[Process] Add unit tests for #7865
merged branch romainneutron/termsig-tests (PR #7874)

This PR was merged into the master branch.

Discussion
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[Process] Add unit tests for #7865

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | |no
| Tests pass?   | yes when 2.1 will be merged in master
| License       | MIT

This PR adds test for #7865. It's currently failing, but will pass once 2.1 will be merged in master.

Commits
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421c354 [Process] Add unit tests for #7865