♻️ Separation of Tests

[gluax]

♻️ Refactor

To separate test files into smaller, more specific test files.

Motivation

As we add more functionality, some of the test files go well beyond the 1k line mark.
Separating them into separate files makes locating specific tests easier, as well as making the test files more readable.

Implementation

Try to group by common functionality, i.e.:

• happy flows
• expiration tests
• etc