This is my code which is a simple signup and login and I'm trying to login via oauth2 class UserAuthTests(TestCase): def setUp(self): self.client = APIClient() self.user = CustomUser.objects.create_user( username='test', password='strongpassword123', email='test@example.com' ) self.application = Application.objects.create( name="Test Application", client_type=Application.CLIENT_CONFIDENTIAL, authorization_grant_type=Application.GRANT_PASSWORD, skip_authorization=True, user=self.user, # Associate the application with the user ) self.application.save() def test_register_user(self): url = '/api/users/register/' data = { 'username': 'newuser', 'password': 'newpassword123', 'email': 'newuser@example.com' } response = self.client.post(url, data, format='json') print(response.data) self.assertEqual(response.status_code, status.HTTP_201_CREATED) self.assertEqual(response.json()['username'], 'newuser') def test_login_user(self): url = '/o/token/' data = { 'grant_type': 'client_credentials', # i've tried with 'password' as well 'username': 'test', 'password': 'strongpassword123', 'client_id': self.application.client_id, 'client_secret': self.application.client_secret, } print(self.application.authorization_grant_type == 'password') print(f"Request Data: {data}") response = self.client.post(url, data=data, content_type="application/x-www-form-urlencoded") print(f"Response JSON: {response.json()}") self.assertEqual(response.status_code, status.HTTP_200_OK) self.assertIn('access_token', response.json()) self.assertIn('refresh_token', response.json()) I'm getting Response JSON: {'error': 'unsupported_grant_type'} or Invalid Client, my settings file looks like this - OAUTH2_PROVIDER = { 'ACCESS_TOKEN_EXPIRE_SECONDS': 36000, # Set token expiration 'OAUTH2_BACKEND_CLASS': 'oauth2_provider.oauth2_backends.OAuthLibCore', } I have tried changing content_type, but it has not worked. Please let me know how I can fix this. In my postman, I've tried the same and it works, here is the curl - curl --location 'localhost:8000/o/token/' \ --header 'Content-Type: application/x-www-form-urlencoded' \ --data-urlencode 'grant_type=password' \ --data-urlencode 'username=test' \ --data-urlencode 'password=strongpassword123' \ --data-urlencode 'client_id=Q0hvMw2Mk7uv5U4q8LMIOiK9Jo7SpJeXuFbXzaUW' \ --data-urlencode 'client_secret=nUgC6P1OAs6g2qGhS8yPzhh5uenHDVGQBHxM1uGcng3vym5v8vxcEqU6glnfR7XMOURt41k5zDx3pSK0r8HTH5l1VLIaDPMBiY6pjijhoVPjR1N7sLgk1TZxN0zZShaJ' Continue reading...
