Verification_Engine: UTs added

[pawelbaran]

Issues addressed by this PR

Closes #3519

Test files

Passing unit-tests check should be enough. No .cs files touched. Script used to generate the UTs is available here.

Changelog

Additional comments

[pawelbaran]

@BHoMBot check unit-tests

[bhombot-ci]

@pawelbaran to confirm, the following actions are now queued:

• check unit-tests

[pawelbaran]

@BHoMBot check required

[bhombot-ci]

@pawelbaran to confirm, the following actions are now queued:

• check code-compliance
• check documentation-compliance
• check project-compliance
• check core
• check null-handling
• check serialisation
• check versioning
• check installer

[pawelbaran]

@BHoMBot check copyright-compliance
@BHoMBot check dataset-compliance

[bhombot-ci]

@pawelbaran to confirm, the following actions are now queued:

• check copyright-compliance
• check dataset-compliance

[michal-pekacki]

Unit test check passed, happy to approve 👍

[pawelbaran]

@BHoMBot check ready-to-merge

[pawelbaran]

@BHoMBot check ready-to-merge

[bhombot-ci]

@pawelbaran to confirm, the following actions are now queued:

• check ready-to-merge