How to write a postman test to compare the response json against another json?

Question

I have the below json response after running a postMan test of a Rest API:

    {
    \"glossary\": {
        \"title\": \"example glossary\",
        \"Gloss         


        

Answer 1

You can paste this code into your collection or single request tests tab.

What this code do is to save the request into a global variable with a key for that request. You can change your enviroment and hit the same request and if the response are different the test will fail.

const responseKey = [pm.info.requestName, 'response'].join('/');
let res = '';
try {
    res = JSON.stringify(pm.response.json());
} catch(e) {
    res = pm.response.text();
}

if (!pm.globals.has(responseKey)) {
    pm.globals.set(responseKey, res);
} else {    
    pm.test(responseKey, function () {
        const response = pm.globals.get(responseKey);
        pm.globals.unset(responseKey);
        try {
            const data = pm.response.json();
            pm.expect(JSON.stringify(data)).to.eql(response);
        } catch(e) {
            const data = pm.response.text();
            pm.expect(data).to.eql(response);
        }
    });
}

Hope this help.