Demonstrate pytest fixture scoping and parameterization

test_demo.py

# Just run 'pytest' from the directory containing this file.

from pytest import fixture


def test_a(foo):
    assert 0, foo


def test_b(foo):
    assert 0, foo


@fixture(scope='module', params=['spam', 'eggs'])
def foo(tmpdir_factory, request):
    return next(i), request.param, tmpdir_factory.mktemp('foo')


i = iter(['first', 'second', 'third'])