earliest_timestamp is below latest_timestamp in postman test

Question

im trying to create test script for condition earlier_timestamp is below that latest_timestamp

var moment = require('moment');

pm.test("Condition - Earliest Timestamp is < 1 day", function() {

    var latest_Timestamp = pm.response.json();
    var earliest_Timestamp = pm.response.json();
  
    pm.expect(pm.earliest_timestamp.get(earliest_timestamp)).to.be.below(pm.latest_timestamp.get(latest_timestamp));
});

Im getting response

TypeError: Cannot read property 'get' of undefined

Answer 1

Assuming the following response body:

{
   "latest_timestamp":"2022-03-18 13:01:14.619542+00:00",
   "earliest_timestamp":"2022-03-17 13:01:14.619542+00:00"
}

this will work:

var jsonData = pm.response.json();

var latest = Date.parse(jsonData.latest_timestamp);
var earliest = Date.parse(jsonData.earliest_timestamp);

pm.test("Condition - Earliest Timestamp is < 1 day", function() {

    pm.expect(latest).to.be.above(earliest);

});

Depending on your actual response body, you would need to adapt lines 3 & 4 a little bit.