public void Test_Manhatten_Distance_Metric()
{
//arrange
int[] pixels1 = { -5, -6, -7 };
int[] pixels2 = { -1, 8, 7 };
ManhattanDistance md = new ManhattanDistance();
//act
var result = md.Between(pixels1, pixels2);
//assert
Assert.AreEqual(result, 32);
}