GIB2021 - Testing with Postman

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The document discusses Postman, a Google Chrome app for testing APIs. It provides an overview of Postman's key features such as collections, variables, environments, testing capabilities, authentication support, API mocking, and command line integration. Tests in Postman can be run pre-request and post-request using JavaScript and the Chai assertion library. The document also demonstrates running a Postman collection from the command line using Newman and provides references for Postman test scripts, examples, and command line usage.

Technology

Dan Toomey
Testing with
Postman
Deloitte
@daniel2me
A look at some advanced features

Dan Toomey
Deloitte
Senior Integration
Specialist
@daniel2me
/in/danieltoomey

What is Postman?
• Google Chrome app for
testing APIs
• Available as a standalone
app for Mac, Windows,
Linux
• Free! (with limits)
• www.getpostman.com

Postman features
• Collections
• Account based
• Collaboration
• Variables
• Global
• Environment
• Environments
• Tests
• AuthN / AuthZ
• API Mocking
• Command line execution

Postman tests
• Node.js runtime permits scripted behaviour
• Pre-request
• Post-request
• Written in JavaScript
• Chai (Expect/Should)

Postman tests
• Node.js runtime permits scripted behaviour
• Pre-request
• Post-request
• Written in JavaScript
• Chai (Expect/Should)
• Defined / executed
at multiple levels

Running with Newman
# run the collection:
$ newman run mycollection.json
# runs the collection 10 times:
$ newman run mycollection.json -n 10
# run the collection for a particular environment:
$ newman run
https://www.postman.com/collections/cb208e7e64056f
5294e5 -e dev_environment.json

References
• Writing Postman test scripts:
https://learning.getpostman.com/docs/postman/scripts/test-scripts/
• Postman test examples:
https://learning.getpostman.com/docs/postman/scripts/test-examples/
• Chai assertion library:
https://www.chaijs.com/api/bdd/
• Chai.js cheatsheet:
https://devhints.io/chai
• Postman cheat sheet:
https://www.toolsqa.com/postman/postman-cheat-sheet/
• Command line integration with Newman:
https://learning.getpostman.com/docs/postman/collection-runs/command-line-integration-with-
newman/
• Spoontacular (Free API)
https://spoonacular.com/food-api

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GIB2021 - Testing with Postman

1. Dan Toomey Testing with Postman Deloitte @daniel2me A look at some advanced features

2. Dan Toomey Deloitte Senior Integration Specialist @daniel2me /in/danieltoomey

3. What is Postman? • Google Chrome app for testing APIs • Available as a standalone app for Mac, Windows, Linux • Free! (with limits) • www.getpostman.com

4. Postman features • Collections • Account based • Collaboration • Variables • Global • Environment • Environments • Tests • AuthN / AuthZ • API Mocking • Command line execution

5. Postman features • Collections • Account based • Collaboration • Variables • Global • Environment • Environments • Tests • AuthN / AuthZ • API Mocking • Command line execution

6. Postman features • Collections • Account based • Collaboration • Variables • Global • Environment • Environments • Tests • AuthN / AuthZ • API Mocking • Command line execution

7. Postman features • Collections • Account based • Collaboration • Variables • Global • Environment • Environments • Tests • AuthN / AuthZ • API Mocking • Command line execution

8. Postman tests • Node.js runtime permits scripted behaviour • Pre-request • Post-request • Written in JavaScript • Chai (Expect/Should)

9. Postman tests • Node.js runtime permits scripted behaviour • Pre-request • Post-request • Written in JavaScript • Chai (Expect/Should) • Defined / executed at multiple levels

10. Postman tests • Node.js runtime permits scripted behaviour • Pre-request • Post-request • Written in JavaScript • Chai (Expect/Should) • Defined / executed at multiple levels • Run in batches • Export reports

11. DEMO

12. Running with Newman # run the collection: $ newman run mycollection.json # runs the collection 10 times: $ newman run mycollection.json -n 10 # run the collection for a particular environment: $ newman run https://www.postman.com/collections/cb208e7e64056f 5294e5 -e dev_environment.json

13. References • Writing Postman test scripts: https://learning.getpostman.com/docs/postman/scripts/test-scripts/ • Postman test examples: https://learning.getpostman.com/docs/postman/scripts/test-examples/ • Chai assertion library: https://www.chaijs.com/api/bdd/ • Chai.js cheatsheet: https://devhints.io/chai • Postman cheat sheet: https://www.toolsqa.com/postman/postman-cheat-sheet/ • Command line integration with Newman: https://learning.getpostman.com/docs/postman/collection-runs/command-line-integration-with- newman/ • Spoontacular (Free API) https://spoonacular.com/food-api

14. Thank you!

GIB2021 - Testing with Postman

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