Add failing test

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

@@ -516,6 +516,21 @@ public class WebpEncoderTests
         image.VerifyEncoder(provider, "webp", string.Empty, encoder);
     }
 
+    // https://github.com/SixLabors/ImageSharp/issues/2801
+    [Theory]
+    [WithFile(Lossy.Issue2801, PixelTypes.Rgba32)]
+    public void WebpDecoder_CanDecode_Issue2801<TPixel>(TestImageProvider<TPixel> provider)
+        where TPixel : unmanaged, IPixel<TPixel>
+    {
+        WebpEncoder encoder = new()
+        {
+        };
+
+        using Image<TPixel> image = provider.GetImage();
+        image.DebugSave(provider);
+        image.VerifyEncoder(provider, "webp", string.Empty, encoder);
+    }
+
     public static void RunEncodeLossy_WithPeakImage()
     {
         TestImageProvider<Rgba32> provider = TestImageProvider<Rgba32>.File(TestImageLossyFullPath);

tests/ImageSharp.Tests/TestImages.cs

@@ -827,6 +827,7 @@ public static class TestImages
             public const string Issue2257 = "Webp/issues/Issue2257.webp";
             public const string Issue2670 = "Webp/issues/Issue2670.webp";
             public const string Issue2763 = "Webp/issues/Issue2763.png";
+            public const string Issue2801 = "Webp/issues/Issue2801.webp";
         }
     }
 

tests/Images/Input/Webp/issues/Issue2801.webp

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e90a0d853ddf70d823d8da44eb6c57081e955b1fb7f436a1fd88ca5e5c75a003
+size 261212