You're tasked with writing unit tests for a complex function that relies on external API calls. How would you use mocking to test this function?
- Implement a separate test environment to run the external API calls
- Perform actual external API calls during testing
- Simulate the external API calls using a mocking framework
- Stub out the external API calls with hard-coded responses
Mocking involves creating objects that simulate the behavior of real objects. In this scenario, by using a mocking framework, you can simulate the behavior of the external API calls without actually making them. This allows for controlled and predictable testing, isolating the function under test from external dependencies.
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