AttributeError: 'function' object has no attribute 'wrapped' in Django 2.2

In Django 2.2 (works fine in 2.1) tests, connections are overridden/monkey patched with properties that throw errors, specifically the connection.cursor method.

https://github.com/django/django/blob/master/django/test/testcases.py#L210

Graphene also monkey patches connection.cursor.

https://github.com/graphql-python/graphene-django/blob/master/graphene_django/debug/sql/tracking.py#L43

This causes tests to fail when Django attempts to undo the monkey patch. https://github.com/django/django/blob/master/django/test/testcases.py#L220

The following error occurs:

ERROR: tearDownClass (point_of_sale.tests.graphene.queries.e2e_test_cash_and_check_batch_query.CashAndCheckBatchQueryTestCase)
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Traceback (most recent call last):
  File "/usr/local/cedar/api/common/testing/test_cases/db_test_case.py", line 44, in tearDownClass
    super(TestCase, cls).tearDownClass()
  File "/usr/local/lib/python3.6/dist-packages/django/test/testcases.py", line 244, in tearDownClass
    cls._remove_databases_failures()
  File "/usr/local/lib/python3.6/dist-packages/django/test/testcases.py", line 240, in _remove_databases_failures
    setattr(connection, name, method.wrapped)
AttributeError: 'function' object has no attribute 'wrapped'

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This test is using the Django test client to test the /graphql endpoint. https://docs.djangoproject.com/en/3.0/topics/testing/tools/#overview-and-a-quick-example

[frankmeszaros]

Hey @crazyscientist , I have been running into this exact issue for the past week and it was driving me crazy! I’m not sure if this will help you but this was what fixed it for me on a relatively standard graphene-django setup:

The error

in your settings.py (or wherever the settings for your tests live), we initially had:

# ... other stuff

GRAPHENE = {}

# ... other stuff

When this is the case, I was seeing the following 😢 :

The Fix

in your settings.py (or wherever the settings for your tests live), we revised this to:

# ... other stuff

GRAPHENE = {
  "MIDDLEWARE": [] 
}

When this minor change was added, I was no longer getting the error 😄 :

🎉 I hope this gets you a little farther along in your adventures, happy coding!

[sebslomski]

This is caused by the graphene-django debug middleware. In order fix it, set the graphene middlewares to []