def test_get_db_prep_value_raises_error_when_oid_less_than_zero(self):
oid = randint(-100, 0)
field = LargeObjectField()
obj_file = LargeObjectFile()
obj_file.oid = oid
self.assertRaises(AssertionError, field.get_db_prep_value, obj_file)
def test_get_db_prep_value_returns_oid_when_value_LargeObjectFile(self):
oid = randint(1, 100)
field = LargeObjectField()
obj_file = LargeObjectFile()
obj_file.oid = oid
self.assertEqual(oid, field.get_db_prep_value(obj_file))
