Test Fixturing for Single Page Apps

A talk I originally gave at CodeHarbour in April 2016. It covers browser testing, the state of test fixtures today and a then moves on to my experiences writing test fixtures for Single Page JavaScript Web Applications

Transcript

1. Test Fixturing & Single Page Apps
2. About Me Mike Carter Software Architect at Holiday Extras We're still hiring!
3. Browser Testing What's a browser test? What's a fixture? Fixturing Today Server-side fixturing Client-side fixturing & problems Fixturing Single Page Apps Demo Single Page App fixturing at Holiday Extras Contents
4. Browser Testing
5. What's a Browser Test?
6. Testing in the browser
7. Close to real user experience
8. Can be automated
9. Browser Test Problems
10. Systems change and break
11. Browsers are non- deterministic
12. APIs can be slow
14. What Is A Test Fixture?
15. A pre-recorded response
16. Accessible to everyone
17. Replayed in tests
18. Why Fixture?
19. Test independently
20. Improve determinism
21. Improve test speed
22. Browser tests Mimic real users Can be unreliable Can be fixtured for reliability
24. Fixturing Today
25. Fixturing Server-Side
26. Plenty of helpful libraries "nock" "vcr" "fixtures"
27. Record, then replay
28. Great developer experience
29. Fixturing Single Page Apps
30. Need a separate service
31. Need to manage the service
32. Proxy & SSL issues
33. SaaS to the rescue? mockable.io apiary.io mocky.io
34. Poor developer experience
35. What's A Great Developer Experience?
36. No managing services
37. No SSL issues
38. No HTTP proxies
39. Record and replay
40. Fixturing Today Serverside fixturing is easy Single Page App fixturing is hard We know what we want
41. Truman
42. What is Truman?
43. Fixtures for single page apps
44. No service management
45. No SSL faff
46. No HTTP proxies
47. Record and replay
48. Internet Browser Single Page App Makes many JSON API calls JSON API 1 JSON API 2 n other APIs Truman Intercept, record, replay requests DB fixture storage DB fixture storage
49. Video
50. Truman at Holiday Extras
51. ~6000 bookings/day
52. 40 developers together
53. Failures ~30% to <3%
54. Speed improvements
55. Accessible to everyone
57. What is Truman? Simple fixturing for Single Page Apps Battle tested Stability & speed
58. Links https://github.com/holidayextras/truman
59. Thank you @mcarterj