public void Encode_UseCompression_WhenTextIsGreaterThenThreshold_Works <TPixel>(TestImageProvider <TPixel> provider)
where TPixel : unmanaged, IPixel <TPixel>
{
var decoder = new PngDecoder();
using (Image <TPixel> input = provider.GetImage(decoder))
using (var memoryStream = new MemoryStream())
{
// This will be a zTXt chunk.
var expectedText = new PngTextData("large-text", new string('c', 100), string.Empty, string.Empty);
// This will be a iTXt chunk.
var expectedTextNoneLatin = new PngTextData("large-text-non-latin", new string('Ф', 100), "language-tag", "translated-keyword");
PngMetadata inputMetadata = input.Metadata.GetFormatMetadata(PngFormat.Instance);
inputMetadata.TextData.Add(expectedText);
inputMetadata.TextData.Add(expectedTextNoneLatin);
input.Save(memoryStream, new PngEncoder
{
TextCompressionThreshold = 50
});
memoryStream.Position = 0;
using (Image <Rgba32> image = decoder.Decode <Rgba32>(Configuration.Default, memoryStream))
{
PngMetadata meta = image.Metadata.GetFormatMetadata(PngFormat.Instance);
Assert.Contains(meta.TextData, m => m.Equals(expectedText));
Assert.Contains(meta.TextData, m => m.Equals(expectedTextNoneLatin));
}
}
}
public void AreEqual()
{
var property1 = new PngTextData("Foo", "Bar", "foo", "bar");
var property2 = new PngTextData("Foo", "Bar", "foo", "bar");
Assert.Equal(property1, property2);
Assert.True(property1 == property2);
}
public void AreNotEqual()
{
var property1 = new PngTextData("Foo", "Bar", "foo", "bar");
var property2 = new PngTextData("Foo", "Foo", string.Empty, string.Empty);
var property3 = new PngTextData("Bar", "Bar", "unit", "test");
var property4 = new PngTextData("Foo", null, "test", "case");
Assert.NotEqual(property1, property2);
Assert.True(property1 != property2);
Assert.NotEqual(property1, property3);
Assert.NotEqual(property1, property4);
}
public void ConstructorAssignsProperties()
{
var property = new PngTextData("Foo", null, "unit", "test");
Assert.Equal("Foo", property.Keyword);
Assert.Null(property.Value);
Assert.Equal("unit", property.LanguageTag);
Assert.Equal("test", property.TranslatedKeyword);
property = new PngTextData("Foo", string.Empty, string.Empty, null);
Assert.Equal("Foo", property.Keyword);
Assert.Equal(string.Empty, property.Value);
Assert.Equal(string.Empty, property.LanguageTag);
Assert.Null(property.TranslatedKeyword);
}
