Passing (yield) fixtures as test parameters (with a temp directory)

Question

Question

Is it possible to pass yielding pytest fixtures (for setup and teardown) as parameters to test functions?

Context

I\'m testing an object th

Answer 1

Temporary directories and files are handled by pytest using the built in fixtures tmpdir and tmpdir_factory.

For this usage, tmpdir should be sufficient: https://docs.pytest.org/en/latest/tmpdir.html

Also, paramertrized fixtures would work well for this example.
These are documented here: https://docs.pytest.org/en/latest/fixture.html#fixture-parametrize

import os
import pytest


class Thing:
    def __init__(self, datadir, errorfile):
        self.datadir = datadir
        self.errorfile = errorfile


@pytest.fixture(params=(1, 2))
def thing(request, tmpdir):
    errorfile_name = 'testlog{}.log'.format(request.param)
    errorfile = tmpdir.join(errorfile_name)
    return Thing(datadir=str(tmpdir), errorfile=str(errorfile))


def test_attr(request, thing):
    assert os.path.exists(thing.datadir)

BTW, In Python Testing with pytest, parametrized fixtures are covered in ch3. tmpdir and other built in fixtures are covered in ch4.