Add unit test for issue #1014

tests/ImageSharp.Tests/Formats/Png/PngDecoderTests.cs

@@ -75,6 +75,13 @@ namespace SixLabors.ImageSharp.Tests.Formats.Png
                 TestImages.Png.GrayAlpha8BitInterlaced
             };
 
+        public static readonly string[] TestImagesIssue1014 =
+        {
+            TestImages.Png.Issue1014_1, TestImages.Png.Issue1014_2,
+            TestImages.Png.Issue1014_3, TestImages.Png.Issue1014_4,
+            TestImages.Png.Issue1014_5, TestImages.Png.Issue1014_6
+        };
+
         [Theory]
         [WithFileCollection(nameof(CommonTestImages), PixelTypes.Rgba32)]
         public void Decode<TPixel>(TestImageProvider<TPixel> provider)
@@ -199,5 +206,22 @@ namespace SixLabors.ImageSharp.Tests.Formats.Png
                 Assert.Equal(expectedPixelSize, Image.Identify(stream)?.PixelType?.BitsPerPixel);
             }
         }
+
+        [Theory]
+        [WithFileCollection(nameof(TestImagesIssue1014), PixelTypes.Rgba32)]
+        public void Issue1014<TPixel>(TestImageProvider<TPixel> provider)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            System.Exception ex = Record.Exception(
+                () =>
+                {
+                    using (Image<TPixel> image = provider.GetImage(new PngDecoder()))
+                    {
+                        image.DebugSave(provider);
+                        // TODO: compare to expected output
+                    }
+                });
+            Assert.Null(ex);
+        }
     }
 }

tests/ImageSharp.Tests/TestImages.cs

@@ -82,6 +82,14 @@ namespace SixLabors.ImageSharp.Tests
             public const string Ducky = "Png/ducky.png";
             public const string Rainbow = "Png/rainbow.png";
 
+            // Issue 1014: https://github.com/SixLabors/ImageSharp/issues/1014
+            public const string Issue1014_1 = "Png/issues/Issue_1014_1.png";
+            public const string Issue1014_2 = "Png/issues/Issue_1014_2.png";
+            public const string Issue1014_3 = "Png/issues/Issue_1014_3.png";
+            public const string Issue1014_4 = "Png/issues/Issue_1014_4.png";
+            public const string Issue1014_5 = "Png/issues/Issue_1014_5.png";
+            public const string Issue1014_6 = "Png/issues/Issue_1014_6.png";
+
             public static class Bad
             {
                 // Odd chunk lengths

tests/Images/Input/Png/issues/Issue_1014_1.png

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e986d0ff909fc92b0f325c6012ca4123674b239c54647bbdf3fc0c7ace3e4327
+size 3965

tests/Images/Input/Png/issues/Issue_1014_2.png

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e042b3aa6c17db70a9fe7fda4fae1c90388d32480ac44e9f87341279c845fd11
+size 6626

tests/Images/Input/Png/issues/Issue_1014_3.png

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6ca6190682c99ec1c00fe2bac7fee86902bcf8a2db43a781452bf137eb1b962a
+size 4157

tests/Images/Input/Png/issues/Issue_1014_4.png

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:03c6ee008225ac18f2966842772d5afa64e318f41b552c3d63d1a9fdd3544eff
+size 3328

tests/Images/Input/Png/issues/Issue_1014_5.png

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1163cd03933f2b23e1ae27baa848a5c2d3f41f0b3457a33dd9523c40e610076b
+size 4085

tests/Images/Input/Png/issues/Issue_1014_6.png

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c60f7be42794764f970149dd967bcd15c2f7f783b82a3edf528e7556eeb6c806
+size 2114