Using dynamic variable values in tests?

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Hi There,

I’m relatively new to postman and API testing. I’m not able to get this solution to work, and I’m not sure why.

I’ve created a collection that does the following:

  1. Get bearer token
  2. Get a list widgets from the endpoint
  3. Create/POST a new widget using a random widget name
  4. Get a list widgets from the endpoint and test that the newly created widget’s name is returned.

In my collection’s ‘Pre-request Scripts’ tab, I’ve entered this:

uuid = require('uuid');
pm.globals.set('wname', 'widget' + uuid.v4());

Then in my get request (step 4 above), I have this set as one of my tests:

var wname = pm.globals.get('wname');
pm.test("Body matches string", function () {
    pm.expect(pm.response.text()).to.include(wname);
});

This test always fails because I can see that it is looking for a name with a different random number than what was set in the ‘Pre-request Scripts’ above:

AssertionError: expected ‘[{“widget name”:“widgetaac95318-6272-4547-8e4d-974f1cc48616”}]’ to include ‘widgetb6a8ab70-33b9-448a-9a19-0638eee0882e’

Any idea what I may be doing wrong?

Thanks so much for your help and patience.

Ed