{"id":182864,"date":"2024-03-20T07:12:00","date_gmt":"2024-03-20T06:12:00","guid":{"rendered":"https:\/\/datascientest.com\/en\/?p=182864"},"modified":"2024-03-12T20:47:18","modified_gmt":"2024-03-12T19:47:18","slug":"test-driven-development-or-the-test-first-policy","status":"publish","type":"post","link":"https:\/\/datascientest.com\/en\/test-driven-development-or-the-test-first-policy","title":{"rendered":"Test Driven Development&#8221; or the &#8220;Test First&#8221; policy"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"182864\" class=\"elementor elementor-182864\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-92d0e75 e-flex e-con-boxed e-con\" data-id=\"92d0e75\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2ec436b elementor-widget elementor-widget-heading\" data-id=\"2ec436b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><h2 class=\"elementor-heading-title elementor-size-default\">Software development is based on several stages characterized by the PDCA or Plan - Do - Check - Act principle. One of the most important steps on the Deming wheel is the verification (or testing) phase. To this end, there are a number of different methods for checking software quality and reliability. Test Driven Development is one of them. So what is Test Driven Development? What are the advantages and disadvantages of this method? And above all, how can it be implemented? DataScientest answers all your questions.<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b052832 e-flex e-con-boxed e-con\" data-id=\"b052832\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5c65149 elementor-widget elementor-widget-heading\" data-id=\"5c65149\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">What is Test Driven Development?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b887691 elementor-widget elementor-widget-heading\" data-id=\"b887691\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">TDD definition<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2f20959 elementor-widget elementor-widget-text-editor\" data-id=\"2f20959\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p><strong>Test Driven Development<\/strong> is a software development methodology based on a test-first policy. The idea is to guide software or application programming through a series of tests.<\/p><p>And this, even before starting to <a href=\"https:\/\/datascientest.com\/en\/all-about-back-end\">write the code.<\/a><\/p><p>In this way, as soon as bugs are encountered, developers correct them as they go along.<\/p><p>Regular testing means that any anomalies detected in the source code can be eliminated rapidly (almost in real time). In this respect, <strong>TDD<\/strong> perfectly meets the requirements of the <a href=\"https:\/\/datascientest.com\/en\/agile-coach-roles-skills-training-career-opportunities\">Agile method<\/a>, since it implies moving forward by iteration to improve the software progressively.<\/p><p><strong>Good to know:<\/strong> This approach was initiated by the American developer Kent Beck. He simply reversed the process, starting by writing the test before writing the code. This allows him to improve code quality.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3ca10b5 elementor-widget elementor-widget-heading\" data-id=\"3ca10b5\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">TDD and other test procedures<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cea393b elementor-widget elementor-widget-text-editor\" data-id=\"cea393b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>While<strong> Test Driven Development<\/strong> is a well-known DevOps method, it is far from being the only method for verifying software quality:<\/p><ul><li><strong>Acceptance Test Driven Development (or ATDD)<\/strong>: a complementary method to TDD. In this case, developers focus on verifying the coherence of an application scenario with the targeted objectives. This approach focuses on functional application testing.<\/li><li><strong>Behavior driven development (BDD):<\/strong> also known as behavior-driven programming, BDD focuses on the desired behavior, not on the correctness of the code.<\/li><li><strong>Domain Driven Design (DDD):<\/strong> above all, this involves defining a common vision and language for all stakeholders.<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-aab85cb elementor-widget elementor-widget-text-editor\" data-id=\"aab85cb\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>All these methods complement each other. Together, they enable us to design better quality, scalable and reliable software, while reducing technical debt.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-58e7c47 elementor-widget elementor-widget-image\" data-id=\"58e7c47\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img[src$=\".svg\"]{width:48px}.elementor-widget-image img{vertical-align:middle;display:inline-block}<\/style>\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/11\/Test_Driven_Development_TDD.jpg\" title=\"\" alt=\"\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\"><\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-78dca11 elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"78dca11\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"https:\/\/datascientest.com\/en\/course-devops\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Learn more about TDD<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-39ed38c e-flex e-con-boxed e-con\" data-id=\"39ed38c\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ef38b8f elementor-widget elementor-widget-heading\" data-id=\"ef38b8f\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">What are the advantages and disadvantages of TDD?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c887c1a elementor-widget elementor-widget-heading\" data-id=\"c887c1a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Benefits<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-afcd711 elementor-widget elementor-widget-text-editor\" data-id=\"afcd711\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Today, <strong>Test Driven Development<\/strong> is recommended for the majority of programming processes. And for good reason: this testing method offers a multitude of benefits:<\/p><ul><li><strong>Anticipate software feasibility:<\/strong> by writing tests even before writing code, developers ensure that the very design of the software will enable them to achieve their objectives. Indeed, tests are more closely aligned with business needs. Above all, DevOps is able to cover more unit tests.<\/li><li><strong>Save time:<\/strong> by writing tests upstream, you also avoid wasting time developing features that don&#8217;t meet your objectives.