Add mocktest module

[bcm820]

What type of PR is this?

What this PR does / why we need it:

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Special notes for your reviewer:

TODOs:

• squashed commits
• includes documentation
• adds unit tests
• adds or updates e2e tests

[codecov]

Codecov Report

Attention: Patch coverage is 97.36842% with 5 lines in your changes are missing coverage. Please review.

Project coverage is 59.34%. Comparing base (44f565f) to head (56ac277).

Files	Patch %	Lines
cmd/main.go	0.00%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #255      +/-   ##
==========================================
+ Coverage   54.21%   59.34%   +5.13%     
==========================================
  Files          27       30       +3     
  Lines        1577     1749     +172     
==========================================
+ Hits          855     1038     +183     
+ Misses        671      663       -8     
+ Partials       51       48       -3     

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