API (Application Programming Interface)

-API Enables communication And data exchange between two separate Software System.

-A software system implementing An API Contains function /Sub routine which can be executed by another software System.

What is API testing ?

-API testing is entirely different From GUI Testing And mainly concentrate on the business logic layer of the Software architecture

-Instead of using standard user input and outputs ,In API testing you use Software to send calls to the API , get outputs and note down the system response.

-API testing requires an application to interact with API ,in order to test an API you will need

- Use testing tool to drive the API.

- Write Your own code to test the API.