def test_first_name(self):
        """
        Test the generation of Zulu first names.
        """
        # General first name.
        name = self.fake.first_name()
        self.assertIsInstance(name, str)
        self.assertIn(name, YoNGProvider.first_names)

        # Female first name.
        name = self.fake.first_name_female()
        self.assertIsInstance(name, str)
        self.assertIn(name, YoNGProvider.first_names)
        self.assertIn(name, YoNGProvider.first_names_female)

        # Male first name.
        name = self.fake.first_name_male()
        self.assertIsInstance(name, str)
        self.assertIn(name, YoNGProvider.first_names)
        self.assertIn(name, YoNGProvider.first_names_male)

        Test the generation of Zulu first names.
        
tests/providers/test_person.py