/OpacityMask/Opacity_Mask_Masks_Element.expected.png
 create mode 100644 tests/TestFiles/Direct2D1/OpacityMask/Opacity_Mask_Masks_Element.expected.png
 create mode 100644 tests/TestFiles/Skia/OpacityMask/Opacity_Mask_Masks_Element.expected.png

diff --git a/tests/Avalonia.RenderTests/Avalonia.RenderTests.projitems b/tests/Avalonia.RenderTests/Avalonia.RenderTests.projitems
index 79ceddf3bb..0d54c021ca 100644
--- a/tests/Avalonia.RenderTests/Avalonia.RenderTests.projitems
+++ b/tests/Avalonia.RenderTests/Avalonia.RenderTests.projitems
@@ -9,6 +9,8 @@
     <Import_RootNamespace>Avalonia.RenderTests</Import_RootNamespace>
   </PropertyGroup>
   <ItemGroup>
+    <Compile Include="$(MSBuildThisFileDirectory)GeometryClippingTests.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)OpacityMaskTests.cs" />
     <Compile Include="Controls\ImageTests.cs" />
     <Compile Include="Controls\BorderTests.cs" />
     <Compile Include="Media\ImageBrushTests.cs" />
@@ -22,6 +24,5 @@
     <Compile Include="Shapes\RectangleTests.cs" />
     <Compile Include="TestBase.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
-    <Compile Include="GeometryClippingTests.cs" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/tests/Avalonia.RenderTests/OpacityMaskTests.cs b/tests/Avalonia.RenderTests/OpacityMaskTests.cs
new file mode 100644
index 0000000000..7d9b6d7fa8
--- /dev/null
+++ b/tests/Avalonia.RenderTests/OpacityMaskTests.cs
@@ -0,0 +1,64 @@
+using Avalonia.Controls;
+using Avalonia.Controls.Shapes;
+using Avalonia.Media;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using Xunit;
+
+#if AVALONIA_CAIRO
+namespace Avalonia.Cairo.RenderTests
+#elif AVALONIA_SKIA
+namespace Avalonia.Skia.RenderTests
+#else
+namespace Avalonia.Direct2D1.RenderTests
+#endif
+{
+    public class OpacityMaskTests : TestBase
+    {
+        public OpacityMaskTests()
+            : base("OpacityMask")
+        {
+        }
+
+#if AVALONIA_SKIA
+        [Fact(Skip = "Opacity Masks not supported on Skia")]
+#else
+        [Fact]
+#endif
+        public void Opacity_Mask_Masks_Element()
+        {
+            var target = new Canvas
+            {
+                OpacityMask = new LinearGradientBrush
+                {
+                    StartPoint = new RelativePoint(0, 0, RelativeUnit.Relative),
+                    EndPoint = new RelativePoint(1, 1, RelativeUnit.Relative),
+                    GradientStops = new List<GradientStop>
+                    {
+                        new GradientStop(Color.FromUInt32(0xffffffff), 0),
+                        new GradientStop(Color.FromUInt32(0x00ffffff), 1)
+                    }
+                },
+                Width = 76,
+                Height = 76,
+                Children = new Avalonia.Controls.Controls
+                {
+                    new Path
+                    {
+                        Width = 32,
+                        Height = 40,
+                        [Canvas.LeftProperty] = 23,
+                        [Canvas.TopProperty] = 18,
+                        Stretch = Stretch.Fill,
+                        Fill = Brushes.Red,
+                        Data = StreamGeometry.Parse("F1 M 27,18L 23,26L 33,30L 24,38L 33,46L 23,50L 27,58L 45,58L 55,38L 45,18L 27,18 Z")
+                    }
+                }
+            };
+
+            RenderToFile(target);
+            CompareImages();
+        }
+    }
+}
diff --git a/tests/TestFiles/Cairo/OpacityMask/Opacity_Mask_Masks_Element.expected.png b/tests/TestFiles/Cairo/OpacityMask/Opacity_Mask_Masks_Element.expected.png
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