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Lets cook cucumber !!

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This document provides an overview of Cucumber, a behavior-driven development framework. It discusses what BDD is, the benefits it provides like usability, fewer defects, and living documentation. Popular BDD tools like Cucumber, Jasmine and JBehave are mentioned. Cucumber is introduced in more detail, explaining how it executes scenarios using a Given, When, Then format and supports multiple programming languages. Hands-on examples demonstrate features like data and table-driven execution, background, hooks, tags and reports. Suggested additional reading materials on BDD and Cucumber are also provided.

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Let’s cook cucumber!! vodQA Pune 2016 Pranjali Talekar Amit Gundiyal Abhay Dalvi Pranathi Birudugadda
Agenda Welcome note, Expectation setting, Group split up Installations Discussion about BDD and Cucumber Setup project framework Hands-on workshop Advanced Features Demo Q&A + Feedback
#vodqa #thoughtworks
INTRODUCTION TO BDD
BDD is... “Behaviour-driven development is about implementing an application by describing its behaviour from the perspective of its stakeholders” - Dan North
BDD (Contd…) It is an agile software development practice that has evolved from TDD (Test Driven Development). The premise of BDD is to bring technology and business together. So, As the name suggests, the practice recommends defining the behavior upfront and using the same to drive the product development.
It has evolved from TDD. So there was something amiss in TDD that led to this evolution. Right ? No clarity of how much to test. i.e. should we test for negative numbers, should we test for decimal etc. There is a clear chance of missing an expected behavior of the method while implementing it. It is not driven through a specification or the so called desired behavior. And because of this, the boundaries are not clear. Why BDD ?
Mindset Tooling support BDD expects the desired behavior to be written in a Given, When, Then format... Given describes the pre-requisites for the expectation When describes the actual steps to carry on the effect of the expectation Then describes the verification that the expectations were met. How to adopt BDD ?
Benefits of BDD Usability System functionality is more deliberate Developer is placed into the paradigm of a user of the system Fewer defects Live documentation Living specification Tests describe the behaviour of the system Higher code quality Testable code tends to follow better design patterns ( more modular code , flexible , understandable etc). Confidence Tests cover smaller, incremental slices of the system. Tests act as safety net covering existing functionality. Faster Delivery Tests allow new features to be added more easily without breaking existing ones. Misunderstanding of requirements appear earlier in development cycle.
Popular BDD testing Tools Cucumber (https://cucumber.io) Jasmine (http://jasmine.github.io) JBehave (http://jbehave.org) Concordian (http://concordion.org) easyb (http://easyb.org)
Lets cook cucumber !!
Introduction To Cucumber ❏ Type : Behavior driven development framework / Collaboration tool / Test tool ❏ Written in : Ruby ❏ Operating system : Cross-platform ❏ Supports about 60+ languages ❏ Automation can be written in own favorite language ( Ruby, Java, c#.net , JavaScript, Scala, Groovy, Jython, Python, Perl, C++ etc) ❏ Helps to execute plain text functional descriptions as automated tests ❏ Writing scenarios before code enables programmers to be guided by an unambiguous specification
Lets cook cucumber !!
How Cucumber executes a scenario ?
INTRODUCTION TO FRAMEWORK
Framework Ecosystem
In a tool we want... Simplicity because who doesn’t like simple!! Maintainability because everyone has been on a long running project and we know it is hell to keep tests working Customized because we all have our own preferences Speed because we all have that need for speed
Understanding Gherkin Syntax Feature: Cucumber mandates to write a brief feature description of the scenarios you want to write in a feature file.Provide a high-level description of a software feature, and to group related scenarios. Scenario: Before writing any scenario it also mandates the user to write a brief scenario description. Given/When/Then/And - Every step in your scenario would be starting with one of them.
Example - Gherkin Syntax Given [Pre - condition] When [Action performed] Then [Result] Example: Feature: Refund item Scenario: John returns a faulty microwave Given John has bought a microwave for $100 And he has a receipt When he returns the microwave Then John should be refunded $100
HANDS ON
Advanced Features Demo Data driven Execution Table driven execution Background Hooks Tags Running through CLI ( JUnit way ). Reports
Suggested Reading http://dannorth.net/introducing-bdd/ http://behaviourdriven.org/ http://guide.agilealliance.org/guide/bdd.html http://dannorth.net/2012/05/31/bdd-is-like-tdd-if/ http://lizkeogh.com/behaviour-driven-development/ http://lizkeogh.com/2012/05/30/showcasing-the-language-of-bdd/ http://benmabey.com/2008/05/19/imperative-vs-declarative-scenarios-in-user- stories.html The Cucumber Book
THANK YOU For questions or suggestions: vodqa-pune@thoughtworks.com pranathi.b@thoughtworks.com abhayda@thoughtworks.com amit.gundiyal@thoughtworks.com pranjalt@thoughtworks.com

More Related Content

Lets cook cucumber !!

