Removed repeated model in tests and isort fix

tests/generic_relations/test_generic_relations.py

@@ -1,46 +1,8 @@
-from django.contrib.contenttypes.fields import (
-    GenericForeignKey, GenericRelation
-)
-from django.contrib.contenttypes.models import ContentType
-from django.db import models
 from django.test import TestCase
 
 from rest_framework import serializers
 
-
-class Tag(models.Model):
-    """
-    Tags have a descriptive slug, and are attached to an arbitrary object.
-    """
-    tag = models.SlugField()
-    content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
-    object_id = models.PositiveIntegerField()
-    tagged_item = GenericForeignKey('content_type', 'object_id')
-
-    def __str__(self):
-        return self.tag
-
-
-class Bookmark(models.Model):
-    """
-    A URL bookmark that may have multiple tags attached.
-    """
-    url = models.URLField()
-    tags = GenericRelation(Tag)
-
-    def __str__(self):
-        return 'Bookmark: %s' % self.url
-
-
-class Note(models.Model):
-    """
-    A textual note that may have multiple tags attached.
-    """
-    text = models.TextField()
-    tags = GenericRelation(Tag)
-
-    def __str__(self):
-        return 'Note: %s' % self.text
+from .models import Bookmark, Note, Tag
 
 
 class TestGenericRelations(TestCase):

tests/test_permissions.py

@@ -8,6 +8,7 @@ from django.contrib.auth.models import AnonymousUser, Group, Permission, User
 from django.db import models
 from django.test import TestCase
 from django.urls import ResolverMatch
+from tests.models import BasicModel
 
 from rest_framework import (
     HTTP_HEADER_ENCODING, RemovedInDRF310Warning, authentication, generics,
@@ -18,8 +19,6 @@ from rest_framework.filters import DjangoObjectPermissionsFilter
 from rest_framework.routers import DefaultRouter
 from rest_framework.test import APIRequestFactory
 
-from tests.models import BasicModel
-
 factory = APIRequestFactory()
 
 

tests/test_utils.py

@@ -1,5 +1,6 @@
 from django.conf.urls import url
 from django.test import TestCase, override_settings
+from tests.models import BasicModel
 
 from rest_framework.decorators import action
 from rest_framework.routers import SimpleRouter
@@ -10,8 +11,6 @@ from rest_framework.utils.urls import remove_query_param, replace_query_param
 from rest_framework.views import APIView
 from rest_framework.viewsets import ModelViewSet
 
-from tests.models import BasicModel
-
 
 class Root(APIView):
     pass