時間長河: 需要在git gui 的bash终端里面输入，在界面左上角Repository->Git Bash

最强VIP: 加到对应的测试类里面的注解@RunWith(SpringJUnit4ClassRunner.class) ，问题解决，谢谢

枫叶红过二月花: Collection.isEmpty() should be used to test for emptiness squid:S1155 Using Collection.size() to test for emptiness works, but using Collection.isEmpty() makes the code more readable and can be more performant. The time complexity of any isEmpty() method implementation should be O(1) whereas some implementations of size() can be O(n)

别来无恙xd: 你这截的图size哪来的O(n)

天蓝999: 博主博客不错，有收获。只要功夫深，铁杵磨成针。