Add tests for reading webp metadata, fix some test images with metadata

src/ImageSharp/Formats/WebP/WebPDecoderCore.cs

@@ -215,12 +215,19 @@ namespace SixLabors.ImageSharp.Formats.WebP
                 if (chunkType is WebPChunkType.Iccp)
                 {
                     uint iccpChunkSize = this.ReadChunkSize();
-                    var iccpData = new byte[iccpChunkSize];
-                    this.currentStream.Read(iccpData, 0, (int)iccpChunkSize);
-                    var profile = new IccProfile(iccpData);
-                    if (profile.CheckIsValid())
+                    if (!this.IgnoreMetadata)
                     {
-                        this.Metadata.IccProfile = profile;
+                        var iccpData = new byte[iccpChunkSize];
+                        this.currentStream.Read(iccpData, 0, (int)iccpChunkSize);
+                        var profile = new IccProfile(iccpData);
+                        if (profile.CheckIsValid())
+                        {
+                            this.Metadata.IccProfile = profile;
+                        }
+                    }
+                    else
+                    {
+                        this.currentStream.Skip((int)iccpChunkSize);
                     }
                 }
             }

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

@@ -10,7 +10,6 @@ using SixLabors.ImageSharp.Tests.TestUtilities.ReferenceCodecs;
 using Xunit;
 
 // ReSharper disable InconsistentNaming
-
 namespace SixLabors.ImageSharp.Tests.Formats.WebP
 {
     using static SixLabors.ImageSharp.Tests.TestImages.WebP;

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

@@ -1,21 +0,0 @@
-using System;
-using SixLabors.ImageSharp.Formats.Bmp;
-using Xunit;
-
-namespace SixLabors.ImageSharp.Tests.Formats.WebP
-{
-    public class WebPFileHeaderTests
-    {
-        [Fact]
-        public void TestWrite()
-        {
-            var header = new BmpFileHeader(1, 2, 3, 4);
-
-            var buffer = new byte[14];
-
-            header.WriteTo(buffer);
-
-            Assert.Equal("AQACAAAAAwAAAAQAAAA=", Convert.ToBase64String(buffer));
-        }
-    }
-}

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

@@ -0,0 +1,57 @@
+// Copyright (c) Six Labors and contributors.
+// Licensed under the Apache License, Version 2.0.
+
+using SixLabors.ImageSharp.Formats.WebP;
+using SixLabors.ImageSharp.PixelFormats;
+using Xunit;
+
+// ReSharper disable InconsistentNaming
+namespace SixLabors.ImageSharp.Tests.Formats.WebP
+{
+    public class WebPMetadataTests
+    {
+        [Theory]
+        [WithFile(TestImages.WebP.Lossless.WithExif, PixelTypes.Rgba32, false)]
+        [WithFile(TestImages.WebP.Lossy.WithExif, PixelTypes.Rgba32, true)]
+        public void IgnoreMetadata_ControlsWhetherExifIsParsed<TPixel>(TestImageProvider<TPixel> provider, bool ignoreMetadata)
+            where TPixel : unmanaged, IPixel<TPixel>
+        {
+            var decoder = new WebPDecoder { IgnoreMetadata = ignoreMetadata };
+
+            using (Image<TPixel> image = provider.GetImage(decoder))
+            {
+                if (ignoreMetadata)
+                {
+                    Assert.Null(image.Metadata.ExifProfile);
+                }
+                else
+                {
+                    Assert.NotNull(image.Metadata.ExifProfile);
+                    Assert.NotEmpty(image.Metadata.ExifProfile.Values);
+                }
+            }
+        }
+
+        [Theory]
+        [WithFile(TestImages.WebP.Lossless.WithIccp, PixelTypes.Rgba32, false)]
+        [WithFile(TestImages.WebP.Lossy.WithIccp, PixelTypes.Rgba32, true)]
+        public void IgnoreMetadata_ControlsWhetherIccpIsParsed<TPixel>(TestImageProvider<TPixel> provider, bool ignoreMetadata)
+            where TPixel : unmanaged, IPixel<TPixel>
+        {
+            var decoder = new WebPDecoder { IgnoreMetadata = ignoreMetadata };
+
+            using (Image<TPixel> image = provider.GetImage(decoder))
+            {
+                if (ignoreMetadata)
+                {
+                    Assert.Null(image.Metadata.IccProfile);
+                }
+                else
+                {
+                    Assert.NotNull(image.Metadata.IccProfile);
+                    Assert.NotEmpty(image.Metadata.IccProfile.Entries);
+                }
+            }
+        }
+    }
+}

tests/ImageSharp.Tests/TestImages.cs

@@ -390,8 +390,8 @@ namespace SixLabors.ImageSharp.Tests
             public const string Bit32Rle = "Tga/targa_32bit_rle.tga";
             public const string Bit16Pal = "Tga/targa_16bit_pal.tga";
             public const string Bit24Pal = "Tga/targa_24bit_pal.tga";
-		}
-		
+        }
+
         public static class WebP
         {
             public static class Animated
@@ -404,6 +404,8 @@ namespace SixLabors.ImageSharp.Tests
 
             public static class Lossless
             {
+                public const string WithExif = "WebP/exif_lossless.webp";
+                public const string WithIccp = "WebP/iccp_lossless.webp";
                 public const string NoTransform1 = "WebP/lossless_vec_1_0.webp";
                 public const string NoTransform2 = "WebP/lossless_vec_2_0.webp";
                 public const string GreenTransform1 = "WebP/lossless1.webp";
@@ -452,6 +454,9 @@ namespace SixLabors.ImageSharp.Tests
 
             public static class Lossy
             {
+                public const string WithExif = "WebP/exif_lossy.webp";
+                public const string WithIccp = "WebP/iccp_lossy.webp";
+
                 // Lossy images without macroblock filtering.
                 public const string Bike = "WebP/bike_lossy.webp";
                 public const string NoFilter01 = "WebP/vp80-01-intra-1400.webp";
@@ -469,7 +474,7 @@ namespace SixLabors.ImageSharp.Tests
                 public const string SimpleFilter05 = "WebP/test-nostrong.webp";
 
                 // Lossy images with a complex filter.
-                public const string IccpComplexFilter = "WebP/lossy_iccp.webp";
+                public const string IccpComplexFilter = "WebP/iccp_lossy.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";