Django mock timezone aware datetime on creating model

Question

I have a test where I create a few objects:

def test_get_courier_task_returns_couriers_tasks(self):
    with patch('django.utils.timezone.now', return_value=make_aware(datetime(2018, 1, 24, 11, 57))):
        task1 = TaskFactory()

        response = json.loads(MyAPI.get_tasks_list(self.user.username))
        print('[*] Response timestamp: {}'.format(response['content'][0]['timestamp']))

The Task has created_timestamp field with auto_add_now set to True and to_json() method which is used in get_tasks_list() above:

class Task(models.Model):
    created_timestamp = models.DateTimeField(auto_now_add=True)

    def to_json(self):
        to_return = {
            'timestamp': self.created_timestamp.strftime('%d-%m-%Y %H:%M')
        }
        return to_return

Unfortunately tests give this output:

[*] Response timestamp: 24-01-2018 10:57

I have checked that this is timezone aware, but instead of giving me UTC+1 it gives UTC+0 on saving. What do I have to do? I have USE_TZ = True in my settings and I have applied migrations. This question did not help with my problem.

Answer 1

事实证明，给时区明确表示有助于：

with patch('django.utils.timezone.now', return_value=datetime(2018, 1, 24, 11, tzinfo=pytz.timezone('utc'))):

Answer 2

Try providing make_aware with the timezone you want.

Also checking for a specific time in the test is a bit circular, probably don't need to check for it and just make sure it runs and produces a timestamp.