Selenium for Pythonistas

Talk given for the San Francisco Python Meetup at Yelp on May 8th, 2013. Focused mainly in Selenium and Testing tips.

Transcript

1. Selenium for Pythonistas Add real browsers to your Utility Belt! sso@saucelabs - @santiycr - Sauce Labs
2. Who's this dude? Santiago Suarez Ordoñez Lead Backend Developer - Sauce Labs Committer - Selenium Project 6+ years on Selenium and Python
3. How about Sauce Labs? Browsers in the cloud Test mobile and web apps in parallel +150 OS/Browser platforms Videos, screenshots, logs, badges, FLOSS
4. Agenda Selenium is just a library Testing best practices Selenium best practices Advanced features Debugging Q&A
5. Selenium History and Goals
6. How do I use it? Demo!
7. What people use it for? Common use cases for real browsers
8. Let's focus on testing That's what you're here for
9. DRY That's what you're here for
10. MOCK ALL THE THINGS!! If you didn't write it, don't rely on it
11. Write small tests Less is more
12. :,(
13. Avoid inter-test dependencies Independent tests are good!
14. Tests Start Test Create Account (User A) Test Login (User A) Test Change Password (User A) Test Close Account (User A)
15. Run tests automatically CI, pre-commit, CD, monitoring
16. Keep your build green 100% green is the only green
18. Make writing tests easy If it takes > 30 min, I'm not gonna do it
19. Now regarding Selenium There's lots of Selenium best practices
20. Do Not Use Selenium! No, seriously!
21. Generate application state The UI is the slowest path to any state in your app
22. Use Guinea Pigs Test complex widgets out of app workflows
24. Parallelize Browsers are slow and bulky. Throw hardware at the problem.
26. Use Page Object Models They are just code abstractions, you know?
27. Use Javascript execute_script("window.antigravity")
28. Use waits in your tests Implicit and Explicit waits will get you 90% there
29. Debugging failures Consumes 99% of your time while working with Selenium
30. Appium
31. Questions? Hot Sauce anyone?
32. sso@saucelabs - @santiycr - Sauce Labs Thanks!