Here are some dos and don’ts for API testing automation:

Dos:

1. Start with a clear understanding of the API’s functionality and use cases.
2. Use a reliable and efficient testing framework to automate your API testing.
3. Use descriptive and meaningful test names to make it easy to understand what each test does.
4. Test for both positive and negative scenarios, covering all possible test cases.
5. Include assertions in your tests to ensure the API is returning the expected results.
6. Test API performance and scalability by using load-testing tools.
7. Store and manage test data and configurations in a central location.
8. Document the testing process, including the tools and methods used.

Don’ts:

1. Don’t rely solely on manual testing to ensure API functionality.
2. Don’t skip testing error handling and exception scenarios.
3. Don’t hard-code test data in your API test automation scripts.
4. Don’t use the API in the production environment for testing.
5. Don’t ignore API versioning while testing.
6. Don’t forget to secure your API tests to protect sensitive information.
7. Don’t assume the API will always work as intended, especially when changes or updates are made.