Add --ignoreProjects CLI argument to ignore test suites by project name

[F3n67u]

Summary

Add --ignoreProjects CLI argument to ignore test suites by project name

close #12618

Test plan

[mrazauskas]

Just thinking out loud. I am fine with the implementation, only not so sure if word ignore is describing the option well?

What about --omitProjects? Or perhaps --skipProjects? (A pair of --onlyProjects and --skipProjects might be a good choice, but perhaps that is unnecessary change.)

[F3n67u]

Just thinking out loud. I am fine with the implementation, only not so sure if word ignore is describing the option well?

What about --omitProjects? Or perhaps --skipProjects? (A pair of --onlyProjects and --skipProjects might be a good choice, but perhaps that is unnecessary change.)

@mrazauskas I will vote for --ignoreProjects. jest already has an --testPathIgnorePatterns cli option. ignoreProjects will make cli option more consistent.

and ignore is used a lot more than the skip word in the javascript community. for example:

1. https://eslint.org/docs/user-guide/command-line-interface#--ignore-pattern
2. https://prettier.io/docs/en/cli.html#--ignore-path

[SimenB]

thanks, I like it! can you add a changelog entry as well?

[SimenB]

what happens if both this and selectProjects is used? Ideally it should be a configuration error. (and be mentioned in the docs)

[F3n67u]

selectProjects and ignoreProjects could be used together. now it seems no need to do it because we don't support glob pattern, but I think to allow them to be used together will be better (not include a breaking change) because we maybe support glob in both selectProjects and ignoreProjects. just as Typescript allows you to use include and exclude together.

and I don't think there is any reason to restrict our user to use them together, If they like to, we will allow them to use.

[F3n67u]

see how our user's opinion here: #12618 (comment)

[eliw00d]

@F3n67u Glob support for both would be awesome as well, especially if you're using https://github.com/jest-community/jest-runner-eslint so you could do ignore *-test when running tests and ignore *-lint when running lint.

[SimenB]

Mind opening up a separate feature request?

[eliw00d]

Sure!

[F3n67u]

@SimenB here is the test for using --selectProjects and --ignoreProjects together.

[F3n67u]

thanks, I like it! can you add a changelog entry as well?

done.

[SimenB]

thanks!

[SimenB]

https://github.com/facebook/jest/releases/tag/v28.0.0-alpha.8

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