'L{twisted.conch.ssh.common.install} is deprecated.'

def test_deprecated(self):

    common.install()
    warnings = self.flushWarnings([self.test_deprecated])
    self.assertEqual(len(warnings), 1)
    self.assertEqual(warnings[0]['message'], 'twisted.conch.ssh.common.install    was    deprecated    in    Twisted    16.5.0')
