public void L16_FromRgba32()
{
// Arrange
L16 gray = default;
const byte rgb = 128;
ushort scaledRgb = ImageMaths.UpscaleFrom8BitTo16Bit(rgb);
ushort expected = ImageMaths.Get16BitBT709Luminance(scaledRgb, scaledRgb, scaledRgb);
// Act
gray.FromRgba32(new Rgba32(rgb, rgb, rgb));
ushort actual = gray.PackedValue;
// Assert
Assert.Equal(expected, actual);
}