Added some tests

[YummYume]

Description

Add tests for :

• LogManager
• User constraints
• Tech constraints

No issue linked.

Type of change

Please add any relevant information to the type of change you've made.

• 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 (or is a documentation update)
• HIGH IMPORTANCE (requires a fast merging)

Has This Been Tested?

Please describe the tests that you ran to verify your changes. It is way more likely for a PR to be merged and approved with successful tests.

• Yes, I ran tests (describe below)
• No, I did not include any test
• No test is needed for this change

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

Browser compatibility (optional)

Which browser was this tested on?

• Chrome
• Firefox
• Opera
• Safari
• Edge
• Samsung Internet
• Others (specify)