Add RE tests

[dvora-h]

Pull Request check-list

Please make sure to review and check all of these items:

• Do tests and lints pass with this change?
• Do the CI tests pass with this change (enable it first in your forked repo and wait for the github action build to finish)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
• Is there an example added to the examples folder (if applicable)?
• Was the change added to CHANGES file?

NOTE: these things are not required to open a PR and can be done
afterwards / while the PR is open.

Description of change

Please provide a description of the change here.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (0a82496) 91.84% compared to head (923f9a8) 91.84%.

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Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3114   +/-   ##
=======================================
  Coverage   91.84%   91.84%           
=======================================
  Files         128      128           
  Lines       33320    33320           
=======================================
  Hits        30602    30602           
  Misses       2718     2718           

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