🚀 Description

this PR adds missing tests to video service API, I was planning to include them in #62 but had to consult @mblomdahl first

📄 Motivation and Context

[ ] Bug fix (non-breaking change which fixes an issue)
[x] New feature (non-breaking change which adds functionality)
[ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

[x] Squash your changes into a single clear and thoroughly descriptive commit, split changes into multiple commits only when it contributes to readability
[x] Reference the GitHub issue that you are contributing on in your commit title or body
[x] Sign your commits, as this is required by the automated GitHub PR checks
[x] Ensure that the changes adhere to the project code style and formatting rules by running npx eslint . and npx prettier --check ../ from the ./OwnTube.tv/ directory (without errors/warnings)
[x] Include links and illustrations in your pull request to make it easy to review
[x] Request a review by @ar9708, @OGTor, @tryklick and @mblomdahl