Split up intrinsics tests, add guard if hw intrinsics are present

tests/ImageSharp.Tests/Formats/WebP/LosslessUtilsTests.cs

@@ -10,10 +10,7 @@ namespace SixLabors.ImageSharp.Tests.Formats.WebP
     [Trait("Format", "Webp")]
     public class LosslessUtilsTests
     {
-        [Fact]
+        private static void RunSubstractGreenTest()
-        public void SubtractGreen_Works()
-        {
-            static void RunTest()
         {
             uint[] pixelData =
             {
@@ -42,16 +39,7 @@ namespace SixLabors.ImageSharp.Tests.Formats.WebP
             Assert.Equal(expectedOutput, pixelData);
         }
 
-            FeatureTestRunner.RunWithHwIntrinsicsFeature(RunTest, HwIntrinsics.AllowAll);
+        private static void RunAddGreenToBlueAndRedTest()
-            FeatureTestRunner.RunWithHwIntrinsicsFeature(RunTest, HwIntrinsics.DisableAVX);
-            FeatureTestRunner.RunWithHwIntrinsicsFeature(RunTest, HwIntrinsics.DisableAVX | HwIntrinsics.DisableSSE2);
-            FeatureTestRunner.RunWithHwIntrinsicsFeature(RunTest, HwIntrinsics.DisableAVX | HwIntrinsics.DisableSSE2 | HwIntrinsics.DisableSSSE3);
-        }
-
-        [Fact]
-        public void AddGreenToBlueAndRed_Works()
-        {
-            static void RunTest()
         {
             uint[] pixelData =
             {
@@ -80,10 +68,54 @@ namespace SixLabors.ImageSharp.Tests.Formats.WebP
             Assert.Equal(expectedOutput, pixelData);
         }
 
-            FeatureTestRunner.RunWithHwIntrinsicsFeature(RunTest, HwIntrinsics.AllowAll);
+        [Fact]
-            FeatureTestRunner.RunWithHwIntrinsicsFeature(RunTest, HwIntrinsics.DisableAVX);
+        public void SubtractGreen_Works()
-            FeatureTestRunner.RunWithHwIntrinsicsFeature(RunTest, HwIntrinsics.DisableAVX | HwIntrinsics.DisableSSE2);
+        {
-            FeatureTestRunner.RunWithHwIntrinsicsFeature(RunTest, HwIntrinsics.DisableAVX | HwIntrinsics.DisableSSE2 | HwIntrinsics.DisableSSSE3);
+            RunSubstractGreenTest();
+        }
+
+        [Fact]
+        public void AddGreenToBlueAndRed_Works()
+        {
+            RunAddGreenToBlueAndRedTest();
+        }
+
+#if SUPPORTS_RUNTIME_INTRINSICS
+        [Fact]
+        public void SubtractGreen_WithHardwareIntrinsics_Works()
+        {
+            FeatureTestRunner.RunWithHwIntrinsicsFeature(RunSubstractGreenTest, HwIntrinsics.AllowAll);
+        }
+
+        [Fact]
+        public void SubtractGreen_WithoutAvx_Works()
+        {
+            FeatureTestRunner.RunWithHwIntrinsicsFeature(RunSubstractGreenTest, HwIntrinsics.DisableAVX);
+        }
+
+        [Fact]
+        public void SubtractGreen_WithoutAvxOrSSSE3_Works()
+        {
+            FeatureTestRunner.RunWithHwIntrinsicsFeature(RunSubstractGreenTest, HwIntrinsics.DisableAVX | HwIntrinsics.DisableSSSE3);
+        }
+
+        [Fact]
+        public void AddGreenToBlueAndRed_WithHardwareIntrinsics_Works()
+        {
+            FeatureTestRunner.RunWithHwIntrinsicsFeature(RunAddGreenToBlueAndRedTest, HwIntrinsics.AllowAll);
+        }
+
+        [Fact]
+        public void AddGreenToBlueAndRed_WithoutAvx_Works()
+        {
+            FeatureTestRunner.RunWithHwIntrinsicsFeature(RunAddGreenToBlueAndRedTest, HwIntrinsics.DisableAVX);
+        }
+
+        [Fact]
+        public void AddGreenToBlueAndRed_WithoutAvxOrSSSE3_Works()
+        {
+            FeatureTestRunner.RunWithHwIntrinsicsFeature(RunAddGreenToBlueAndRedTest, HwIntrinsics.DisableAVX | HwIntrinsics.DisableSSE2 | HwIntrinsics.DisableSSSE3);
         }
+#endif
     }
 }