def METHOD_NAME(self):
    request = self.request_factory.post("/")
    request.user = self.user
    data = {
        "name": "vfrgthj",
        "time_recurrences": [
            {
                "days": [1, 2, 3, 4, 5],
                "start": "00:00:00",
                "end": "16:00:00",
            }
        ],
    }
    serializer = TimeslotSerializer(
        data=data,
        context={"request": request},
    )
    self.assertTrue(serializer.is_valid(), serializer.errors)