CI(coverage): Existing tests coverage is low

[zztaki]

Is your feature request related to a problem? (你需要的功能是否与某个问题有关?)
There is a problem with the existing tests when running CI. In particular, even if the submitted PR does not modify the real codes, it may not pass CI. For example, the line coverage may not meet the standard.
PR, console log and HTML_Report.

Describe the solution you'd like (描述你期望的解决方法)
Maybe modify CI or add enough tests.

Describe alternatives you've considered (描述你想到的折衷方案)

Additional context/screenshots (更多上下文/截图)