When integrating a new external API into an existing system, what testing strategy would best ensure compatibility and functionality?
- End-to-end testing
- Integration testing
- Regression testing
- Unit testing
In the context of integrating a new external API, integration testing would be the most effective strategy. This involves testing the interactions between different components to ensure they work together seamlessly. Integration testing helps identify issues related to data communication, error handling, and overall system compatibility. Unit testing, on the other hand, focuses on individual units or functions and may not catch issues that arise from the integration of components. Regression testing ensures that new changes do not negatively impact existing functionalities but may not specifically address external API compatibility.
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