[Authorization] Write tests for `afterstart`

[y9vad9]

Info
Before you go, check examples that already-made for authorization feature.
Also, make sure that you read and understand our architecture and MVI approach.

Other useful things to learn:

• https://sharmaricha7724.medium.com/understanding-mockk-kotlin-86db80db07e6
• https://www.vogella.com/tutorials/JUnit/article.html (we use kotlin.test package, but on JVM it uses jUnit under the hood)
• https://mockk.io

Create PR as soon as possible and request from me review.