Add more webp lossy test cases

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

@@ -66,6 +66,9 @@ namespace SixLabors.ImageSharp.Tests.Formats.WebP
         [Theory]
         [WithFile(Lossy.SimpleFilter01, PixelTypes.Rgba32)]
         [WithFile(Lossy.SimpleFilter02, PixelTypes.Rgba32)]
+        [WithFile(Lossy.SimpleFilter03, PixelTypes.Rgba32)]
+        [WithFile(Lossy.SimpleFilter04, PixelTypes.Rgba32)]
+        [WithFile(Lossy.SimpleFilter05, PixelTypes.Rgba32)]
         public void WebpDecoder_CanDecode_Lossy_WithSimpleFilter<TPixel>(TestImageProvider<TPixel> provider)
             where TPixel : struct, IPixel<TPixel>
         {
@@ -76,12 +79,32 @@ namespace SixLabors.ImageSharp.Tests.Formats.WebP
             }
         }
 
+        [Theory]
+        [WithFile(Lossy.Small01, PixelTypes.Rgba32)]
+        [WithFile(Lossy.Small02, PixelTypes.Rgba32)]
+        [WithFile(Lossy.Small03, PixelTypes.Rgba32)]
+        [WithFile(Lossy.Small04, PixelTypes.Rgba32)]
+        public void WebpDecoder_CanDecode_Lossy_VerySmall<TPixel>(TestImageProvider<TPixel> provider)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            using (Image<TPixel> image = provider.GetImage(WebpDecoder))
+            {
+                image.DebugSave(provider);
+                image.CompareToOriginal(provider, ReferenceDecoder);
+            }
+        }
+
         [Theory]
         [WithFile(Lossy.IccpComplexFilter, PixelTypes.Rgba32)]
         [WithFile(Lossy.VeryShort, PixelTypes.Rgba32)]
         [WithFile(Lossy.BikeComplexFilter, PixelTypes.Rgba32)]
         [WithFile(Lossy.ComplexFilter01, PixelTypes.Rgba32)]
         [WithFile(Lossy.ComplexFilter02, PixelTypes.Rgba32)]
+        [WithFile(Lossy.ComplexFilter03, PixelTypes.Rgba32)]
+        [WithFile(Lossy.ComplexFilter04, PixelTypes.Rgba32)]
+        [WithFile(Lossy.ComplexFilter05, PixelTypes.Rgba32)]
+        [WithFile(Lossy.ComplexFilter06, PixelTypes.Rgba32)]
+        [WithFile(Lossy.ComplexFilter07, PixelTypes.Rgba32)]
         public void WebpDecoder_CanDecode_Lossy_WithComplexFilter<TPixel>(TestImageProvider<TPixel> provider)
             where TPixel : struct, IPixel<TPixel>
         {

tests/ImageSharp.Tests/TestImages.cs

@@ -443,13 +443,29 @@ namespace SixLabors.ImageSharp.Tests
                 // Lossy images with a simple filter.
                 public const string SimpleFilter01 = "WebP/segment01.webp";
                 public const string SimpleFilter02 = "WebP/segment02.webp";
+                public const string SimpleFilter03 = "WebP/vp80-00-comprehensive-003.webp";
+                public const string SimpleFilter04 = "WebP/vp80-00-comprehensive-007.webp";
+                public const string SimpleFilter05 = "WebP/test-nostrong.webp";
 
-                // Losyy images with a complex filter.
+                // Lossy images with a complex filter.
                 public const string IccpComplexFilter = "WebP/lossy_iccp.webp";
                 public const string VeryShort = "WebP/very_short.webp";
                 public const string BikeComplexFilter = "WebP/bike_lossy_complex_filter.webp";
                 public const string ComplexFilter01 = "WebP/vp80-02-inter-1418.webp";
                 public const string ComplexFilter02 = "WebP/vp80-02-inter-1418.webp";
+                public const string ComplexFilter03 = "WebP/vp80-00-comprehensive-002.webp";
+                public const string ComplexFilter04 = "WebP/vp80-00-comprehensive-006.webp";
+                public const string ComplexFilter05 = "WebP/vp80-00-comprehensive-009.webp";
+                public const string ComplexFilter06 = "WebP/vp80-00-comprehensive-012.webp";
+                public const string ComplexFilter07 = "WebP/vp80-00-comprehensive-015.webp";
+                public const string ComplexFilter08 = "WebP/vp80-00-comprehensive-016.webp";
+                public const string ComplexFilter09 = "WebP/vp80-00-comprehensive-017.webp";
+
+                // Very small images (all with complex filter).
+                public const string Small01 = "WebP/small_13x1.webp";
+                public const string Small02 = "WebP/small_1x1.webp";
+                public const string Small03 = "WebP/small_1x13.webp";
+                public const string Small04 = "WebP/small_31x13.webp";
 
                 // Lossy images with an alpha channel.
                 public const string Alpha1 = "WebP/lossy_alpha1.webp";
@@ -457,6 +473,7 @@ namespace SixLabors.ImageSharp.Tests
                 public const string Alpha3 = "WebP/lossy_alpha3.webp";
                 public const string Alpha4 = "WebP/lossy_alpha4.webp";
                 public const string AlphaNoCompression = "WebP/alpha_no_compression.webp";
+
             }
 
             public static readonly string[] All =