How to use the vcard.vcard function in vcard

def test_main_succeeds_when_vcard_validator_returns_nothing(self, vcard_validator_mock, parse_arguments_mock):
        parse_arguments_mock.return_value = ARGUMENTS_WITH_PATH
        vcard_validator_mock.return_value.result = None
        self.assertEqual(0, vcard.main())

def test_parse_arguments_succeeds_with_multiple_paths(self):
        path1 = '/some/path'
        path2 = '/other/path'
        arguments = [path1, path2]
        expected_paths = arguments

        actual_paths = vcard.parse_arguments(arguments).paths

        self.assertEqual(expected_paths, actual_paths)

def test_doc(self):
        """Run DocTests"""
        self.assertEqual(doctest.testmod(vcard)[0], 0)
        self.assertEqual(doctest.testmod(vcard_definitions)[0], 0)
        self.assertEqual(doctest.testmod(vcard_errors)[0], 0)
        self.assertEqual(doctest.testmod(vcard_utils)[0], 0)
        self.assertEqual(doctest.testmod(vcard_validators)[0], 0)