这样做可以确保在单元测试运行之前，使用新的run - groovyc目标编译groovy脚本。

Doing so ensures the groovy scripts will be compiled with the new run-groovyc goal before any unit tests are run.

youdao

JUnit 3测试运行程序(test runner)会在运行每个测试之前自动调用setUp方法。

JUnit 3 test runners automatically invoke the setUp method before running each test.

youdao

在编写代码前编写测试这种作法意味着，在测试运行并失败之前，不会做工作中真正有趣的部分。

Writing a test before the code means you don't get to do the fun part of the job until the test runs and fails.

youdao