public void ToMainColorSync_ImageIsNull_ReturnNull()
        {
            // Arrange
            var img = new ImageProcessingMethod(new ImageProcessing());

            // Act
            var result = img.ToMainColorsSync(null);

            // Assert
            Assert.Null(result);
        }
        public void ToMainColorSync_CorrectImage_ReturnNotNull()
        {
            // Arrange
            string fileName = "./Images/test2.jpg";
            var    img      = new ImageProcessingMethod(new ImageProcessing());
            var    image    = img.LoadFile(fileName);

            // Act
            var result = img.ToMainColorsSync(image);

            // Assert
            Assert.NotNull(result);
        }