':py:obj:`verify_certificate` raises error when a self-signed certificate is
verified without itself in the chain.'

def test_untrusted_self_signed(self):

    store = X509Store()
    store_ctx = X509StoreContext(store, self.root_cert)
    e = self.assertRaises(X509StoreContextError, store_ctx.verify_certificate)
    self.assertEqual(e.args[0][2], 'self    signed    certificate')
    self.assertEqual(e.certificate.get_subject().CN, 'Testing    Root    CA')
