More tests

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

@@ -79,6 +79,7 @@ namespace SixLabors.ImageSharp.Tests
             TestImages.Png.VimImage2,
 
             TestImages.Png.Rgb24BppTrans,
+            TestImages.Png.GrayAlpha8Bit
         };
 
         public static readonly string[] TestImages48Bpp =
@@ -101,7 +102,7 @@ namespace SixLabors.ImageSharp.Tests
         public static readonly string[] TestImagesGrayAlpha16Bit =
         {
             TestImages.Png.GrayAlpha16Bit,
-            TestImages.Png.GrayTrns16Bit
+            TestImages.Png.GrayTrns16BitInterlaced
         };
 
         // This is a workaround for Mono-s decoder being incompatible with ours and GDI+.
@@ -115,6 +116,8 @@ namespace SixLabors.ImageSharp.Tests
             TestImages.Png.Bad.ChunkLength1,
             TestImages.Png.VersioningImage1,
             TestImages.Png.Banner7Adam7InterlaceMode,
+            TestImages.Png.GrayTrns16BitInterlaced,
+            TestImages.Png.Rgb48BppInterlaced
         };
 
         private static bool SkipVerification(ITestImageProvider provider)

tests/ImageSharp.Tests/PixelFormats/Rgb48Tests.cs

@@ -103,6 +103,21 @@ namespace SixLabors.ImageSharp.Tests.PixelFormats
             Assert.Equal(expected, actual);
         }
 
+        [Fact]
+        public void Rgb48_ToArgb32()
+        {
+            // arrange
+            var rgba48 = new Rgb48(0.08f, 0.15f, 0.30f);
+            var actual = default(Argb32);
+            var expected = new Argb32(20, 38, 76, 255);
+
+            // act
+            rgba48.ToArgb32(ref actual);
+
+            // assert
+            Assert.Equal(expected, actual);
+        }
+
         [Fact]
         public void Rgba64_ToBgr24()
         {

tests/ImageSharp.Tests/PixelFormats/Rgba64Tests.cs

@@ -105,6 +105,21 @@ namespace SixLabors.ImageSharp.Tests.PixelFormats
             Assert.Equal(expected, actual);
         }
 
+        [Fact]
+        public void Rgba64_ToArgb32()
+        {
+            // arrange
+            var rgba64 = new Rgba64(0.08f, 0.15f, 0.30f, 0.45f);
+            var actual = default(Argb32);
+            var expected = new Argb32(20, 38, 76, 115);
+
+            // act
+            rgba64.ToArgb32(ref actual);
+
+            // assert
+            Assert.Equal(expected, actual);
+        }
+
         [Fact]
         public void Rgba64_ToBgr24()
         {
@@ -155,7 +170,7 @@ namespace SixLabors.ImageSharp.Tests.PixelFormats
         public void Rgb48_PackFromRgb48_ToRgb48()
         {
             // arrange
-            var input = default(Rgb48);
+            var input = default(Rgba64);
             var actual = default(Rgb48);
             var expected = new Rgb48(65535, 0, 65535);
 

tests/ImageSharp.Tests/TestImages.cs

@@ -28,8 +28,9 @@ namespace SixLabors.ImageSharp.Tests
             public const string Bpp1 = "Png/bpp1.png";
             public const string Gray4Bpp = "Png/gray_4bpp.png";
             public const string Gray16Bit = "Png/gray-16.png";
+            public const string GrayAlpha8Bit = "Png/gray-alpha-8.png";
             public const string GrayAlpha16Bit = "Png/gray-alpha-16.png";
-            public const string GrayTrns16Bit = "Png/gray-16-tRNS.png";
+            public const string GrayTrns16BitInterlaced = "Png/gray-16-tRNS-interlaced.png";
             public const string Rgb24BppTrans = "Png/rgb-8-tRNS.png";
             public const string Rgb48Bpp = "Png/rgb-48bpp.png";
             public const string Rgb48BppInterlaced = "Png/rgb-48bpp-interlaced.png";

tests/Images/External

@@ -1 +1 @@
-Subproject commit 94cc43a65e304aa312bea9d098206086095e6dff
+Subproject commit 6fcee2ccd5e8bac98a0290b467ad86bb02d00b6c