Including data files in the package directory

[migueldvb]

The data file in the tests is not currently not installed in the package directory. Although pytest works fine from the tests directory, running the unyt.test() function gives this error message:

_________________________ test_old_registry_json __________________________

    def test_old_registry_json():
        path = os.sep.join([os.path.dirname(__file__), "old_json_registry.txt"])
>       with open(path) as f:
E       FileNotFoundError: [Errno 2] No such file or directory: '/usr/local/lib/python3.8/site-packages/unyt-2.7.1+2.g57744cc-py3.8.egg/unyt/tests/old_json_registry.txt'

/usr/local/lib/python3.8/site-packages/unyt-2.7.1+2.g57744cc-py3.8.egg/unyt/tests/test_unit_registry.py:97: FileNotFoundError

Adding the package_data argument to the setup function to specify the files that are included in the package directory fixes the FileNotFoundError.

[ngoldbaum]

Fair enough, thanks for the fix! If you’re up for it, modifying the tox config to add a test run on only one python version (no need to run it over and over for all versions) that imports unyt and runs unyt.test(), that would be awesome. I’ll merge this without the test change but it would be nice to have CI for unyt.test() so we don’t regress for another reason in the future.