Say I have a file fixtures.py that defines a simple py.test fixture called foobar.
Normally I would have to import that fixture to use it (including all of the sub-fixtures), like this:
from fixtures import foobar
def test_bazinga(foobar):
Note that I also don't want to use a star import.
How do I import this fixture so that I can just write:
import fixtures
def test_bazinga(foobar):
Is this even possible? It seems like it, because py.test itself defines exactly such fixtures (e.g. monkeypatch).
Fixtures and their visibility are a bit odd in pytest. They don't require importing, but if you defined them in a test_*.py file, they'll only be available in that file.
You can however put them in a (project- or subfolder-wide) conftest.py to use them in multiple files.
pytest-internal fixtures are simply defined in a core plugin, and thus available everywhere. In fact, a conftest.py is basically nothing else than a per-directory plugin.
You can also run py.test --fixtures to see where fixtures are coming from.