Unit Tests Aren't Enough
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Covers integration testing with selenium and cucumber.
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Unit Tests Aren't Enough
- 1. Unit Tests Aren’t Enough and your QA guy can’t regression test for you...
- 2. Will this test save you? def test_create_new_widget post :create_widget assert_response :success end
- 3. With this code? # view: <%= form_for :widget %> <%= submit_tag “Create” %> <% end %> # controller: def create; puts “doing nothing”; end
- 4. The Individual Pieces Work...
- 5. ... but your application does not!
- 6. What do we do?
- 7. QA Guy!
- 8. Benefits
- 9. Would he find the bug from before?
- 10. What if the bug came from a refactoring?
- 11. YOU are ultimately responsible for your app
- 12. Let’s Automate
- 13. Hello, Selenium!
- 14. The Code
- 15. The API
- 16. Programmers still do the testing!
- 17. Hello, Cucumber!
- 18. QA Can Write This Scenario: Searching on Google Given I am on the homepage When I fill in “q” with “cukes” And I press “Google Search” Then I should see “cukes.info”
- 19. Scenario: Searching on Google
- 20. Given I am on the homepage
- 21. When I fill in “q” with “cukes”
- 22. And I press “Google Search”
- 23. Then I should see “cukes.info”
- 24. The Output Scenario: Searching on Google # features/google_search.feature:6 Given I am on the homepage # features/step_definitions/webrat_steps.rb:6 When I fill in "q" with "cukes" # features/step_definitions/webrat_steps.rb:29 And I press "Google Search" # features/step_definitions/webrat_steps.rb:17 Then I should see "cukes.info" # features/step_definitions/webrat_steps.rb:121 1 scenario (1 passed) 4 steps (4 passed) 0m10.206s
- 26. Webrat Caveats • Won’t detect elements hidden by a class • Won’t click things that aren’t links or buttons (usually not a big deal)
- 27. Beyond Webrat When /^I search for “([^”])”$/ do |s| When %Q|I fill in “q” with “#{s}”| And %Q|I press “Google Search”| end
- 31. Commands • Given, When, Then, And •! • define step • run feature • show history • show step definitions
- 32. Resources • http://cukes.info • http://gitrdoc.com/brynary/webrat/tree/master • http://github.com/trotter/cuke-talker
Notes de l'éditeur
- It won&#x2019;t because the test code was testing create_widget, not create
- Offload the work to someone else. He behaves like a user and finds problems the user would find.
- He certainly would
- Probably not, the QA guy typically only checks new features and will do a regression test every month or so.
- Came out of work at Thoughtworks. Works on all platforms with all browsers and a ton of languages have clients
- Is your QA guy going to learn a full on programming language?
- There&#x2019;s a lot here and your QA guy isn&#x2019;t going to learn it all
- This doesn&#x2019;t seem too good. We&#x2019;d much rather have QA / business involved (and hopefully even doing the work).
- Scenario tells what we&#x2019;re testing
- Given sets up assumptions about your Scenario
- When performs actions
- And duplicates whatever came before
- Then is your assertion
- And let&#x2019;s see this run in cucumber
- 90% of what you do is click a link, fill in text, and assert that text is present. Webrat handles these for you.
- Add your own step definitions in features/step_definitions/*.rb. There are some step_definitions your QA guy can&#x2019;t implement and you&#x2019;ll have to help.
- Features go at the top level. Steps definitions go in step_definitions. Support files go in support. Cucumber will load everything.
- Writing cucumber features can be time consuming. Cuke-talker is a command line IDE for writing them.
- cuke-talker isn&#x2019;t even close to done. We&#x2019;re looking for help (yay open source!)
- Given, When, Then, And behave just like they do in cucumber ! lets you execute arbitrary ruby define step opens a subrepel for defining a step feature will run a feature file from your features dir (will soon be run feature) show history shows all your previous Given, When, Then, Ands show step definitions shows all the steps you&#x2019;ve defined
- Yay Pictures!