public void GetCoordinates_for_rowF_and_column12() { //Arrange var triangle = new TriangleService(); List <Coordinate> expectedCoordinate = new List <Coordinate> { new Coordinate { X = 50, Y = 50 }, new Coordinate { X = 60, Y = 50 }, new Coordinate { X = 60, Y = 60 }, }; //Act var result = triangle.GetCoordinate('F', 12); //Assert Assert.IsTrue(AreListsEqual(expectedCoordinate, result)); }