I have the following factory:
class ContactFactory(DjangoModelFactory):
name = Faker('company')
industry = Iterator(Industry.objects.all())
class Meta:
model = 'sales.contact'
@post_generation
def requested_devices(self, create, extracted, **kwargs):
if create:
self.requested_devices.add(MSize.objects.first())
And I'm trying to write a test such as:
class TestUserCanAskQuestion(TestCase):
@classmethod
def setUpTestData(cls):
call_command('insert_initial_data')
def setUp(self):
self.contact = ContactFactory()
But everytime I run the test, it results in "StopIteration" error. Here is the full stack trace:
ERROR: test_dummy (comminquiry.tests.test_views.TestUserCanAskQuestion)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/mnt/c/Users/Alire/Projects/mm/mm-bpmui/src/comminquiry/tests/test_views.py", line 32, in test_dummy
a = ContactFactory.build()
File "/mnt/c/Users/Alire/Projects/mm/venv/lib/python3.5/site-packages/factory/base.py", line 546, in build
return cls._generate(enums.BUILD_STRATEGY, kwargs)
File "/mnt/c/Users/Alire/Projects/mm/venv/lib/python3.5/site-packages/factory/base.py", line 500, in _generate
return step.build()
File "/mnt/c/Users/Alire/Projects/mm/venv/lib/python3.5/site-packages/factory/builder.py", line 272, in build
step.resolve(pre)
File "/mnt/c/Users/Alire/Projects/mm/venv/lib/python3.5/site-packages/factory/builder.py", line 221, in resolve
self.attributes[field_name] = getattr(self.stub, field_name)
File "/mnt/c/Users/Alire/Projects/mm/venv/lib/python3.5/site-packages/factory/builder.py", line 375, in __getattr__
extra=context,
File "/mnt/c/Users/Alire/Projects/mm/venv/lib/python3.5/site-packages/factory/declarations.py", line 196, in evaluate
value = next(iter(self.iterator))
File "/mnt/c/Users/Alire/Projects/mm/venv/lib/python3.5/site-packages/factory/utils.py", line 136, in __iter__
value = next(self.iterator)
StopIteration
----------------------------------------------------------------------
Ran 1 test in 2.433s
If I move the ContactFactory() outside of class, the error disappears. I'm I missing something? or it's a bug in factory boy or django?
(I'm using factory_boy==2.11.1 and django==2.1.2)
As @dirkgroten had suggested, one the fields was returning an empty queryset. This was the root cause of the error.