Transactional Boundary Mocking in Integration Test Suites

import functools
from unittest.mock import patch
from django.db import transaction
 
def mock_external_call_on_commit(mock_target: str):
    def decorator(func):
        @functools.wraps(func)
        def wrapper(*args, **kwargs):
            def patched_on_commit(callback, using=None):
                with patch(mock_target) as mock_obj:
                    callback()
            with patch.object(transaction, 'on_commit', side_effect=patched_on_commit):
                return func(*args, **kwargs)
        return wrapper
    return decorator