How can I update variable values in json body of a request (incrementing of time)

Question

In Postman calls, how can I update variable values in json body of a request with increasing time. I need to call the endpoint for 2048 times. Each call should have the end_time with 5mins difference. I'm unable to convert the value to normal time format.

I wrote this:

var moment = require("moment");
var t = pm.variables.get("t");
pm.environment.set('t', moment().add(1000, 'seconds').valueOf(t));
console.log("t", t);

I see an error:

{
    "ErrorCode": "1100",
    "Message": "request.end_time: Error converting value \"1581351445025\" to type 'System.TimeSpan'. Path 'end_time', line 10, position 29."
}

Sample request: (In Body)

{
  "monday": true,
  "tuesday": true,
  "wednesday": true,
  "thursday": true,
  "friday": true,
  "saturday": false,
  "sunday": false,
  "start_time": "7:30:00",
  "end_time": "{{t}}",
  "start_date": "2020-01-23",
  "end_date": "2020-05-23"
}

in your example `pm.variables.get("t")` what format is `t` in? — so cal cheesehead, Feb 10 '20 at 17:36
It inserts the current Unix Time Stamp (Represented as the number of seconds) like "start_time": "1510934784" — Learner, Feb 11 '20 at 19:55

score 0 · Answer 1 · answered Feb 12 '20 at 16:18

0

In Pre-req script view

var moment = require("moment");
var t = pm.variables.get("t");
console.log("t: " + t);
var newT = moment().add(1000, 'seconds').valueOf(t); 
console.log("newT: " + newT);
postman.setEnvironmentVariable("newT", newT);

Then your request body should just change to use the new variable {{newT}}

Not sure why but using pm.environment.set wasn't setting the environment at all but postman.setEnvironmentVariable seems to work.

answered Feb 12 '20 at 16:18

so cal cheesehead

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There is no change in the response. The value is still represented as the number of seconds. – Learner Feb 21 '20 at 16:13
You have to format it the way you want it with `.format('MM/DD/YYYY');` – so cal cheesehead Feb 21 '20 at 16:39

How can I update variable values in json body of a request (incrementing of time)

1 Answers1