public void TakeStartingPosition() { //Arrange PictureBox myPictureBox = new PictureBox(); Random randomizer = new Random(); Squirrel squirrel = new Squirrel() { StartingPosition = 90, RacetrackLength = 100, MyPictureBox = myPictureBox, Randomizer = randomizer }; myPictureBox.Location = new Point(50, 0); //Set the location to an arbitrary coordinate Point expectedLocation = new Point(90, 0); //Act squirrel.TakeStartingPosition(); Point actualLocation = squirrel.MyPictureBox.Location; //Assert Assert.AreEqual(expectedLocation.X, actualLocation.X); }