How to capture responsebody from newman - newman

Question

I want to capture the responsebody in Newman.
const newman = require('newman');
newman.run({
collection: require('./xxx.json'),
iterationData: './data.jsp',
reporters: 'cli'
}, function (err, summary) {
if (err) { throw err; }
console.log('collection run complete!');
console.log(summary);
});
I use the code above. it works fine but I want to capture the json output here from the call. How can I achieve it?

Answer 1

Perhaps you used a wrong term for retrieving json response body. If you want to just get the response body you need to parse JSON returned and to save it to a variable.
If you would use newman to run through command line there are everything is super simple:
let body = JSON.parse(responseBody)
console.log(body)
and after test where you need to see the response you put this 2 lines of code.
But with your case perhaps you need that:
1) Callback option
const newman = require('newman');
newman.run({
collection: require('./xxx.json'),
iterationData: './data.jsp',
reporters: 'cli'
}, function (err, summary) {
if (err) { throw err; }
console.log('collection run complete!');
console.log(summary);
})
.on('request', function (err, data) {
// err, data can be used to write to files using the node fs module.
});
or the better and modern option:
let response = await newman.run({
collection: 'collection',
environment: 'env',
})
.on('request', async function (err, data) {
// err, data can be used to write to files using the node fs module.
});
console.log(response)
Not sure I will be working as expected, but at least try.
Btw, where do you run these tests? just in clear env or use some runner framework.

Answer 2

Postman return execution summary in Callback function. after execution if you save the summary in callback and return it. you can access request/response/ headers.
function runcollection(callback){
newman.run({
collection: 'C:\\newman\\PMP Dependency latest collection\\Updated\\TestCollection.postman_collection.json',
environment: 'C:\\newman\\PMP Dependency latest collection\\Updated\\Test.postman_environment.json',
iterationCount :1
},function(error, summary){
callback(summary)
});
}
runcollection(result => {console.log(result.run.executions[0].response.stream.toString())});