:white_check_mark: Add login test case

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 25.56%. Comparing base (7a1b18a) to head (5e27caa).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #388 +/- ## ========================================== - Coverage 26.02% 25.56% -0.46% ========================================== Files 271 269 -2 Lines 16492 16199 -293 ========================================== - Hits 4292 4142 -150 + Misses 11723 11607 -116 + Partials 477 450 -27 ``` | [Flag](https://app.codecov.io/gh/go-sigma/sigma/pull/388/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma) | Coverage Δ | | |---|---|---| | [unit-test-mysql](https://app.codecov.io/gh/go-sigma/sigma/pull/388/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma) | `25.55% <ø> (-0.47%)` | :arrow_down: | | [unit-test-postgresql](https://app.codecov.io/gh/go-sigma/sigma/pull/388/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma) | `25.55% <ø> (-0.47%)` | :arrow_down: | | [unit-test-sqlite3](https://app.codecov.io/gh/go-sigma/sigma/pull/388/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma) | `25.55% <ø> (-0.46%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=go-sigma#carryforward-flags-in-the-pull-request-comment) to find out more.

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.