public void GetImageDepth_ReturnsCorrectImageDepth()
{
Assert.Equal(ImageDepth.Bitonal, AttributeHelpers.GetImageDepth("1"));
Assert.Equal(ImageDepth.Grayscale, AttributeHelpers.GetImageDepth("8"));
Assert.Equal(ImageDepth.Color, AttributeHelpers.GetImageDepth("24"));
Assert.Null(AttributeHelpers.GetImageDepth(""));
Assert.Null(AttributeHelpers.GetImageDepth(null));
Assert.Null(AttributeHelpers.GetImageDepth("SOME_RANDOM_STRING"));
}