hyperboreean schrieb:
Hi, I am trying to test the business part of a web service. For this I
am using unittest & nose.
I wrote a decorator that should handle the xml test file retrieval, but
it seems I can't get it working with nose.
Here's the code:
* MyApp.py -- base test class *
import os
import unittest
from MyApp.Core import XmlParser
__all__ = ['MyAppTest', 'setup']
PATH = os.path.dirname(__file__) or ''
class setup(object):
"""Decorator to ease the use of xml files in MyApp tests.
The way it works it that it decorates a test method which has a first
default parameter called 'parser' and it overwrites this parameter value
with a XmlParser instance.
The xml file should be located under:
data/testedBusinessRequest/testMethodName.xml
"""
def __init__(self, testedBusinessRequest = ''):
self.testedBusinessRequest =\
testedBusinessRequest.lower()
def _getXmlParser(self, xml):
documentElement = XmlParser.parseXmlStream(xml)
parser = XmlParser.getParser(documentElement)
return parser
def __call__(self, method):
# TODO: error handling here
methodName = method.func_code.co_name
methodName = methodName.split('_')[1]
xmlFolder = self.testedBusinessRequest
xmlFile = '%s.xml' % methodName
path = os.path.join(PATH, 'data',
xmlFolder, xmlFile)
f = open(path)
xml = f.read()
f.close()
method.func_defaults = (self._getXmlParser(xml),)
return method
class MyAppTest(unittest.TestCase):
def setUp(self):
self.database = Database()
def tearDown(self):
pass
* test_Login.py - test a business request *
from MyAppTest import MyAppTest, setup
from MyApp import Login
class TestLogin(MyAppTest):
testedBusinessRequest = 'Login'
@setup(testedBusinessRequest)
def test_validParameters(self, parser = None):
response = Login(self.database, parser).run()
return True
Ok, so the decorator setup should fill the parser parameter with a
XmlParser object. This works well if I add a __main__ and use unittest
to run the tests. But if I use nose, I get the following error:
*TypeError: unbound method __call__() must be called with setup instance
as first argument (got module instance instead)*
Any advices?
Nose works via the func_name parameter of a method/function.
So when you decorate it, you need to make sure that is set properly. One
option is to do something like this:
from functools import wraps
def my_decorator(f):
@wraps(f)
def _d(*args, **kwargs):
return f(*args, **kwargs)
return _d
Diez
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