Coverage 没有忽略 test 文件夹和文件

[guoyunhe]

可以看到 Coverage 里包含了很多 tests 文件夹中的内容，这些代码不应该算到 Coverage 里才对

https://app.codecov.io/gh/react-component/select/pull/1060?dropdown=coverage&src=pr&el=continue&utm_medium=referral&utm_source=github&utm_content=checks&utm_campaign=pr+comments&utm_term=react-component