How to validate response in Postman?

Question

I am trying to validate response body including errors in postman. How can I validate the response and text below?

{
    \"responseHeader\": {
        \"publ         


        

Answer 1

In the "Test" tab, parse your response body into an object, then use JavaScript to perform your tests.

var data = JSON.parse(responseBody);
tests["publisherId is 12345"] = data.responseHeader.publisherId === "12345";

Take a look at the test examples at the Postman site:

https://www.getpostman.com/docs/postman/scripts/test_scripts

https://www.getpostman.com/docs/postman/scripts/test_examples