API is an abbreviation which delegates as Application Programming Interface. API being a language independent holds an array of protocols, routines, and tools for designing Software Applications. APIs set a podium where one software program can articulate with another software program.
Protocols: An arrangement for transferring data between two systems.
Routine: a program that executes a particular task. Routine is also called as function, procedure or subroutine.
API serves as an interface which enables communication and data exchange between two separate software systems. API encompasses various software functions which can be put into effect by another software program.
Being cost-effective, API testing comprises testing APIs directly and also as a part of assimilation testing to verify whether the API fulfills expectations with reference to dependability, functionality, performance, and assurance of an application.
With API testing, minor bugs are detected as well as it requires less code which offers faster and better test coverage.
What precisely needs to be certified in API Testing?
• Data precision
• HTTP status algorithms
• Response duration
• Error codes by any chance API return any faults
• Endorsement checks
• Nonfunctional testing, for instance, performance testing, security testing.
API calls collection includes two things:
- HTTP headers: HTTP headers are always dependent on your application.
- HTTP Request: There are mainly four types of requests.
We can perform automation testing of API through Postman and selenium Web driver.
Hope this is useful !