import pytest
from unittest.mock import Mock, patch
from swarms.models.multion import MultiOn

@pytest.fixture
def multion_instance():
    return MultiOn()

@pytest.fixture
def mock_multion():
    return Mock()

def test_multion_import():
    with pytest.raises(ImportError):
        import multion

def test_multion_init():
    multion = MultiOn()
    assert isinstance(multion, MultiOn)

def test_multion_run_with_valid_input(multion_instance, mock_multion):
    task = "Order chicken tendies"
    url = "https://www.google.com/"
    mock_multion.new_session.return_value = "Order chicken tendies. https://www.google.com/"
    
    with patch('swarms.models.multion.multion', mock_multion):
        response = multion_instance.run(task, url)
    
    assert response == "Order chicken tendies. https://www.google.com/"

def test_multion_run_with_invalid_input(multion_instance, mock_multion):
    task = ""
    url = "https://www.google.com/"
    mock_multion.new_session.return_value = None
    
    with patch('swarms.models.multion.multion', mock_multion):
        response = multion_instance.run(task, url)
    
    assert response is None

# Add more test cases to cover different scenarios, edge cases, and error handling as needed.