Explain API testing with an example

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API (Application Programming Interface) testing is a type of software testing that aims to determine whether the APIs that are developed meet expectations when it comes to functionality, performance, reliability and security for an application.

APIs are mechanisms that enable two software components to communicate with each other using a set of definitions and protocols.

API testing flow is quite simple with three main steps:

  • Send the request with necessary input data.
  • Get the response having output data.
  • Verify that the response returned as expected in the requirement.
Example: The weather bureau's software system contains daily weather data. The weather app on your phone “talks” to this system via APIs and shows you daily weather updates on your phone.



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