Multi tool use

Django PUT TestCase fails if client initialised in setUpTestData() but passes if client initialized in setUp()

I am writing tests where every test case passes except the PUT

from django.test import TestCase
from rest_framework.test import APIClient


class ViewTestCase(TestCase):

@classmethod
def setUpTestData(cls):
cls.client = APIClient()

def setUp(self):
"""setUp() runs before every single test method."""
self.user_data = {'first_name': "John", 'last_name': "Doe", 'email_id': "john@doe.com",
'phone_number': "987654321", 'is_verified': False}
self.response = self.client.post(
reverse('create'),
self.user_data,
format='json')

def test_api_can_update_user(self):
user = User.objects.get()
changes = {'first_name': "Johnny"}
changed_user_data = {**self.user_data, **changes}

response = self.client.put(
reverse('details', kwargs={'email': user.email_id}),
changed_user_data,
format='json')

self.assertEqual(response.status_code, status.HTTP_200_OK)


This test case fails with response.status_code = 415 (unsupported media type)
whereas if I just move the client initialization from setUpTestData() to setUp()
everything passes.

def setUp(self):
self.client = APIClient() # Test case passed now.
...


There are other tests for GET, POST, DELETE all of which pass
irrespective of whether client instance is shared(setUpTestData) or not.

PS: All apis including PUT work from DRF web api view.

1 Answer
1

From my understanding and with your test above client is not an instance attribute of the class instead it is a class attribute so hence the error response. Try changing self.client to cls.client in your setUp method and test_api_can_update_user method.
Also in my experience it is advisable to initialise client before creating the testcases.

client

self.client

cls.client

setUp

test_api_can_update_user

client

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