Follow-up from "Add the ability to use != approved-by in merge request filter"
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The following discussion from !55025 should be addressed:
- [ ] @rob.hunt started a [discussion](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/55025#note_610452702): (+2 comments)
> **suggestion:** I noticed that this file and its associated EE file don't have any associated tests :thinking:. WDYT about creating these tests or creating a follow-up to do so?
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