':py:obj:`PKCS12` returns a new instance of :py:obj:`PKCS12` with no certificate,
private key, CA certificates, or friendly name.'

def test_empty_construction(self):

    p12 = PKCS12()
    self.assertEqual(None, p12.get_certificate())
    self.assertEqual(None, p12.get_privatekey())
    self.assertEqual(None, p12.get_ca_certificates())
    self.assertEqual(None, p12.get_friendlyname())
