public void PopulatePlaceParameters_TestInvalidPlaceParamsFormat_IsNull()
        {
            // arrange
            string[] input = "PLACE 1,1,WEST,5".Split(' ');
            ToyRobot robot = new ToyRobot(new TableSurface(5, 5));

            //act
            Location tmpLocation = robot.PopulatePlaceParameters(input);

            //assert
            Assert.IsNull(tmpLocation);
        }