Even though not used, import models for Factory Boy

pinry/core/tests/helpers.py

@@ -7,6 +7,9 @@ from django.test import TestCase
 import factory
 from taggit.models import Tag
 
+from ..models import Pin, Image
+from ...users.models import User
+
 
 TEST_IMAGE_PATH = settings.SITE_ROOT + 'screenshot.png'
 
@@ -70,4 +73,4 @@ class PinFactoryTest(TestCase):
 
     def test_empty_tags(self):
         PinFactory(tags=[])
-        self.assertEqual(Tag.objects.count(), 0)
+        self.assertEqual(Tag.objects.count(), 0)