#!/usr/bin/env python3
"""
Test suite for project_unknown module
"""

import unittest
import sys
import os

# Add current directory to path so we can import our module
sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))

from project_unknown import hello_world, add_numbers

class TestProjectUnknown(unittest.TestCase):
    """Test cases for the project_unknown module."""
    
    def test_hello_world(self):
        """Test the hello_world function."""
        result = hello_world()
        self.assertEqual(result, "Hello, World!")
    
    def test_add_numbers_positive(self):
        """Test adding positive numbers."""
        result = add_numbers(2, 3)
        self.assertEqual(result, 5)
    
    def test_add_numbers_negative(self):
        """Test adding negative numbers."""
        result = add_numbers(-1, 1)
        self.assertEqual(result, 0)
    
    def test_add_numbers_zero(self):
        """Test adding zero."""
        result = add_numbers(5, 0)
        self.assertEqual(result, 5)

if __name__ == "__main__":
    print("=== Running Project Unknown Test Suite ===")
    unittest.main(verbosity=2)