class Mammal:
    def __init__(self, name, mammal_type, sound):
        self.name = name
        self.type = mammal_type
        self.sound = sound
        self.__kingdom = "animals"
 
    def make_sound(self):
        return f"{self.name} makes {self.sound}"
 
    def get_kingdom(self):
        return self.__kingdom
 
    def info(self):
        return f"{self.name} is of type {self.type}"
        
        
import unittest

class TestMammal(unittest.TestCase):
    def setUp(self):
        self.mammal = Mammal('some_name', 'some_type', 'some_sound')
        
    def test_correct_initialization(self):
        self.assertEqual('some_name', self.mammal.name)
        self.assertEqual('some_type', self.mammal.type)
        self.assertEqual('some_sound', self.mammal.sound)
        
    def test_if_make_sound_is_correct(self):
        result = self.mammal.make_sound()
        self.assertEqual(f"some_name makes some_sound", result)
        
    def test_get_kingdom_is_correct(self):
        result = self. mammal.get_kingdom()
        self.assertEqual('animals', result)
        
    def test_get_info(self):
        result = self.mammal.info()
        self.assertEqual(f"some_name is of type some_type", result)
        
        
        
if __name__ == '__main__':
    unittest.main()