Slides from

2. First things first
• Mario García
• Freelance
• Happily working with Grails every day
• Blamed for a felony I didn’t commit I ran away to
Ireland...still there!!
marioggar desmontandojava.blogspot.com
mariogarcia

3. What is this about?
because we don’t need to test...do we?

4. What is this about?
WE ARE
NOT
PERFECT

5. When do we realize?
WTF!!

6. Why I test?
• Do they make me flawless?
Nop, In fact they remind me every day
how bad I am
• Do they avoid bugs?me to detect them
Nop, but they help
before is too late

7. Sample Code
• https://github.com/mariogarcia/maroulette

8. Integration Tests
Why first???

9. Why first?
• ... because you do all your important stuff in
services, Don’t you MTF?

10. What to test?
• External systems integration:
• Database
• Web-services / Rest
• Queue system
• ...

11. Weapons
• Grails “inbuilt” integration tests
• 2.0.x > * Interactive mode & Guard Plugin
• Spock
• Fixtures
• Build Test Data

12. Grails Integration Tests
• By default
• JUnit Based
• The application is “UP AND RUNNING”
• Use the interactive mode to save time

13. Plugins
• Spock
• More natural way of writing tests
• Parameter tables ROCKS!!!
• Helps you to document!!!

14. Plugins
• Fixtures Plugin
• We can create common testing datasets
• Build Test Data Plugin
• Sometimes we don’t care about field values
• Just give me a valid persisted instance!!

15. Plugins
• Spock: http://grails.org/plugin/spock
• Fixtures: http://grails.org/plugin/spock
• Build Test Data: http://grails.org/plugin/spock
• Guard: http://grails.org/plugin/guard

16. Grails Integration Tests

17. Unit Testing
The easiest one?

18. Usual Suspects
• Controllers
• Taglibs
• UrlMappings
• Filters
• Other silly things...

19. Typical Case
• Testing a controller
• What the output view is gonna be if
• everything went ok ?
• everything went wrong ?
• Should the user see any message?
• Etc...

20. Weapons
• Grails Mocking
• Don’t test controllers with real services
• Use Mixins instead to simulate them
• Learn to create expectations

21. Weapons
• Spock Tables to the rescue!!!
• Natural way of doing use cases in your
controllers

22. Grails Unit Testing

23. Functional Testing
Is it working as the user expected?
Game Over!

24. Functional testing
• Plugins
• Functional Testing
• http://www.grails.org/plugin/functional-test
• Geb
• http://www.grails.org/plugin/geb

25. Functional Testing

26. Please, don’t hate JS
it’s cute, isn’t it?

27. Testing JS
• http://grails.org/plugin/jasmine
• http://grails.org/plugin/angularjs-resources
• casperjs
• https://github.com/ulrich/grails-casper-plugin

28. Q&A
Ask now or be quiet forever!!!