Checkout repo and run pytest

[caspervdw]

Checklist

• Used a personal fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged)
• Reset the build number to 0 (if the version changed)
• Re-rendered with the latest conda-smithy (Use the phrase @conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• Ensured the license file is being packaged.

This is a different approach from #25 to run pytest here.

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[caspervdw]

This works, only from sys import getrefcount does not work on pypy as sys.getrefcount is not implemented on pypy.

We should skip these tests on pypy.

[caspervdw]

I’d like to have this merged at some point @jorisvandenbossche

[jorisvandenbossche]

This could be easier now with the tests included in the package?

[caspervdw]

Absolutely. This PR is outdated now.