JUnit TestCase<br>
<span style="color: rgb(51, 51, 51); font-family: "PingFang SC", Avenir, Tahoma, Arial, "Lantinghei SC", "Microsoft Yahei", "Hiragino Sans GB", "Microsoft Sans Serif", "WenQuanYi Micro Hei", Helvetica, sans-serif; font-size: 16px;">setUp()、tearDown()</span><br>
