renaming, add fax3 test file

tests/ImageSharp.Tests/Formats/Tiff/BigTiffDecoderTests.cs

@@ -31,6 +31,7 @@ namespace SixLabors.ImageSharp.Tests.Formats.Tiff
         [WithFile(BigTIFFSubIFD8, PixelTypes.Rgba32)]
         [WithFile(Indexed4_Deflate, PixelTypes.Rgba32)]
         [WithFile(Indexed8_LZW, PixelTypes.Rgba32)]
+        [WithFile(MinIsBlack_Fax3, PixelTypes.Rgba32)]
         public void TiffDecoder_CanDecode<TPixel>(TestImageProvider<TPixel> provider)
             where TPixel : unmanaged, IPixel<TPixel> => TestTiffDecoder(provider);
 
@@ -40,8 +41,8 @@ namespace SixLabors.ImageSharp.Tests.Formats.Tiff
             where TPixel : unmanaged, IPixel<TPixel> => Assert.Throws<NotSupportedException>(() => provider.GetImage(TiffDecoder));
 
         [Theory]
-        [WithFile(MinInWhite_RLE, PixelTypes.Rgba32)]
-        [WithFile(MinInBlack_RLE, PixelTypes.Rgba32)]
+        [WithFile(MinIsWhite_RLE, PixelTypes.Rgba32)]
+        [WithFile(MinIsBlack_RLE, PixelTypes.Rgba32)]
         public void ProblemFiles<TPixel>(TestImageProvider<TPixel> provider)
             where TPixel : unmanaged, IPixel<TPixel> => Assert.Throws<ImageDifferenceIsOverThresholdException>(() => TestTiffDecoder(provider));
 
@@ -55,8 +56,9 @@ namespace SixLabors.ImageSharp.Tests.Formats.Tiff
         [InlineData(BigTIFFSubIFD8, 24, 64, 64, 96, 96, PixelResolutionUnit.PixelsPerInch)]
         [InlineData(Indexed4_Deflate, 4, 64, 64, 96, 96, PixelResolutionUnit.PixelsPerInch)]
         [InlineData(Indexed8_LZW, 8, 64, 64, 96, 96, PixelResolutionUnit.PixelsPerInch)]
-        [InlineData(MinInWhite_RLE, 1, 32, 32, 96, 96, PixelResolutionUnit.PixelsPerInch)]
-        [InlineData(MinInBlack_RLE, 1, 32, 32, 96, 96, PixelResolutionUnit.PixelsPerInch)]
+        [InlineData(MinIsWhite_RLE, 1, 32, 32, 96, 96, PixelResolutionUnit.PixelsPerInch)]
+        [InlineData(MinIsBlack_RLE, 1, 32, 32, 96, 96, PixelResolutionUnit.PixelsPerInch)]
+        [InlineData(MinIsBlack_Fax3, 1, 32, 32, 96, 96, PixelResolutionUnit.PixelsPerInch)]
         public void Identify(string imagePath, int expectedPixelSize, int expectedWidth, int expectedHeight, double expectedHResolution, double expectedVResolution, PixelResolutionUnit expectedResolutionUnit)
         {
             var testFile = TestFile.Create(imagePath);

tests/ImageSharp.Tests/TestImages.cs

@@ -689,8 +689,9 @@ namespace SixLabors.ImageSharp.Tests
 
             public const string Indexed4_Deflate = Base + "BigTIFF_Indexed4_Deflate.tif";
             public const string Indexed8_LZW = Base + "BigTIFF_Indexed8_LZW.tif";
-            public const string MinInWhite_RLE = Base + "BigTIFF_MinInWhite_RLE.tif";
-            public const string MinInBlack_RLE = Base + "BigTIFF_MinInBlack_RLE.tif";
+            public const string MinIsWhite_RLE = Base + "BigTIFF_MinIsWhite_RLE.tif";
+            public const string MinIsBlack_RLE = Base + "BigTIFF_MinIsBlack_RLE.tif";
+            public const string MinIsBlack_Fax3 = Base + "BigTIFF_MinIsBlack_Fax3.tif";
         }
     }
 }

tests/Images/Input/Tiff/BigTiff/BigTIFF_MinIsBlack_Fax3.tiff

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3853a4850a023bce431bc224145f47e095e9910cddce9ba5fcaf496c9d385e04
+size 564