Counting records in JSON array using javascript and Postman

Question

I have a control that returns 2 records:

{   "value": [     {       "ID": 5,       "Pupil": 1900031265,       "Offer": false,     },     {       "ID": 8,       "Pupil": 1900035302,       "Offer": false,       "OfferDetail": ""     }   ] } 

I need to test via Postman, that I have 2 records returned. I've tried various methods I've found here and elsewhere but with no luck. Using the code below fails to return the expected answer.

responseJson = JSON.parse(responseBody); var list = responseBody.length; tests["Expected number"] = list === undefined || list.length === 2; 

At this point I'm not sure if it's the API I'm testing that's at fault or my coding - I've tried looping through the items returned but that's not working for me either. Could someone advise please - I'm new to javascript so am expecting there to be an obvious cause to my problem but I'm failing to see it. Many thanks.

Answer 1

In postman, under Tests section, do the following (screenshot below): var body = JSON.parse(responseBody); tests["Count: " + body.value.length] = true;

Here is what you should see (note: I replaced responseBody with JSON to mock up example above):

Answer 2

Correct your json. and try this.

=======================v

var test = JSON.parse('{"value": [{"ID": 5,"Pupil": 1900031265,"Offer": false},{"ID": 8,"Pupil": 1900035302,"Offer": false,"OfferDetail": ""}] }')      test.value.length; // 2 

So you need to identify the array in the json (starting with the [ bracket. and then take the key and then check the length of the key.