Exclude files from running if they match with the ignoring pattern

[mjesun]

Checking the existence of a file into a project via getting all files from haste is not enough. The reason for that is that a parent project might have a child project inside it, which all of its files explicitly blacklisted.

I've added an extra refinement step, where the full file paths are run through the testPathIgnorePatterns method, and returning false if they match (note: the result of the method is reversed, so the ! in front of the call is correct).

I also changed the test to create this particular use case, and verified that it fails on master but passes on the PR. Added entry in CHANGELOG.md as well.

It might also potentially fix #5332.

[SimenB]

Could you rebase so we can see that sweet green checkmark?

[codecov-io]

Codecov Report

Merging #5341 into master will decrease coverage by 0.02%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master    #5341      +/-   ##
==========================================
- Coverage   61.35%   61.32%   -0.03%     
==========================================
  Files         205      205              
  Lines        6906     6909       +3     
  Branches        4        4              
==========================================
  Hits         4237     4237              
- Misses       2668     2671       +3     
  Partials        1        1

Impacted Files	Coverage Δ
packages/jest-cli/src/search_source.js	37.64% <0%> (-1.38%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 054271c...9c1a328. Read the comment docs.

[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.
Please note this issue tracker is not a help forum. We recommend using StackOverflow or our discord channel for questions.