pytest-cleanup-order.py

#! /usr/bin/env py.test

import pytest

class Client(object):
    def __init__(self, url):
        self.usable = True
        self.url = url
    def __repr__(self):
        return "Client %r" % self.__dict__

@pytest.fixture(params=["amqp://"])
def amqp_url(request):
    """the URL to a running rabbitmq instance"""
    return request.param

@pytest.fixture
def qname(request, client):
    def cleanup():
        print "CLEANUP QNAME", client
        assert client.usable

    request.addfinalizer(cleanup)
    return "foo"

@pytest.fixture
def client(request, amqp_url):
    """a connected puka.Client instance"""

    retval = Client(amqp_url)

    def cleanup():
        retval.usable = False
        print "CLEANUP CLIENT"

    request.addfinalizer(cleanup)
    return retval

def test_baz(client, qname):
    print "hello", client

# Output is something like:


# [dev]  ~/ % ./pytest-cleanup-order.py
# ============================== test session starts ===============================
# platform linux2 -- Python 2.7.3 -- pytest-2.3.4
# plugins: xdist
# collected 1 items

# pytest-cleanup-order.py .E

# ===================================== ERRORS =====================================
# _____________________ ERROR at teardown of test_baz[amqp://] _____________________

#     def cleanup():
#         print "CLEANUP QNAME", client
# >       assert client.usable
# E       assert Client {'url': 'amqp://', 'usable': False}.usable

# pytest-cleanup-order.py:21: AssertionError
# -------------------------------- Captured stdout ---------------------------------
# hello Client {'url': 'amqp://', 'usable': True}
# CLEANUP CLIENT
# CLEANUP QNAME Client {'url': 'amqp://', 'usable': False}
# ======================= 1 passed, 1 error in 0.01 seconds ========================