public void GetImageFormat_ReturnsCorrectImageFormat()
{
Assert.Equal(ImageFormat.JPEG, AttributeHelpers.GetImageFormat("JPEG"));
Assert.Equal(ImageFormat.TIFF, AttributeHelpers.GetImageFormat("TIFF"));
Assert.Equal(ImageFormat.RAW, AttributeHelpers.GetImageFormat("RAW"));
Assert.Null(AttributeHelpers.GetImageFormat(""));
Assert.Null(AttributeHelpers.GetImageFormat(null));
Assert.Null(AttributeHelpers.GetImageFormat("SOME_RANDOM_STRING"));
}