The document discusses RSpec, a behavior-driven development (BDD) framework for testing Ruby code. It describes how RSpec allows writing tests in a natural language style using "should" statements. Examples are provided for different types of RSpec tests, including model, controller, and view tests. Shared examples, custom matchers, and integration with Cucumber for writing tests in a storytelling format are also covered. The document concludes with information on installing and running RSpec and generating reports from test results.

1. RSpec

2. Freelancer
• http://simplabs.com
• http://xing.com/profile/Marco_OtteWitte
• http://github.com/marcoow

3. Buzzwords
TDD

4. Buzzwords
X
TDD

5. Buzzwords
XTDD
BDD

6. BDD

7. BDD
Beschreiben von Verhalten

8. BDD
Beschreiben von Verhalten
mit natürlicher Sprache bzw.
Domänen- Sprache

9. BDD
Beschreiben von Verhalten
mit natürlicher Sprache bzw.
Domänen- Sprache
Spezifikation und
(Regressions)- Tests in einem

10. 1 class TaskTest < ActiveSupport::TestCase
2
3 test 'Test::Unit is rocking' do
4 assert Test::Unit.rocking?
5 end
6
7 end

11. 1 describe RSpec do
2
3 it 'should be rocking' do
4 RSpec.should be_rocking
5 end
6
7 end

12. Syntactic Sugar
RSpec.should be_rocking
=>
RSpec.rocking?

13. Basics
1 describe Something do
2
3 before do
4 @thing = Something.new
5 end
6
7 it 'should behave in some way' do
8 @thing.action.should == 'expected'
9 end
10
11 after(:all) do
12 Something.destroy_all
13 end
14
15 end

14. Model Specs
1 describe Task do
2
3 describe 'validation' do
4
5 before do
6 @task = Task.new(:title => 'test task')
7 end
8
9 it 'should succeed when all attributres are set' do
10 @task.should be_valid
11 end
12
13 end
14
15 end

15. Controller Specs
1 describe TasksController do
2
3 describe 'handling GET /tasks' do
4
5 it quot;should render the 'tasks/index' templatequot; do
6 get :index
7
8 response.should render_template('tasks/index')
9 end
10
12 end
13
14 end

16. View Specs
1 describe 'tasks/index' do
2
3 before do
4 @task = stub_model(Task)
5 assigns[:tasks] = [@task]
6 end
7
8 it 'should render a link to tasks/new' do
9 render('tasks/index')
10
11 response.should have_tag('a[href=?]', new_task_path)
12 end
13
14 end

17. Demo

18. Shared Examples (1)
1 describe 'a secure action', :shared => true do
2
3 describe 'without a logged-in user' do
4
5 it 'should redirect to new_session_path' do
6 do_request
7
8 response.should redirect_to(new_session_path)
9 end
10
11 end
12
13 end

19. Shared Examples (2)
1 describe TasksController do
2
3 describe 'handling GET /tasks' do
4
5 it_should_behave_like 'a secure action'
6
7 # => redirect without logged-in user
8
9 end
10
11 end

20. Demo

21. Matchers
1 class RequireAttributeMatcher
2
3 def initialize(attribute)
4 @attribute = attribute
5 end
6
7 def matches?(model)
8 @model = model
9 model.send(quot;#{@attribute.to_s}=quot;.to_sym, nil)
10 return !model.valid?
11 end
12
13 end

22. Demo

23. Stories (Cucumber)
Given [Context]
When [Aktion]
Then [Business Value!]

24. Stories (Cucumber)
Scenario: Create Task
Given that there are no tasks
When I create task quot;task 1quot;
When I go to the tasks page
Then I should see quot;task 1quot;

25. Stories (Cucumber)
1 Given /^that there are no tasks$/ do
2 Task.destroy_all
3 end
4
5 When /^I create task quot;(.*)quot;$/ do |title|
6 post tasks_url, :task => { :title => title }
7 end
8
9 When /^I go to the tasks page$/ do
10 get tasks_url
11 end
12
13 Then /^I should see quot;(.*)quot;$/ do |title|
14 response.body.should =~ /#{title}/m
15 end

26. Demo

27. Installation
ruby script/plugin install git://github.com/
dchelimsky/rspec.git
ruby script/plugin install git://github.com/
dchelimsky/rspec-rails.git
ruby script/generate rspec

28. Autotest
sudo gem install ZenTest
RSPEC=true autotest
RSPEC=true AUTOFEATURE=true autotest

29. Demo

30. Report
[spec/rspec.opts]
--format html:doc/spec/report.html

31. Q&A

32. Ressourcen
• http://rspec.simplabs.com
• http://rspec.info/
• http://github.com/dchelimsky/rspec
• http://github.com/dchelimsky/rspec-rails
• http://github.com/aslakhellesoy/cucumber
• http://dannorth.net/introducing-bdd