Cucumber is a tool that supports behavior-driven development (BDD). It allows non-technical or business teammates to write acceptance tests in a natural language format called Gherkin. Developers then implement the tests as code using a specific programming language. Cucumber tests provide documentation for software features and ensure code meets requirements from a business perspective.

1. Cucumber
ihower@handlino.com

2. about me
• (a.k.a ihower)
http://ihower.idv.tw/blog/
•
http://handlino.com
http://registrano.com

3. Q:
In order ...
As a COSCUP 2009 attendee
I want ...

4. Q:
In order ... [business value]
As a COSCUP 2009 attendee [role]
I want ... [feature]

5. ?
What’s your acceptance criteria?

6. Scenario: COSCUP 2009
Given
When ihower
Then
And

7. “I believe that the hardest part of software projects, the
most common source of project failure, is
communication with the customers and users of that
software.
By providing a clear yet precise language to deal with
domains, a DSL can help improve this communication.”
Martin Fowler

8. “
(DSL)
”
Martin Fowler

9. (DSL)
?

10. Cucumber
Ruby
Feature

11. Cucumber Feature
Feature:
{
Scenario:
Given < >
And < >
When < >
And < >
Then < >
And < >

12. Given
Given /^ (.*)$/ do |fruit|
#.... your test code
assert_equal(fruit, ' ')
end
Ruby

13. Given
Given /^ (.*)$/ do |fruit|
#.... your test code
assert_equal(fruit, ' ')
end
Ruby

14. Given
Regexp match
Given /^ (.*)$/ do |fruit|
#.... your test code
assert_equal(fruit, ' ')
end
Ruby

15. Cucumber
• Ruby and Rails
• JRuby and Java
• IronRuby and .NET
• FunFX and Flex
• Web apps in any lanuages, with:
• Watir, Selenium, Mechanize, Webrat

16. Cucumber огурец Russian
concombre French
Japanese
Okurkový Czech
Gurke German
Cucumber English
pepino Spanish
!! Korean
cetriolo Italian
gurka Swedish
agurk Danish
castravete Romanian
Arabic ‫ﺍﳋﻴﺎﺭ‬
ogórek Polish
ketimun Indonesian
Kurk Estonian
Hebrew ‫מְלָפְפֹון‬
dưa chuột Vietnamese
Cogombre Catalan
uhorka Slovak
CUCUMBR LOLCats
gurķis Latvian
Agurk Norwegian
Agurkas Lithuanian
黄 !! Korean
Salátauborka Hungarian
gurka Swedish
Kurkku Finnish
castravete Romanian
Краставица Bulgarian
ogórek Polish
Pepino Portuguese
Kurk Estonian
dưa chuột Vietnamese
uhorka Slovak
gurķis Latvian
Agurkas Lithuanian
Salátauborka Hungarian
Kurkku Finnish
Краставица Bulgarian
Pepino Portuguese

18. Feature
:
:
3
2
divide
1.5

19. Ruby code
Given / (d+)/ do |n|
@calc.push n.to_i
end
When / (w+)/ do |op|
@result = @calc.send op
end
Then / (.*)/ do |result|
@result.should == result.to_f
end

20. Web Integration Testing

21. Feature:
Scenario:
Given I am on the "1934356085" book page
When I press "Add to Cart"
Then I should see "Programming Ruby 1.9"

22. Ruby Code
Given /^I am on (.+)$/ do |page_name|
visit path_to(page_name)
end
When /^I press "([^"]*)"$/ do |button|
click_button(button)
end
Then /^I should see "([^"]*)"$/ do |text|
response.should contain(text)
end

23. Ruby Code
Given /^I am on (.+)$/ do |page_name|
visit path_to(page_name)
end
When /^I press "([^"]*)"$/ do |button|
click_button(button)
end
Then /^I should see "([^"]*)"$/ do |text|
response.should contain(text)
end

24. {
1:
2: Ruby
Outside
3: (fail)
4. (pass)
Inside { 4-1.
4-2
Unit Test (Fail)
(Pass)

25. thank you.
http://cukes.info/