  • 1. Let’s cook cucumber!! vodQA Pune 2016 Pranjali Talekar Amit Gundiyal Abhay Dalvi Pranathi Birudugadda
  • 2. Agenda Welcome note, Expectation setting, Group split up Installations Discussion about BDD and Cucumber Setup project framework Hands-on workshop Advanced Features Demo Q&A + Feedback
  • 5. BDD is... “Behaviour-driven development is about implementing an application by describing its behaviour from the perspective of its stakeholders” - Dan North
  • 6. BDD (Contd…) It is an agile software development practice that has evolved from TDD (Test Driven Development). The premise of BDD is to bring technology and business together. So, As the name suggests, the practice recommends defining the behavior upfront and using the same to drive the product development.
  • 7. It has evolved from TDD. So there was something amiss in TDD that led to this evolution. Right ? No clarity of how much to test. i.e. should we test for negative numbers, should we test for decimal etc. There is a clear chance of missing an expected behavior of the method while implementing it. It is not driven through a specification or the so called desired behavior. And because of this, the boundaries are not clear. Why BDD ?
  • 8. Mindset Tooling support BDD expects the desired behavior to be written in a Given, When, Then format... Given describes the pre-requisites for the expectation When describes the actual steps to carry on the effect of the expectation Then describes the verification that the expectations were met. How to adopt BDD ?
  • 9. Benefits of BDD Usability System functionality is more deliberate Developer is placed into the paradigm of a user of the system Fewer defects Live documentation Living specification Tests describe the behaviour of the system Higher code quality Testable code tends to follow better design patterns ( more modular code , flexible , understandable etc). Confidence Tests cover smaller, incremental slices of the system. Tests act as safety net covering existing functionality. Faster Delivery Tests allow new features to be added more easily without breaking existing ones. Misunderstanding of requirements appear earlier in development cycle.
  • 10. Popular BDD testing Tools Cucumber (https://cucumber.io) Jasmine (http://jasmine.github.io) JBehave (http://jbehave.org) Concordian (http://concordion.org) easyb (http://easyb.org)
  • 12. Introduction To Cucumber ❏ Type : Behavior driven development framework / Collaboration tool / Test tool ❏ Written in : Ruby ❏ Operating system : Cross-platform ❏ Supports about 60+ languages ❏ Automation can be written in own favorite language ( Ruby, Java, c#.net , JavaScript, Scala, Groovy, Jython, Python, Perl, C++ etc) ❏ Helps to execute plain text functional descriptions as automated tests ❏ Writing scenarios before code enables programmers to be guided by an unambiguous specification
  • 14. How Cucumber executes a scenario ?
  • 17. In a tool we want... Simplicity because who doesn’t like simple!! Maintainability because everyone has been on a long running project and we know it is hell to keep tests working Customized because we all have our own preferences Speed because we all have that need for speed
  • 18. Understanding Gherkin Syntax Feature: Cucumber mandates to write a brief feature description of the scenarios you want to write in a feature file.Provide a high-level description of a software feature, and to group related scenarios. Scenario: Before writing any scenario it also mandates the user to write a brief scenario description. Given/When/Then/And - Every step in your scenario would be starting with one of them.
  • 19. Example - Gherkin Syntax Given [Pre - condition] When [Action performed] Then [Result] Example: Feature: Refund item Scenario: John returns a faulty microwave Given John has bought a microwave for $100 And he has a receipt When he returns the microwave Then John should be refunded $100
  • 21. Advanced Features Demo Data driven Execution Table driven execution Background Hooks Tags Running through CLI ( JUnit way ). Reports
  • 23. THANK YOU For questions or suggestions: vodqa-pune@thoughtworks.com pranathi.b@thoughtworks.com abhayda@thoughtworks.com amit.gundiyal@thoughtworks.com pranjalt@thoughtworks.com

Editor's Notes

  1. Talk about the agenda What is BDD according to you guys?
  2. this looks professional