test_hello.py

import unittest
import hello

class TestHello(unittest.TestCase): 
    def test_hello_python(self):
        self.assertEqual(hello.hello_python(), "Hello Python!")
    
    def test_hello_name(self):
        self.assertEqual(hello.hello_name(), "Hello Ghita!")
        self.assertEqual(hello.hello_name("Marian"), "Hello Marian!")

        self.assertRaises(ValueError, hello.hello_name, "M")
        with self.assertRaises(ValueError):
            hello.hello_name("M")

if __name__ == "__main__":
    unittest.main()