I build automation frameworks — not just tests. Over 10 years I've designed and shipped production testing platforms across payment, insurance, and healthcare domains. My instinct is always toward architecture: clean abstractions, maintainable patterns, and systems that don't fall apart when the product scales. What I'm working on now: - A Claude/Playwright agent framework that generates test cases directly from Jira tickets - Concurrency and race-condition coverage for financial transactions - A modular Playwright/JavaScript platform covering UI and 20+ API service integrations with 100+ JSON schema validators I've built production automation in Playwright, Geb/Spock, Rest-Assured, and Selenium across payment, insurance, and healthcare domains. When a stack isn't working, I replace it. When a pattern is wrong, I fix it. If the automation problem is interesting, I'm probably already thinking about it.

As the son of a programmer I grew up on computers and have always loved them. Now I work as a Software Development Engineer in Test to write code and test things. I also enjoy my homelab hobby.

Another javascript library built into Postman is Lodash.

#Looping Arrays with Lodash Sometimes you will want to iterate through an array. Maybe your response itself is an array. Luckily there is an easy for loop that can be used. This is use for where you see [] in the Json as that means what is in the square brackets is an array. Here we use the tool Lodash. It is already included with postman and can be called by using the _ character. If you wish to use the more recent version of Lodash you should have a

var _= require('lodash')

but this is not necessary as the earlier version works just fine.

var jsonData = pm.response.json();
//Here we go through ever piece of data and check that it matches the data type set by the API.
pm.test("Has correct schema", function() {
    //Since there will be multiple plans we want to go through each plan available.
    _.each(jsonData, (data) => {
        pm.expect(data.str).to.be.a("string", "str not a string and instead is " + data.str);
         pm.expect(data.numArray[0]).to.be.a("number", "numArray[0] not a number and instead is " + data.numArray[0]");
         pm.expect(data.numArray[1]).to.be.a("integer", "numArray[1] not a integer and instead is " + data.numArray[1]");
         pm.expect(data.bool).to.be.a("boolean", "bool not a boolean and instead is " + data.bool");
    }
});

Links

Postman Quick Reference Guide Chai Assertion Library Regex Cheat Sheet Postman: The Complete Guide on Udemy

Testing with Postman: Lodash

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Command Palette

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