BDD Testing With Cucumber

A short presentation on how bdd testing with cucumber works and helps you generate easy to understand tests for your business stakeholders

Transcript

1. BDD Testing with Cucumber Dev.Talk. Zürich. 19. Sept 2012
2. BDD Business •  Domain driven design Technology •  Test driven development
3. Core Principles 1.  Enough is enough do as much planning, analysis, and design as you need, but no more. 2.  Deliver stakeholder value everything you do should deliver value or increase your ability to do so. 3.  It’s a behavior everyone involved should have the same way of talking about the system and what it does.
4. describe the behavior of your software in a very understandable way
5. 1 Describe Behaviour 2 Write step definition 3 Run and fail 4 Write code to make step pass 5 Run and pass
6. Behavior Feature: <short description> <story> <scenario 1> <scenario n> WHO? As a <role> WHAT? I want <feature> WHY? so that <business value> Scenario:  <descrip*on>    Given  <precondi*ons,  context>    [And]  <addi*onal  precondi*ons>    When  <ac*on,  behaviour>    Then  <postcondi*ons>    [And]  <addi*onal  postcondi*ons>  
7. Step definition •  Regex based •  Reusable •  Cucumber gives you copy & paste code
8. Human Language support # language: de Funktionalität: Addition Um dumme Fehler zu vermeiden möchte ich als Matheidiot die Summe zweier Zahlen gesagt bekommen Szenariogrundriss: Zwei Zahlen hinzufügen Angenommen ich habe <Eingabe_1> in den Taschenrechner eingegeben Und ich habe <Eingabe_2> in den Taschenrechner eingegeben Wenn ich <Knopf> drücke Dann sollte das Ergebniss auf dem Bildschirm <Ausgabe> sein Beispiele: | Eingabe_1 | Eingabe_2 | Knopf | Ausgabe | | 20 | 30 | add | 50 | | 2 | 5 | add | 7 | | 0 | 40 | add | 40 |
9. What about Java, .net, …? Java: Cucumber-Jvm •  Pure Java •  Supports: Java, JavaScript, JRuby, Scala, Python, Groovy, Ioke .NET: IronRuby •  Cucumber Wrapper for IronRuby
10. Testing possibilities… •  Selenium browser testing •  Webrat acceptance testing •  Interface testing (example mozo poc) •  Many many more – just take a look at the cucumber tutorials
11. More Information https://github.com/cucumber/cucumber/wiki http://behaviour-driven.org/