{"id":780,"date":"2014-04-28T12:55:17","date_gmt":"2014-04-28T09:55:17","guid":{"rendered":"http:\/\/blog.adrianbolboaca.ro\/?p=780"},"modified":"2020-01-15T22:02:55","modified_gmt":"2020-01-15T20:02:55","slug":"from-nothing-to-system-tests-code-cast","status":"publish","type":"post","link":"https:\/\/blog.adrianbolboaca.ro\/2014\/04\/from-nothing-to-system-tests-code-cast\/","title":{"rendered":"Legacy Coderetreat: Episode 1 &#8211; From Nothing to System Tests Codecast"},"content":{"rendered":"<h1>From Nothing to System Tests &#8211; Codecast<\/h1>\n<h3>Blog post series<\/h3>\n<p>This blog post is part of a series about legacy coderetreat and legacy code techniques you can apply during your work. Please click to see <a href=\"http:\/\/blog.adrianbolboaca.ro\/2014\/04\/legacy-coderetrea\/#sessions\">more sessions<\/a> about legacy code.<\/p>\n<h3>Codecast<\/h3>\n<p>Before starting to change any legacy system you need to know you will not introduce any defects when changing the code. So one way would be to stay on the safe side and start writing some automated tests. These tests can be Golden Master type of tests, they can be Characterization Tests, or anything else that might give you this certainty of correct changes in a later stage.<\/p>\n<p>This is a code cast in Java where I start covering with tests a simple code base. Please read the explanation of this technique in the <a href=\"http:\/\/blog.adrianbolboaca.ro\/2014\/04\/from-nothing-to-system-tests\/\">Part 2 \u2013 From Nothing to System Tests blog post<\/a>. Have fun!<\/p>\n<p>&nbsp;<\/p>\n<div class=\"epyt-video-wrapper\"><iframe loading=\"lazy\"  id=\"_ytid_72344\"  width=\"1110\" height=\"624\"  data-origwidth=\"1110\" data-origheight=\"624\" src=\"https:\/\/www.youtube.com\/embed\/iPuFiuZ9N2A?enablejsapi=1&#038;autoplay=0&#038;cc_load_policy=0&#038;cc_lang_pref=&#038;iv_load_policy=1&#038;loop=0&#038;modestbranding=1&#038;rel=1&#038;fs=1&#038;playsinline=0&#038;autohide=2&#038;theme=dark&#038;color=red&#038;controls=1&#038;\" class=\"__youtube_prefs__  epyt-is-override  no-lazyload\" title=\"YouTube player\"  allow=\"fullscreen; accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen data-no-lazy=\"1\" data-skipgform_ajax_framebjll=\"\"><\/iframe><\/div>\n<p>This session has some prerequisites:<\/p>\n<ul>\n<li>Good knowledge of unit testing and test doubles, especially mocks, stubs and fakes.<\/li>\n<li>Very good knowledge of the programming language you use. You often need to use some hacks that will allow you not to change the existing code and be able to test it.<\/li>\n<li>Open mind to new, sometimes mind-blowing, techniques and concepts.<\/li>\n<\/ul>\n<p>Further it is very important to have good knowledge about software design, especially techniques of decoupling the existing code. It would be a good thing that any attendee would know about the SOLID Principles and have basic knowledge about Design Patterns.<\/p>\n<a target=\"_blank\" href=\"https:\/\/drpeterscode.com\/bad-bot-exterminator-protects-wordpress-sites-from-hackers-cyber-ddos-dos-attacks.php\"><img src=\"https:\/\/blog.adrianbolboaca.ro\/wp-content\/plugins\/dpabottomofpostpage\/apixel1x1.jpg\" ><\/a><table><\/table>","protected":false},"excerpt":{"rendered":"<p>From Nothing to System Tests &#8211; Codecast Blog post series This blog post is part of a series about legacy coderetreat and legacy code techniques you can apply during your&hellip; <\/p>\n","protected":false},"author":3,"featured_media":2489,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[159,61,346],"tags":[139,162,262,256,255,89,113,49,146,147,55],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>From Nothing to System Tests - Codecast by Adrian Bolboac\u0103<\/title>\n<meta name=\"description\" content=\"By watching this video find how you can start with system tests on legacy code. System tests are a safety net. Ask about facilitating a legacy coderetreat.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.adrianbolboaca.ro\/2014\/04\/from-nothing-to-system-tests-code-cast\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"From Nothing to System Tests - Codecast by Adrian Bolboac\u0103\" \/>\n<meta property=\"og:description\" content=\"By watching this video find how you can start with system tests on legacy code. System tests are a safety net. Ask about facilitating a legacy coderetreat.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blog.adrianbolboaca.ro\/2014\/04\/from-nothing-to-system-tests-code-cast\/\" \/>\n<meta property=\"og:site_name\" content=\"Adrian Bolboaca\" \/>\n<meta property=\"article:published_time\" content=\"2014-04-28T09:55:17+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-01-15T20:02:55+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blog.adrianbolboaca.ro\/wp-content\/uploads\/2014\/04\/legacy-code-cast-ep-1.