gistfile1.py

    def test_bulk_create_timestamps(self):
        provider = Provider.objects.create(**{
            'url': 'http://www.google.com/',
            'name': 'Google',
            'names': json.dumps(['Google', ]),
            'favicon_url': 'http://www.google.com/favicon.ico',
        })

        import_id = uuid4()
        pre_create = utc.localize(datetime.datetime.utcnow())
        resources = Resource.objects.bulk_create([Resource(**{
            'imported_by': self.user,
            'provider': provider,
            'captured_url': 'http://www.google.com/',
            'canonical_url': 'http://www.google.com/',
            'title': 'Title',
            'author': 'Foo Bar',
            'description': 'This is an article.',
            'content': 'Yo!',
            'import_id': import_id,
        })])
        post_create = utc.localize(datetime.datetime.utcnow())

        resource = resources[0]
        original_created = resource.created
        original_modified = resource.modified
        self.assertTrue(pre_create < original_created < post_create)
        self.assertTrue(pre_create < original_modified < post_create)
        self.assertTrue(original_created < original_modified)
        self.assertTrue(
            original_modified - original_created < datetime.timedelta(
                seconds=1))

        resource = Resource.objects.get(import_id=import_id)
        pre_modify = utc.localize(datetime.datetime.utcnow())
        resource.save()
        post_modify = utc.localize(datetime.datetime.utcnow())

        resource = Resource.objects.get(id=resource.id)
        self.assertEqual(resource.created, original_created)
        self.assertNotEqual(resource.modified, original_modified)
        self.assertTrue(resource.created < pre_modify < post_modify)
        self.assertTrue(pre_modify < resource.modified < post_modify)