Testing: Mock And Stub - DEV Community

Testing is a method to check whether the actual software product matches the expected requirements.Testing is Important because if there are any bugs or errors in the software, they can be identified early and can be solved before the delivery of the software product.Testing is a crucial part of software development, but it can be challenging to test code that depends on external dependencies and if you're interacting with 3rd party APIs, you don't want to make real calls every time you run a test. That's where mocks and stubs come in. In this guide, we'll take a deep dive into the world of mocks and stubs, and explore how they can help you isolate your tests and improve the reliability of your code.