In the software development lifecycle (SDLC), testing is one of the important stages where we ensure that the application works as expected and meets end-user requirements. Among the various techniques that we use for testing, mocking plays a crucial role in testing different components of a system, especially when the external services that the application is dependent on are not yet ready or deployed.

With that being said, let’s try to understand what mocking is and how it helps in integration testing and end-to-end (E2E) testing.

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