Avoiding Flapping JS Tests in Rails

A presentation I gave at the West Michigan Ruby Users Group on August 3, 2015 on tips to avoiding flapping JS tests in Rails. A lot of this presentation was a live demo, so there are only a few slides.

Transcript

1. Avoiding Flapping JS Tests in Rails
2. Adam DeLong @DeLongShot Bell Park Software
3. Acceptance
4. Asynchronous Testing
5. Race Conditions
6. Test Thread Visit ‘/‘ Wait for response… Receive Response expect(page)…
7. Test Thread Visit ‘/‘ Wait for response… expect(page)… Wait for response… Background Thread Receive Request Formulating Response… Send Response Formulating Response…
8. Tips
9. UI
10. Action Methods
11. RSpec Matchers
12. Tools
13. Selenium Pros: Reliable Cons: Slow
14. Poltergeist Pros: Really Fast Cons: Flapping
15. Capybara-Webkit Pros: Fast Cons: Errors?
16. Resources
17. https://robots.thoughtbot.com/write-reliable-asynchronous-integration-tests-with- capybara Write Reliable, Asynchronous Integration Tests With Capybara