feat: add unit tests for tortoiseorm

[herin049]

Description

Adds a basic set of unit tests for tortoiseorm.

Fixes #4086

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

 tox run -e $(tox --listenvs | grep tortoise | tr '\n' ',')

Does This PR Require a Core Repo Change?

• Yes. - Link to PR:
• No.

Checklist:

See contributing.md for styleguide, changelog guidelines, and more.

• Followed the style guidelines of this project
• Changelogs have been updated
• Unit tests have been added

[xrmx]

Thanks!