Expose integration testing tools in `zarr-python`

[d-v-b]

It would be helpful for external libraries that want to extend Zarr, e.g. by creating new Store instances, to be able to plug their store classes into our test suite. We obviously can't do this directly in zarr-python, but we could define a lot of our testing infrastructure inside the zarr-python package. Our tests would then import a lot of test tooling from zarr-python itself, and external libraries could do the same, thereby facilitating integration testing. Can anyone suggest other ways to achieve this goal?

[dikwickley]

hi @d-v-b
there are many ways to go about this, one way we can do this can be like

\integrations-tests
  store-instance.py
  \tests
     test1.py, etc

store-instance.py

// import the store from your custom pacakge.
import store from custom-store

in all the tests file

import store from integrations-tests.store-instance
// other imports.

// use the above imported store in tests below.

We can also work on a test client of sorts (https://fastapi.tiangolo.com/tutorial/testing/#using-testclient what I remember)
people can plug their custom stores, codes, transformers, etc here and test them against some pre built testing suite.

we can even take a look at https://github.com/pytest-dev/pluggy