- Oct 13, 2018
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Application Programming Interface Testing is a type of software testing that involves testing application programming interfaces (APIs) directly and as part of integration testing to determine if they meet expectations for functionality, reliability, performance, and security. Since APIs lack a GUI, API testing is performed at the message layer / business layer. API testing is now considered critical for automating testing because APIs now serve as the primary interface to application logic and because GUI tests are difficult to maintain with the short release cycles and frequent changes commonly used with Agile software development.
Application Programming Interface testing won’t concentrate on the look and feel of an application / GUI testing.
In API Testing, you use software to send calls to the Business layer, get output, and verify the systems response.
Application Programming Interface Testing requires an application to interact with API. In order to test an API, you will need to
- Use API Testing Tool
- Write your own code (functions, test cases) to test the API.
Related posts:
API Testing cheat sheet
REST API - Response Codes and Statuses
API Testing Interview Questions- What are the differences between SOAP and REST?
- Advantages and disadvantages of SOAP
- When to use SOAP API?
- How does SOAP work?
- What are SOAP Web services?
- Difference between PUT and POST operations?
- HTTP methods supported by REST
