Postman big number issue

Question

I need to store the EventTypeId below in a global variable in Postman to be used on later tests:

{
    "EventTypeId": 8565382127936807869,
    "ValueName": "Engine Load Calculated",
    "FormatType": "Value",
    "DisplayUnits": "%",
    "EventType": "Custom",
    "Description": "Test Roja"
}

Because of the JS limit the value is stored as 8565382127936808000 and it fails when compared to the original one.

Is there a way to preserve it?

Thanks Wendelin. Please can you show me a little code on how to do it in Postman? I'll be glad of it. — Oswaldo Castro, Feb 19 '21 at 23:04

PDHide · Answer 1 · 2021-02-20T08:32:02.263

1

str =  pm.response.text().replace(/[:|: *](\d+)/g,'"$1"');

console.info(str)

console.log(JSON.parse(str).EventTypeId)

pm.globals.set("value",JSON.parse(str).EventTypeId)

Here we are enclosing that number in double quotes and then parsing to json so that you get the correct value as string

edited Feb 20 '21 at 08:32

answered Feb 20 '21 at 01:14

PDHide

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Might need to adjust this snippets here to provide a way to save to a Global variable anf then a potential way to use the value is subsequent requests – Danny Dainton Feb 20 '21 at 08:28
@DannyDainton I think OPS is aware of that main concern was about the rounding anyways added that for future readers :D – PDHide Feb 20 '21 at 08:32

score 0 · Answer 2 · answered Feb 20 '21 at 07:28

0

You could save the value as a string:

pm.globals.set('event_id', String(pm.response.json().EventTypeId))

When you need to use that in a script:

let eventTypeId = parseInt(pm.globals.get('event_id')

answered Feb 20 '21 at 07:28

Danny Dainton

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hi danny it will round it to the valid number before converting it to string – PDHide Feb 20 '21 at 08:12
its a 2^63 and max length in JS is 2^53 – PDHide Feb 20 '21 at 08:13
Fair point, didn't even try it – Danny Dainton Feb 20 '21 at 08:23
:D ya i wracked my head a lot too its an interesting issue , it would be great to have a native solution in postman itself – PDHide Feb 20 '21 at 08:24
1

It's not really a 'Postman' issue but handling it in a way that you don't have to jump through hoops would be better. – Danny Dainton Feb 20 '21 at 08:27
Yes its a node js issue but if there is a command for users that can be used to print big decimal , ( "likehow postman response is retrieved correctly") it would be really great – PDHide Feb 20 '21 at 08:29

Postman big number issue

2 Answers2