public void Left_Up_slant_no_change_test()
{
Reversi Test = new Reversi(new Form(), new Form());
Test.arr[0, 0] = 2;
Test.arr[2, 2] = 2;
Test.Left_Up_slant_check(2, 2, 2);
Assert.AreEqual(Test.arr[1, 1], 0);
Assert.AreNotEqual(Test.arr[1, 1], 2);
Test.Close();
}