API Testing: API testing examines an application program interface (API) to make sure it performs as intended in terms of functionality, security, performance, and dependability. Either the API itself is used for the tests, or integration testing is used in their place.
An API is a piece of code that permits data interaction between two software programs. A typical application is made up of several layers, including an API layer. API layers define requests, including how to make them and the data formats utilized, with a focus on the business logic of applications.
API testing can be carried out either manually or automatically using testing software. Among the routine actions carried out during API testing are:
- Testing the API’s functionality to make sure it functions as intended
- Making sure the API responds appropriately to various input values examining input validity and error handling
- Examining potential security vulnerabilities.
- Evaluating the API’s performance and scalability
- API testing is crucial since it ensures that a system’s many parts can communicate with one another properly and that it can cope with a high frequency of requests.
Types of API Testing:
- Functional Testing: Functionality testing verifies that the API operates as intended.
- Reliability testing: The API may be used repeatedly and produce repeatable results.
- Load Testing: A lot of calls can be handled by the API during load testing.
- Creativity testing: The API is flexible and can be used in a variety of ways.
- Security testing: Authentication, permissions, and access restrictions are among the security requirements that the API has outlined for testing. Check out these API security guidelines to safeguard important data.
- Proficiency testing: The API broadens the scope of what developers can accomplish.
- API documentation testing: Testing the API documentation, also known as discovery testing, ensures that the user can readily follow the API documentation.
- Negative testing: It involves looking for any possible incorrect input the user might provide.
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