def test_is_safe(self): """test_is_safe: Test to make sure that is_safe function works """ solver = Queen(8) solver.board_state = [0] self.assertFalse(solver.is_safe(0, 1)) self.assertFalse(solver.is_safe(1, 0)) self.assertFalse(solver.is_safe(1, 1)) self.assertTrue(solver.is_safe(2, 1)) self.assertTrue(solver.is_safe(1, 2))