Update test/test_actions.py to work with py.test The test_actions tests use a FieldStorage object to mock form submissions. FieldStorage would usually use the 'QUERY_STRING' environment variable to populate the initial list of MiniFieldStorage values stored within the FieldStorage object, but because there is no 'QUERY_STRING' environment variable when running the test from the commandline it tries to parse sys.argv instead. If any py.test options are used (ie. '--tb=short') then they may end up in the MiniFieldStorage list causing some tests to fail because they were not expecting the extra MiniFieldStorage values. To fix this we explicitly pass an dict with an empty 'QUERY_STRING' value as the FieldStorage environ argument to ensure that the initial MiniFieldStorage list is empty.

class MockNull:
    def __init__(self, **kwargs):
        for key, value in kwargs.items():
            self.__dict__[key] = value

    def __call__(self, *args, **kwargs): return MockNull()
    def __getattr__(self, name):
        # This allows assignments which assume all intermediate steps are Null
        # objects if they don't exist yet.
        #
        # For example (with just 'client' defined):
        #
        # client.db.config.TRACKER_WEB = 'BASE/'
        self.__dict__[name] = MockNull()
        return getattr(self, name)

    def __getitem__(self, key): return self
    def __nonzero__(self): return 0
    def __str__(self): return ''
    def __repr__(self): return '<MockNull 0x%x>'%id(self)
    def gettext(self, str): return str
    _ = gettext