public void ShouldMatchGreenImages()
{
var imageOne = new Bitmap(1, 1);
imageOne.SetPixel(0, 0, Color.Green);
var imageTwo = new Bitmap(1, 1);
imageTwo.SetPixel(0, 0, Color.Green);
ICompareBy subject = new CompareByAverageColor();
var result = subject.AreEqual(imageOne, imageTwo);
result.Equal.Should().BeTrue();
}
public void ShouldProvideUsefulMessageWhenImagesDoNotMatch( )
{
var imageOne = new Bitmap(1, 1);
imageOne.SetPixel(0, 0, Color.Red);
var imageTwo = new Bitmap(1, 1);
imageTwo.SetPixel(0, 0, Color.Blue);
ICompareBy subject = new CompareByAverageColor();
var result = subject.AreEqual(imageOne, imageTwo);
result.Equal.Should().BeFalse();
result.Message.Should().Be(
"Images are not equal because image one has an average color of:Color [A=255, R=255, G=0, B=0] and image two has an average color of:Color [A=255, R=0, G=0, B=255]");
}
public void ShouldNotMatchImageWithDifferentAverageColor()
{
var imageOne = new Bitmap(3, 1);
imageOne.SetPixel(0, 0, Color.Red);
imageOne.SetPixel(1, 0, Color.Red);
imageOne.SetPixel(2, 0, Color.Blue);
var imageTwo = new Bitmap(1, 3);
imageTwo.SetPixel(0, 0, Color.Red);
imageTwo.SetPixel(0, 1, Color.Green);
imageTwo.SetPixel(0, 2, Color.Blue);
ICompareBy subject = new CompareByAverageColor();
var result = subject.AreEqual(imageOne, imageTwo);
result.Equal.Should().BeFalse();
}