public void GetBackgroundColorDescription()
{
PngDirectory directory = new PngDirectory(PngChunkType.bKGD);
PngDescriptor descriptor = new PngDescriptor(directory);
directory.Set(PngDirectory.TagBackgroundColor, new byte[] { 52 });
Assert.Equal("Palette Index 52", descriptor.GetBackgroundColorDescription());
Assert.Equal("Palette Index 52", directory.GetDescription(PngDirectory.TagBackgroundColor));
directory.Set(PngDirectory.TagBackgroundColor, new byte[] { 0, 52 });
Assert.Equal("Greyscale Level 52", descriptor.GetBackgroundColorDescription());
Assert.Equal("Greyscale Level 52", directory.GetDescription(PngDirectory.TagBackgroundColor));
directory.Set(PngDirectory.TagBackgroundColor, new byte[] { 0, 50, 0, 51, 0, 52 });
Assert.Equal("R 50, G 51, B 52", descriptor.GetBackgroundColorDescription());
Assert.Equal("R 50, G 51, B 52", directory.GetDescription(PngDirectory.TagBackgroundColor));
}
public void GetTextualDataDescription()
{
var latin1Encoding = Encoding.GetEncoding("iso-8859-1"); // Latin-1
var textPairs = new List <KeyValuePair>();
StringValue value = new StringValue(latin1Encoding.GetBytes("value"), latin1Encoding);
textPairs.Add(new KeyValuePair("keyword", value));
PngDirectory directory = new PngDirectory(PngChunkType.tEXt);
PngDescriptor descriptor = new PngDescriptor(directory);
directory.Set(PngDirectory.TagTextualData, textPairs);
Assert.Equal("keyword: value", descriptor.GetTextualDataDescription());
Assert.Equal("keyword: value", directory.GetDescription(PngDirectory.TagTextualData));
directory = new PngDirectory(PngChunkType.zTXt);
descriptor = new PngDescriptor(directory);
directory.Set(PngDirectory.TagTextualData, textPairs);
Assert.Equal("keyword: value", descriptor.GetTextualDataDescription());
Assert.Equal("keyword: value", directory.GetDescription(PngDirectory.TagTextualData));
directory = new PngDirectory(PngChunkType.iTXt);
descriptor = new PngDescriptor(directory);
directory.Set(PngDirectory.TagTextualData, textPairs);
Assert.Equal("keyword: value", descriptor.GetTextualDataDescription());
Assert.Equal("keyword: value", directory.GetDescription(PngDirectory.TagTextualData));
}
public void GetUnitSpecifierDescription()
{
PngDirectory directory = new PngDirectory(PngChunkType.pHYs);
PngDescriptor descriptor = new PngDescriptor(directory);
directory.Set(PngDirectory.TagUnitSpecifier, 1);
Assert.Equal("Metres", descriptor.GetUnitSpecifierDescription());
Assert.Equal("Metres", directory.GetDescription(PngDirectory.TagUnitSpecifier));
}
public void GetIsSrgbColorSpaceDescription()
{
PngDirectory directory = new PngDirectory(PngChunkType.sRGB);
PngDescriptor descriptor = new PngDescriptor(directory);
directory.Set(PngDirectory.TagSrgbRenderingIntent, 0);
Assert.Equal("Perceptual", descriptor.GetIsSrgbColorSpaceDescription());
Assert.Equal("Perceptual", directory.GetDescription(PngDirectory.TagSrgbRenderingIntent));
}
public void GetPaletteHasTransparencyDescription()
{
PngDirectory directory = new PngDirectory(PngChunkType.tRNS);
PngDescriptor descriptor = new PngDescriptor(directory);
directory.Set(PngDirectory.TagPaletteHasTransparency, 1);
Assert.Equal("Yes", descriptor.GetPaletteHasTransparencyDescription());
Assert.Equal("Yes", directory.GetDescription(PngDirectory.TagPaletteHasTransparency));
}
public void GetInterlaceMethodDescription()
{
PngDirectory directory = new PngDirectory(PngChunkType.IHDR);
PngDescriptor descriptor = new PngDescriptor(directory);
directory.Set(PngDirectory.TagInterlaceMethod, 1);
Assert.Equal("Adam7 Interlace", descriptor.GetInterlaceMethodDescription());
Assert.Equal("Adam7 Interlace", directory.GetDescription(PngDirectory.TagInterlaceMethod));
}
public void GetFilterMethodDescription()
{
PngDirectory directory = new PngDirectory(PngChunkType.IHDR);
PngDescriptor descriptor = new PngDescriptor(directory);
directory.Set(PngDirectory.TagFilterMethod, 0);
Assert.Equal("Adaptive", descriptor.GetFilterMethodDescription());
Assert.Equal("Adaptive", directory.GetDescription(PngDirectory.TagFilterMethod));
}
public void GetCompressionTypeDescription()
{
PngDirectory directory = new PngDirectory(PngChunkType.IHDR);
PngDescriptor descriptor = new PngDescriptor(directory);
directory.Set(PngDirectory.TagCompressionType, 0);
Assert.Equal("Deflate", descriptor.GetCompressionTypeDescription());
Assert.Equal("Deflate", directory.GetDescription(PngDirectory.TagCompressionType));
}
public void GetColorTypeDescription()
{
PngDirectory directory = new PngDirectory(PngChunkType.IHDR);
PngDescriptor descriptor = new PngDescriptor(directory);
directory.Set(PngDirectory.TagColorType, 6);
Assert.Equal("True Color with Alpha", descriptor.GetColorTypeDescription());
Assert.Equal("True Color with Alpha", directory.GetDescription(PngDirectory.TagColorType));
}
public void ParsePngDirectory_ValidDirectory_AllMetadata()
{
var pngDirectory = new PngDirectory(PngChunkType.bKGD);
var photo = new Photo("");
var height = 32;
var width = 32;
pngDirectory.Set(PngDirectory.TagImageHeight, height);
pngDirectory.Set(PngDirectory.TagImageWidth, width);
pngDirectory.Parse(photo);
var actualHeight = photo.Height;
var actualWidth = photo.Width;
Assert.Equal(height, actualHeight);
Assert.Equal(width, actualWidth);
}