def test_put_queen_at_a1(self):
result = put_queen(empty_board, "a1")
assertLikes(self, board_with_queen_at_a1, result)
def test_safely_put_one_more_queen_on_a_board_with_queen_at_a1_and_b3(self):
board_with_queen_at_a1_and_b3 = put_queen(board_with_queen_at_a1, "b3")
board, queen_position = safely_put_one_more_queen(board_with_queen_at_a1_and_b3)
self.assertEquals(3, count_queen(board))
self.assertTrue(validate_board(board))
