Why you should write tests for your application.

1. TATFT

2. Joren

3. @joren

4. TDD

5. Why?

6. Test what?
• Test what should happen
• Test what should NOT happen

7. Red green refactoring
• Add a test
• Run all tests
• Write Some code
• Run the tests again
• Refactor code
• Start over again

8. Regression tests
• Change environment
• Change code
• Is everything still working?

9. Different levels of testing
• Unit
• Functional
• Integration/BDD

10. Unit testing
• Most basic
• Database level
• Validations

11. Functional testing
• Lifecycle of objects
• Controllers

12. BDD

13. Integration tests - BDD
• Overall application functionalities
• Tell a story
• Walk through your application

14. Tell a story
Feature: Authenticating
In order to ensure safety of our app
As a developer
I want be sure authentication can't be compromised
Scenario: Authenticating with wrong password
Given I've created a user for my reseller account "Openminds"
When I go to the homepage
And I fill in the following:
| Login | me@example.com |
| Password | foobar |
And I press "Log in"
Then I should see "Couldn't log you in"

15. Test data
• Mock, stub
• Fixtures
• Factories

16. Tools

17. Cruisecontrol

18. Git blame

19. Cucumber, Selenium

20. Any questions?