Hands-On RESTful API Design Patterns and Best Practices

Essential aspects of API test cases and test case preparation

The following list covers a few essential aspects of test case preparation for API testing, as the test cases on API testing depend on their outputs:

• Assert a return value based on different input conditions and a combination of inputs.
• Assert the behavior of the API when there is no return value. Check for return codes.
• Assert the events and triggers of an API if the underlying/target API creates subsequent events.
• Assert not only the API results in case of update data structure but validate the effect on the system that it has updated.
• Assert by accessing impacted resources when the API is involved in modifying specific resources.