old_contents: # encoding: utf-8
  import mock
  import pytest
  import pytz
  import datetime
  
  from django.utils import timezone
  
  from addons.osfstorage import utils
  from addons.osfstorage.tests.utils import StorageTestCase
  
  from osf_tests.factories import ProjectFactory
  
  from scripts.analytics.download_count_summary import DownloadCountSummary
  
  
  @pytest.mark.django_db
  class TestDownloadCount(StorageTestCase):
  
      def test_download_count(self):
          # Keen does not allow same day requests so we have to do some time traveling to my birthday
          timezone.now = mock.Mock(return_value=datetime.datetime(1991, 9, 25).replace(tzinfo=pytz.utc))
          node = ProjectFactory()
  
          utils.update_analytics(node, 'fake id', {'contributors': node.contributors})
  
          # Now back to the future, querying old date.
          timezone.now = mock.Mock(return_value=datetime.datetime.now().replace(tzinfo=pytz.utc))
          query_date = datetime.date(1991, 9, 25)
  
          event = DownloadCountSummary().get_events(query_date)
  
          assert event[0]['files']['total'] == 1
  
new_contents: # encoding: utf-8
  import mock
  import pytest
  import pytz
  import datetime
  
  
  from addons.osfstorage import utils
  from addons.osfstorage.tests.utils import StorageTestCase
  
  from osf_tests.factories import ProjectFactory
  
  from scripts.analytics.download_count_summary import DownloadCountSummary
  
  
  @pytest.mark.django_db
  class TestDownloadCount(StorageTestCase):
  
  
      def test_download_count(self):
          # Keen does not allow same day requests so we have to do some time traveling to my birthday
          with mock.patch('django.utils.timezone.now', return_value=datetime.datetime(1991, 9, 25).replace(tzinfo=pytz.utc)):
              node = ProjectFactory()
              utils.update_analytics(node, 'fake id', {'contributors': node.contributors})
  
          query_date = datetime.date(1991, 9, 25)
  
          event = DownloadCountSummary().get_events(query_date)
  
          assert event[0]['files']['total'] == 1
  
subject: patch timezone.now instead of mock.