{"id":36,"date":"2011-04-14T20:51:21","date_gmt":"2011-04-14T20:51:21","guid":{"rendered":"http:\/\/agilestaffordshire.org\/?p=36"},"modified":"2013-02-19T23:09:33","modified_gmt":"2013-02-19T23:09:33","slug":"april-meeting-test-driven-development","status":"publish","type":"post","link":"https:\/\/agilestaffordshire.org\/agile\/april-meeting-test-driven-development\/","title":{"rendered":"April Meeting: Test Driven Development"},"content":{"rendered":"<h2><img loading=\"lazy\" class=\"alignright size-medium wp-image-51\" title=\"This is Royal Wedding related. It's all about test driven development - bar codes, see. I am some spare credits at iStockPhoto so thought I'd brighten up the post.\" src=\"http:\/\/agilestaffordshire.org\/wp-content\/uploads\/2011\/04\/iStock_000013409536XSmall-300x199.jpg\" alt=\"\" width=\"300\" height=\"199\" srcset=\"https:\/\/agilestaffordshire.org\/wp-content\/uploads\/2011\/04\/iStock_000013409536XSmall-300x199.jpg 300w, https:\/\/agilestaffordshire.org\/wp-content\/uploads\/2011\/04\/iStock_000013409536XSmall.jpg 425w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>Details<\/h2>\n<p>Date: Tues 26th April 2011<\/p>\n<p>Time: 7:15pm start to a 9:15pm (doors open at 6:30pm and close when the till&#8217;s full)<\/p>\n<p>Location:\u00a0<a title=\"The Pie and Ale House, Stafford\" href=\"http:\/\/www.pieandale.com\/\">http:\/\/www.pieandale.com<\/a><\/p>\n<p>Theme:\u00a0Test Driven Development<\/p>\n<h2>Talk<\/h2>\n<p>A short talk from Shaun Finglas about his experiences in developing a version of Pong using test driven development, object oriented design principles, CRC and dependency injection. He&#8217;ll show us the production and test code, and explain design\u00a0decisions he&#8217;s made. Hopefully this will\u00a0illustrate\u00a0how\u00a0Agile software development techniques can improve games development by reducing close coupling, driving a better API and promoting the correct level of abstraction.<\/p>\n<h2>Exercise<\/h2>\n<p>We&#8217;ll try and get 90 minutes for the programming part of the meeting so that we can try a kata with a few more issues to solve. Having discussed the best kata to use for this session with a few people we&#8217;ve selected &#8220;Back to the Checkout&#8221; from Dave Thomas: \u00a0<span style=\"font-family: 'Times New Roman'; line-height: normal; font-size: medium;\"><\/p>\n<p style=\"display: inline !important;\"><a href=\" http:\/\/codekata.pragprog.com\/2007\/01\/kata_nine_back_.html\">http:\/\/codekata.pragprog.com\/2007\/01\/kata_nine_back_.html<\/a><\/p>\n<p><\/span><\/p>\n<p>This involves producing a supermarket checkout application that takes a number of price reduction offers. The exercise starts with a simple &#8220;scan&#8221; method that is called again and again when the checkout operative passes a product over the bar code scanner. The way the bill is produced is open ended, but the system needs take into account offers like &#8220;buy one get on free&#8221;, &#8220;buy two get on free&#8221; etc which are represented in the post as lists of SKUs (stock keeping units).<\/p>\n<p>We&#8217;ve chosen this kata because the final solution has some interesting problems to solve regarding the coupling of the classes produced. As we&#8217;re still introducing TDD to some people I believe this will illustrate that test driving code can produce a better API with better separation of behaviour in addition to providing the benefits of security, communication and confidence to change that we have already seen.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Details Date: Tues 26th April 2011 Time: 7:15pm start to a 9:15pm (doors open at 6:30pm and close when the till&#8217;s full) Location:\u00a0http:\/\/www.pieandale.com Theme:\u00a0Test Driven Development Talk A short talk from Shaun Finglas about his experiences in developing a version of Pong using test driven development, object oriented design principles, CRC and dependency injection. He&#8217;ll [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false},"categories":[3],"tags":[],"jetpack_featured_media_url":"","jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p4r37M-A","_links":{"self":[{"href":"https:\/\/agilestaffordshire.org\/wp-json\/wp\/v2\/posts\/36"}],"collection":[{"href":"https:\/\/agilestaffordshire.org\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agilestaffordshire.org\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agilestaffordshire.org\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/agilestaffordshire.org\/wp-json\/wp\/v2\/comments?post=36"}],"version-history":[{"count":1,"href":"https:\/\/agilestaffordshire.org\/wp-json\/wp\/v2\/posts\/36\/revisions"}],"predecessor-version":[{"id":422,"href":"https:\/\/agilestaffordshire.org\/wp-json\/wp\/v2\/posts\/36\/revisions\/422"}],"wp:attachment":[{"href":"https:\/\/agilestaffordshire.org\/wp-json\/wp\/v2\/media?parent=36"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agilestaffordshire.org\/wp-json\/wp\/v2\/categories?post=36"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agilestaffordshire.org\/wp-json\/wp\/v2\/tags?post=36"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}