'If the I{LISTEN_FDS} environment variable is not present, no inherited
descriptors are reported.'

def test_missingFDSVariable(self):

    fakeEnvironment = self.initializeEnvironment(3, os.getpid())
    del fakeEnvironment['LISTEN_FDS']
    sddaemon = ListenFDs.fromEnvironment(environ=fakeEnvironment)
    self.assertEqual([], sddaemon.inheritedDescriptors())