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1080\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Adrian Bolboaca\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Adrian Bolboaca\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/2014\/04\/from-nothing-to-system-tests-code-cast\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/2014\/04\/from-nothing-to-system-tests-code-cast\/\"},\"author\":{\"name\":\"Adrian Bolboaca\",\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/#\/schema\/person\/9894e1b2a4241be86991388625407d76\"},\"headline\":\"Legacy Coderetreat: Episode 1 &#8211; From Nothing to System Tests Codecast\",\"datePublished\":\"2014-04-28T09:55:17+00:00\",\"dateModified\":\"2020-01-15T20:02:55+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/2014\/04\/from-nothing-to-system-tests-code-cast\/\"},\"wordCount\":262,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/#\/schema\/person\/9894e1b2a4241be86991388625407d76\"},\"keywords\":[\"Automated Tests\",\"Characterization Tests\",\"Code cast\",\"Coderetreat\",\"Community\",\"Learning\",\"Legacy\",\"Programming\",\"System\",\"Tests\",\"Unit testing\"],\"articleSection\":[\"Code cast\",\"Legacy code\",\"Legacy Code Codecast\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/blog.adrianbolboaca.ro\/2014\/04\/from-nothing-to-system-tests-code-cast\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/2014\/04\/from-nothing-to-system-tests-code-cast\/\",\"url\":\"https:\/\/blog.adrianbolboaca.ro\/2014\/04\/from-nothing-to-system-tests-code-cast\/\",\"name\":\"From Nothing to System Tests - Codecast by Adrian Bolboac\u0103\",\"isPartOf\":{\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/#website\"},\"datePublished\":\"2014-04-28T09:55:17+00:00\",\"dateModified\":\"2020-01-15T20:02:55+00:00\",\"description\":\"By watching this video find how you can start with system tests on legacy code. 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Ask about facilitating a legacy coderetreat.\",\"breadcrumb\":{\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/2014\/04\/from-nothing-to-system-tests-code-cast\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blog.adrianbolboaca.ro\/2014\/04\/from-nothing-to-system-tests-code-cast\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/2014\/04\/from-nothing-to-system-tests-code-cast\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/blog.adrianbolboaca.ro\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Legacy Coderetreat: Episode 1 &#8211; From Nothing to System Tests Codecast\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/#website\",\"url\":\"https:\/\/blog.adrianbolboaca.ro\/\",\"name\":\"Adrian Bolboaca\",\"description\":\"Programmer, Trainer, Coach\",\"publisher\":{\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/#\/schema\/person\/9894e1b2a4241be86991388625407d76\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/blog.adrianbolboaca.ro\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/#\/schema\/person\/9894e1b2a4241be86991388625407d76\",\"name\":\"Adrian Bolboaca\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/blog.adrianbolboaca.ro\/wp-content\/uploads\/2019\/11\/Adi-300x400.jpg\",\"contentUrl\":\"https:\/\/blog.adrianbolboaca.ro\/wp-content\/uploads\/2019\/11\/Adi-300x400.jpg\",\"width\":300,\"height\":400,\"caption\":\"Adrian Bolboaca\"},\"logo\":{\"@id\":\"https:\/\/blog.adrianbolboaca.ro\/#\/schema\/person\/image\/\"},\"description\":\"Adrian was involved in developing software for domains like energy, ecommerce, banking, customs and ERP\/CRM. He has been working with companies from Netherlands, Romania, Italy, France and Germany, and he is knowledgeable in software technical domains like: clean code, unit testing, test driven development, simple design, emergent design, working effectively with legacy code. As a continuous learner and challenger of existing ideas and concepts, Adrian is a supporter of movements that give new ideas on how to continuously improve software and that embrace the values of software quality and efficiency. He facilitated many code retreats in Romania, Belgium, France, Germany, Netherlands, Finland, Bulgaria and has a keen interest in serious games and using gamestorming for continuous improvement. He is fluent in Romanian, English and French, but when it comes to programming languages he supports language agnosticism, since he strongly believes that a programming language is only a tool towards higher level software concepts. 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