[WIP] 279 increate the code coverage of src rootfs

[tommady]

#279
the rootfs part

[codecov-commenter]

Codecov Report

Merging #340 (b8cac8b) into main (884428a) will increase coverage by 2.35%.
The diff coverage is 58.38%.

@@            Coverage Diff             @@
##             main     #340      +/-   ##
==========================================
+ Coverage   70.38%   72.73%   +2.35%     
==========================================
  Files          46       46              
  Lines        6790     7108     +318     
==========================================
+ Hits         4779     5170     +391     
+ Misses       2011     1938      -73     

[yihuaf]

I see this as draft, so changing the title to WIP. Let us know if anything you'd like to take a look :)

[yihuaf]

When you are done, can we break the PR into smaller PR since this now includes multiple tests? Thanks.

[tommady]

When you are done, can we break the PR into smaller PR since this now includes multiple tests? Thanks.

Will do

[tommady]

current rootfs test coverage is over 75%, so this PR will end up here.

[utam0k]

@tommady Of course, you may aim for 100% above 75.

[tommady]

@tommady Of course, you may aim for 100% above 75.

Yes, I agreed but it may be easier to achieve that goal when cgroup v2 is added, or I am afraid it will let the person who develops with that too painful with conflicts.

So yes I can do many as I can in the future, but right now I think it can stop here for a while.

WDYT