old_contents: from django.core.urlresolvers import reverse
  from sentry.models import TagKey, GroupTagKey, GroupTagValue
  from sentry.testutils import APITestCase
  
  
  class GroupTagsTest(APITestCase):
      def test_simple(self):
          group = self.create_group()
          group.data['tags'] = (['foo', 'bar'], ['biz', 'baz'])
          group.save()
  
          for key, value in group.data['tags']:
              TagKey.objects.create(
                  project=group.project,
                  key=key,
              )
              GroupTagKey.objects.create(
                  project=group.project,
                  group=group,
                  key=key,
              )
              GroupTagValue.objects.create(
                  project=group.project,
                  group=group,
                  key=key,
                  value=value,
              )
  
          self.login_as(user=self.user)
  
          url = reverse('sentry-api-0-group-tags', kwargs={
              'group_id': group.id,
          })
          response = self.client.get(url, format='json')
          assert response.status_code == 200, response.content
          assert len(response.data) == 2
  
new_contents: from django.core.urlresolvers import reverse
  from sentry.models import GroupTagKey, GroupTagValue, TagKey, TagValue
  from sentry.testutils import APITestCase
  
  
  class GroupTagsTest(APITestCase):
      def test_simple(self):
          group = self.create_group()
          group.data['tags'] = (['foo', 'bar'], ['biz', 'baz'])
          group.save()
  
          for key, value in group.data['tags']:
              TagKey.objects.create(
                  project=group.project,
                  key=key,
              )
              TagValue.objects.create(
                  project=group.project,
                  key=key,
                  value=value,
              )
              GroupTagKey.objects.create(
                  project=group.project,
                  group=group,
                  key=key,
              )
              GroupTagValue.objects.create(
                  project=group.project,
                  group=group,
                  key=key,
                  value=value,
              )
  
          self.login_as(user=self.user)
  
          url = reverse('sentry-api-0-group-tags', kwargs={
              'group_id': group.id,
          })
          response = self.client.get(url, format='json')
          assert response.status_code == 200, response.content
          assert len(response.data) == 2
  
subject: Fix tests