Help wanted - Convert Ava test to Jest test

[thim81]

When the postman-to-k6 library was incubated, Ava was a handy and easy to use testing framework.
The version used in the postman-to-k6 library is out-dated (and contains security issues) and migrating to the latest version is not easy, because of a lack of knowledge of Ava and the mocking used.

The approach is to switch to Jest. Jest is a testing framework with a lot of traction and fairly easy to use, including great tooling.

So this story is about migrating the current tests from Ava to Jest.
I'm more familiar with Jest (although not an expert) than with Ava, so I could use a hand from the community.

If there are members willing to contribute to this Ava to Jest migration, lets us know.