PyTest fixture with session scope does not maintains continuity of db data

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This test session works properly :

from myapp.models import MyModel
@pytest.fixture(scope='function')
def mymodel():
    return G(MyModel)

@pytest.mark.django_db
def test_mymodel_one(mymodel):
    assert MyModel.objects.count() > 0

@pytest.mark.django_db
def test_mymodel_two(mymodel):
    assert MyModel.objects.count() > 0

and produces this output:

========= test session starts =========
tests/myapp/test_pp.py::test_mymodel_one PASSED
tests/myapp/test_pp.py::test_mymodel_two PASSED

but if I change the scope of my fixture to 'session', test two fails:

========= test session starts =========
tests/myapp/test_pp.py::test_mymodel_one PASSED
tests/myapp/test_pp.py::test_mymodel_two FAILED

========= FAILURES ==============
_________ test_mymodel_two ________
tests/myapp/test_pp.py:85: in test_mymodel_two
    assert MyModel.objects.count() > 0
E   assert 0 > 0

The object created is correctly returned from fixture (I can access his values) but it isn't stored no more. How can I use session scope and maintain the storage in my test db?

asked 18 secs ago

Salvatore Avanzo

1,154

PyTest fixture with session scope does not maintains continuity of db data