Gojko Adzic Cucumber

Behaviour Driven Development with Cucumber Gojko Adzic http://gojko.net @gojkoadzic

Cucumber goes a long way to stay out of your way • Generating code • Support for lists and tabular data • Pending marks • Tags • JUnit-style XML output • Integrated with all popular platforms and web test tools

Integrated with almost everything

Basic structure Feature: Hello World In order to ensure that my installation works As a developer I want to run a quick Cucumber test Scenario: Hello World Given The Action is Hello When The Subject is World Then The Greeting is Hello, World.

Steps integrate and protect specifications against code changes

It will generate example code

Or in C# [Given("^The Action is ([A-z]*)$")] public void ActionIs(String action) { this.action = action; } [When("^The Subject is ([A-z]*)$")] public void SubjectIs(String subject) { this.subject = subject; } [Then(@"The Greeting is ([^.]*).")] public void CheckGreeting(String greeting) { Assert.AreEqual(greeting, action + ", "+subject) ; }

Or Java @Given("The Action is (.*)$") public void setAction(String action){ this.action=action; } @When("^The Subject is (.*)$") public void setSubject(String subject){ this.subject=subject; } @Then("^The Greeting is ([^.]*).$") public void checkGreeting(String expected){ assertEquals(expected, action + ", " + subject); }

It's green like a cucumber when everything is fine

And red when something is wrong

cucumber -f html

You can use other languages, including LOLCATS OH HAI: STUFFING MISHUN: CUCUMBR I CAN HAZ IN TEH BEGINNIN 3 CUCUMBRZ WEN I EAT 2 CUCUMBRZ DEN I HAS 2 CUCUMBERZ IN MAH BELLY AN IN TEH END 1 CUCUMBRZ KTHXBAI

Multiple steps Scenario: Multiple Givens Given one thing And another thing And yet another thing When I open my eyes Then I see something But I don't see something else

Common setup Feature: Multiple site support As a site owner I want to host blogs for different people In order to make gigantic piles of money Background: Given a global administrator named “Greg” And a blog named “Greg’s anti-tax rants” And a customer named “Dr. Bill” And a blog named “Expensive” Scenario: Dr. Bill posts to his own blog ....

The good parts • Plain English (or LOLCATS...) • Given-When-Then structure • Relatively easy to set up • Multiple report formats (HTML/PDF/JUnit XML) • Native-language step definitions protect against refactoring • Pico-container lightweight DI for JVM integration

Good/Bad? • No special test management tool • Stuck with G/W/T • No way to add images/other documentation to test • Stuck with plaintext files with no nice IDE support

http://github.com/henritersteeg/cuke4vs

More information • http://www.gojko.net • http://www.cukes.info • http://www.richardlawrence.info (Cuke4Nuke) • http://wiki.github.com/aslakhellesoy/cuke4duke/

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Gojko Adzic Cucumber

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