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How to mock an external service in Python with an anti-corruption facade

This code implements an anti-corruption facade that mocks an external API, allowing client code to interact with a simulated service while keeping the same interface.

microservices testing mocking

Python

class AntiCorruptionFacade:
    """Mocks a real API while keeping the same interface."""
    
    def __init__(self, data_store):
        self._data_store = data_store
        self._calls = []
    
    def get_user(self, user_id):
        self._calls.append(f"get_user({user_id})")
        return self._data_store.get(u…

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