Moving to tdd bdd

Moving to tdd bdd

• 1.
  Acceptance Test DrivenDevelopment (ATDD) Automated Acceptance Testing (AAT) Behaviour Driven Development (BDD) Pioneered by Dan North 2006
• 2.
  What are thegoals? What's in it for The Development Team? What is it going to cost The Development Team? What's in it for the business? What is it going to cost the business? What does it mean to be doing BDD or ATDD Tooling options? How to deal with push back from management or team members.
• 3.
  Goals ● Communication bridge ● Measurability ● Ultimate visibility ● Assistance in being able to deliver every Sprint ● Provide confirmation that we have implemented specification ● Code that is testable, of high quality, maintainable, extensible ● RoI ● Write less code
• 4.
  Beware! Higher level tests= more expensive to create and maintain Slower to run, not run in CI, usually run in nightly build ● Potential for latency in the development cycle ● Developers less likely to run them manually ● Faults take longer to locate and fix
• 5.
  What's in itfor the Devs? Clear, concise and often terse automatable specifications Living (always up to date) documentation Confidence we're only writing what's needed Clarification of assumptions Product quality Unit tests tell us our software works... BDD tells us it does what the customer wants Instant feedback Assists in tight iterations
• 6.
  Cost to theDevelopment Team? Paradigm shift Forced into active engagement Finding unit test and mocking frameworks Learning curve Mocking frameworks I've evaluated recently: ● NMock2, 3 ● Rhino Mocks ● TypeMock ● Moq
• 7.
  Cost of notdoing BDD ● Product quality ● Predictability ● Accountability ● Rework... Ultimately costing the business.
• 8.
  What's in itfor the Business? ● Executable, living specifications providing assurance that the business functionality is “Done” ● Confidence in The Scrum Team ● Solid development KPI ● Visibility of what to expect from a Done increment ● Visibility into how much business value is being delivered ● Predictability. Empowerment ● Higher product quality = less money spent on rework and maintenance ● Confidence that not only is the product being built correctly... but also that the correct product is being built
• 10.
  Cost to theBusiness? ● A little team planning and a spike on tools ● PO and stakeholders to understand what they are asking for.
• 11.
  Cost of notdoing BDD ● Visibility ● Forecast-ability ● Ability to make informed decisions ● Software that does what it should do. ● Speed to market. Software is a liability until it's released.
• 12.
  How do wedo it? → Once tools are chosen → At the beginning of the Sprint → Test condition workshop... Search BinaryMist on how-to-optimise-your-testing-effort
• 14.
  Resources: You'll find everythingyou need here: https://github.com/techtalk/SpecFlow/wiki/Documentation
• 15.
  Resources: Best Intro Video: http://www.watchmecode.net/jasmine-standalone#preview StandaloneRunner: https://github.com/pivotal/jasmine/downloads Best Intro Doc: http://pivotal.github.com/jasmine/ Serenity Runner with .NET: http://lostechies.com/josharnold/2012/02/25/running-jasmine-specs-in-d
• 16.
  FitNesse Resources: Two Minute Example: http://fitnesse.org/FitNesse.UserGuide.TwoMinuteExample TestDriven .NET Development with FitNesse by Gojko Adzic Start here with Installation: http://fitnesse.org/FitNesse.UserGuide.DownloadingAndInstallingFitNes FitSharp: https://github.com/jediwhale/fitsharp/downloads Source: https://github.com/unclebob/fitnesse
• 17.
  Dealing with pushback This is never going to be easy. Books I've found helpful: ● Fearless Change: Patterns for Introducing New Ideas by Mary Lynn Manns and Linda Rising ● Change Agent: Engaging your passion to be the one who makes a difference by Os Hillman
• 18.
  Resources ● If not already TDD'ing http://blog.binarymist.net/2012/12/01/moving-to-tdd/ ● Guidance on prioritising areas to test that give biggest bang for your buck http://blog.binarymist.net/2012/03/24/how-to-optimise-your-testing-ef ● Book: Specification By Example by Gojko Adzic