def test_foreign_key_inverse(self):
identifier = factories.WorkIdentifierFactory()
assert models.WorkIdentifier.objects.count() == 1
assert models.AbstractCreativeWork.objects.count() == 1
assert models.WorkIdentifierVersion.objects.count() == 1
assert models.AbstractCreativeWorkVersion.objects.count() == 1
identifier.creative_work.delete()
assert models.WorkIdentifier.objects.count() == 0
assert models.AbstractCreativeWork.objects.count() == 0
assert models.WorkIdentifierVersion.objects.count() == 0
assert models.AbstractCreativeWorkVersion.objects.count() == 0
def test_foreign_key(self):
identifier = factories.WorkIdentifierFactory()
assert models.WorkIdentifier.objects.exclude(id=None).count() == 1
assert models.AbstractCreativeWork.objects.exclude(
id=None).count() == 1
assert models.WorkIdentifierVersion.objects.exclude(
id=None).count() == 1
assert models.AbstractCreativeWorkVersion.objects.exclude(
id=None).count() == 1
identifier.delete()
assert models.WorkIdentifier.objects.exclude(id=None).count() == 0
assert models.AbstractCreativeWork.objects.exclude(
id=None).count() == 1
assert models.WorkIdentifierVersion.objects.exclude(
id=None).count() == 0
assert models.AbstractCreativeWorkVersion.objects.exclude(
id=None).count() == 1