Testing Web APIs code example

Example 1: API testing example

In my last project. I did API testing for an internal project 
employee info Old application exposed the restful api for easy 
integration with other apps so I tested the app functionality 
works in api layer. I have experience both in testing and 
automating in Postman and automating using RestAssured Library

Example 2: How do you test API in your project?

Request Payload has
ENDPOINT (Specific URL where we send our requests to a certain web service. )
METHOD (Get•Post•Put•Patch•Delete)
HEADERS(Represents the metadata of request
or response. Like basically we can verify
the object type we are sending etc  )
PARAMETERS(Parameters are to specifiying 
even more about the request we are sending 
like what specific resources needs to be returned etc.)
BODY(Body is where we sent or received the request we made)
For the repsonse 
Basically we are checking response body
to verify if request matches with response.
In the response we are verifying
(body, status code, header, response time,
 test structure of json against the given jsonSchema)