json api test code example

Example 1: json placeholder

fetch('https://jsonplaceholder.typicode.com/todos/1')
  .then(response => response.json())
  .then(json => console.log(json))

Example 2: dummy api json

var xhr = new XMLHttpRequest();
xhr.open("GET", "https://reqres.in/api/products/3", true);
xhr.onload = function(){
    console.log(xhr.responseText);
};
xhr.send();

Example 3: dummy api

React Fakers is a collection of dummy data from the most popular dummy data
providers such as Json Place Holder, Faker, Pokemon, etc, 
for application development testing.

npm i react-fakers | yarn add react-fakers

Example 4: 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)