'str' object has no attribute '_encode_json'

Question

I've been writing a test with RequestFactory to test one of my views, with the following code:

class ViewTestCase(TestCase):
@classmethod
def setUp(self):
    self.factory = RequestFactory
    self.user = User.objects.create_user(
        first_name='tester',
        username='test1', 
        password='123', 
        email='[email protected]'
        )

def test_room_creation(self):
    payload = {"titlePlanning": "Test1","styleCards": "Fibonnaci","deck": ["1","2","3"]}
    request = self.factory.post('/room', payload)
    request.user = self.user
    response = BeginRoom.as_view()(request)
    self.assertEqual(response.status_code, 200)

This is the data that I need to send to use POST:

class BeginRoom(APIView):
    permissions_classes = (IsAuthenticated,)
    def post(self, request, format=None):
    data= self.request.data
    user = request.user
    name = data['titlePlanning'].strip()
    styleCards = data['styleCards']
    cards = data['deck']

My problem is that whenever I run my tests I get the following error:

    data = self._encode_json({} if data is None else data, content_type)
 AttributeError: 'str' object has no attribute '_encode_json'

What should I do? I'm lost from here and can't find anything related. Any help is appreciated!

Answer 1

Instead of this inside test_room_creation:

request = self.factory.post('/room', payload)

use this:

request = self.factory.post('/room', payload, content_type='application/json')

From docs:

If you provide content_type as application/json, the data is serialized using json.dumps() if it’s a dict, list, or tuple.