Cucumber lets software development teams describe how software should behave in plain text. The text is written in a business-readable domain-specific language and serves as documentation, automated tests and development-aid - all rolled into one format. Feature: OSDC 2010 Talk In Order to learn about using cucumber to test my Java Code As a OSDC attendee I want to attend the "You've got Cucumber in my Java....and it tastes great!!!" talk Scenario: Cucumber Introduction Given a lack of knowledge of cucumber And an interest in Java testing techniques When I am told what cucumber is And how I can use it Then I should have a basic understand of cucumber Scenario: Using Cucumber and Java Given I still have to program in Java And I want a better way to test my code When I am shown how to implement cucumber steps in Java And shown some cool demos Then I should be able to test my own Java code with cucumber

1. You've got Cucumber in my
Java....and it tastes great!!!
Emmanuel Bernard
> Aaron Walker
Hibernate Search in Actio
a.walker@base2services.com
> blog.emmanuelbernard.c
@aaronwalker
> twitter.com/emmanuelbe
www.base2services.com
base2Services Pty Ltd 2010

2. • BDD WTF???
base2Services Pty Ltd Commercial in Confidence 2010

3. BDD
~ Behaviour Driven Development ~
“BDD facilitates agile development, which is an
approach to develop functional software, within
reasonable timeline, making everyone happy, without
killing anyone, or
burning down any bank.”
base2Services Pty Ltd 2010

4. BDD's Core Principles
• It's all behaviour
“ The business & technology people should be
speaking the same words when referring to the
same idea,there should not be any translator.”
Behaviour: the addition of N values should yield the
summation of them
Example: the addition of 2 + 4 +1 should yield 8
base2Services Pty Ltd 2010

5. BDD's Core Principles
• Deliver stakeholder value
“ Whatever you are doing, it should be delivering
business value, or increasing our ability to deliver
value, if the activity doesn't achieve this, stop
doing it”
base2Services Pty Ltd 2010

6. Cucumber
$'
(
• Is not something your mother
made you eat
• a tool for functional testing
• by Aslak HellesØy, many other
nice people
• allows non-technies to express
app's functions in plain text
• plain text serves as
documentation executable
examples
base2Services Pty Ltd 2010

7. YES....plain text
%% +
base2Services Pty Ltd 2010

8. Given | When |Then
• GIVEN ... setting up system to a known
state
• WHEN ... exercising an event
• THEN ... verifying an outcome
base2Services Pty Ltd 2010

9. An now for the JAVA
• Cuke4Duke
• Cucumber support for the JVM:
• Java, Scala, Groovy, Clojure, Ioke,
Javascript, Spring, Guice, PicoContainer,
WebDriver, Ant and Maven
• http://github.com/aslakhellesoy/cuke4duke/
base2Services Pty Ltd 2010

10. Enough Slide-ware
Show me the Code!!!
base2Services Pty Ltd 2010

11. Questions
• http://cukes.info/ - Cucumber
• http://github.com/aslakhellesoy/cucumber
• http://github.com/aslakhellesoy/cuke4duke
• a.walker@base2services.com
• github.com/aaronwalker
base2Services Pty Ltd 2010