Postman with Newman – Run API Tests from the Command Line Like a Pro

Postman with Newman – A Complete Guide for API Test Automation

Postman is a popular tool for testing RESTful APIs. While it's great for manual testing, running tests as part of automation or CI/CD pipelines requires a command-line interface. That’s where Newman comes in!

🚀 What is Newman?

Newman is Postman’s command-line tool that lets you run Postman collections directly from your terminal. It allows automated API testing and is perfect for continuous integration workflows.

🛠️ How to Set Up Postman with Newman

Step 1: Install Node.js

Download and install Node.js from https://nodejs.org/.

Step 2: Install Newman

Open your terminal and run:

npm install -g newman

Step 3: Export Postman Collection

• Open Postman app
• Select your collection → click "..." → Export
• Choose "Collection v2.1 (recommended)" format

Step 4: Run Collection Using Newman

newman run your_collection.json

🧪 Run with Environment File

newman run your_collection.json -e your_environment.json

📊 Generate HTML Report

npm install -g newman-reporter-html
newman run your_collection.json -r html

🔁 Run with Data File (CSV or JSON)

newman run your_collection.json -d data.csv

⚙️ CI/CD Integration Ideas

• Jenkins: Add as a shell step
• GitHub Actions: Add in your YAML workflow
• GitLab CI: Include in your .gitlab-ci.yml

✅ Summary

Newman helps you automate Postman collections via CLI, making your API tests easily repeatable, CI/CD-friendly, and reportable. This approach saves time, improves accuracy, and helps detect issues earlier in the development cycle.

📎 Helpful Links

• Postman Official Site
• Newman on NPM
• Postman Learning Center

Written by Anup Khobragade | Published on SoftwareTesting-Guideline