Explain API testing with an example

  Hello,

    In this blog, I'm going to explain about What is the API testing with example.

What is API testing:

    API testing is a type of software testing that analyzes an application program interface (API) to verify it fulfills its expected functionality, security, performance and reliability. The tests are performed either directly on the API or as part of integration testing.

    API testing focuses on analyzing the business logic as well as the security of the application and data responses. An API test is generally performed by making requests to one or more API endpoints and comparing the response with expected results.

    API testing is frequently automated and used by Devops, QA and development teams for continuous testing practices.

Examples of API tests:

    While the use cases of API testing are endless, here is one example of test that can be performed to guarantee that the API is producing the appropriate results.

    When a user opens a social media app -- such as Twitter or Instagram -- they are asked to log in. This can be done within the app or through a third party like Google or Facebook. This implies the social media app has an existing agreement with Google and Facebook to access some level of user information already supplied to these two sources. An API test must then be conducted to ensure that the social media app can collaborate with Google and Facebook to pull the necessary information that will grant the user access to the app using login information from the other sources.