A mock API imitates a real API call by providing a realistic JSON or XML response to the requester. Mock APIs can be designed on a developer’s computer or in the cloud. Responses of mock API can be static or dynamic, which simulates the data the real API world send as a response. Mock APIs are very useful for parallel development when APIs are still being developed and developers want to test expected behaviors simultaneously. Mock APIs can save a lot of time as API calls can help programmers use valuable unit tests and make it easier to identify problems.