<\/li><li><strong>Minimize errors:<\/strong> as development is test-driven, developers can detect bugs almost in real time. This limits post-deployment errors.<\/li><li><strong>Simplify maintenance:<\/strong> as a corollary to the previous point, reducing bugs also saves time in terms of maintenance and over-servicing.<\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-afd2a99 elementor-widget elementor-widget-heading\" data-id=\"afd2a99\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Disadvantages<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f43b15e elementor-widget elementor-widget-text-editor\" data-id=\"f43b15e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Despite all the advantages of<strong> Test Driven Development,<\/strong> we also need to be aware of its limitations.<\/p><p>On the one hand, this verification procedure implies an exhaustive understanding of the code. This implies a<strong> longer training period before starting to write the code.<\/strong><\/p><p>On the other hand, the aim of test-driven deployment is primarily to verify the correctness of the code. This methodology does not focus on controlling the use of the software and its functionalities. This is why <strong>TDD generally needs to be complemented by other test procedures (such as BDT).<\/strong><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a043e6d e-flex e-con-boxed e-con\" data-id=\"a043e6d\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b2d83bf elementor-widget elementor-widget-heading\" data-id=\"b2d83bf\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">What are the 3 phases of test-driven development?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f8c73f6 elementor-widget elementor-widget-text-editor\" data-id=\"f8c73f6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Test Driven Development is based on 3 fundamental laws:<\/p><ul><li><em>&#8220;You must write a test that fails before you can write the corresponding production code&#8221;<\/em><\/li><li><em>&#8220;You must write only one assertion at a time, which causes the test to fail or fail to compile&#8221;.<\/em><\/li><li><em>&#8220;You must write the minimum amount of production code so that the assertion of the failing test is satisfied&#8221;.<\/em><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0428589 elementor-widget elementor-widget-text-editor\" data-id=\"0428589\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Placed end-to-end in a single iteration, these 3 laws constitute a TDD nano-cycle. Traditionally, they are represented by a 3-phase cycle: red, green and refactor.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4cb97b6 elementor-widget elementor-widget-image\" data-id=\"4cb97b6\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/11\/3_phases_tdd.png\" title=\"\" alt=\"\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\"><\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2d955ac elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"2d955ac\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"https:\/\/datascientest.com\/en\/course-devops\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Mastering the TDD phases<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6f1f481 elementor-widget elementor-widget-heading\" data-id=\"6f1f481\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Phase Red<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3273bce elementor-widget elementor-widget-text-editor\" data-id=\"3273bce\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>The first step in<strong> Test Driven Development<\/strong> is for the developer to describe a problem by writing a <a href=\"https:\/\/datascientest.com\/en\/the-unit-test-in-data-analysis\">unit test<\/a>. But since the code doesn&#8217;t yet exist, the test is bound to fail when executed. Hence the red symbol.<\/p><p>To carry out this test, the developer puts himself in the end-user&#8217;s shoes by describing the missing components essential to the <strong>code&#8217;s operation<\/strong>. But these are components that have not yet been implemented.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7d3bea4 elementor-widget elementor-widget-heading\" data-id=\"7d3bea4\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Phase Green<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9472b5b elementor-widget elementor-widget-text-editor\" data-id=\"9472b5b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>The aim of this phase is to pass the test. To achieve this, the developer writes a <strong>piece of code<\/strong>, completing the unit test written beforehand. It must pass. This is a research phase, in which the developer must find a solution to the problem posed.<\/p><p><strong>But beware:<\/strong> during this phase of<strong> Test Driven Development<\/strong>, DevOps must not look for complex solutions. He must focus on the essentials, so that the production code turns green. He then verifies the code&#8217;s success by running further tests.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b61294b elementor-widget elementor-widget-heading\" data-id=\"b61294b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Phase refactor<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7a32dcb elementor-widget elementor-widget-text-editor\" data-id=\"7a32dcb\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Only once the <strong>solution has been found can the developer move on to the refactoring stage<\/strong>. He can then refactor the code, structure it, make it more readable and, if necessary, add to it.<\/p><p>However, he must not modify the code&#8217;s behavior. In other words, every feature must be retained. Here again, he must check that each test is validated each time a new feature is added.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8ef5cdc e-flex e-con-boxed e-con\" data-id=\"8ef5cdc\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-53fbafa elementor-widget elementor-widget-heading\" data-id=\"53fbafa\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Master TDD with DataScientest<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ca93485 elementor-widget elementor-widget-text-editor\" data-id=\"ca93485\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>The<strong> Test Driven Development<\/strong> approach fits in perfectly with the<a href=\"https:\/\/datascientest.com\/en\/all-about-ci-cd\"> CI\/CD (continuous integration and deployment)<\/a> working method typical of <a href=\"https:\/\/datascientest.com\/en\/azure-devops-vs-github-actions-which-is-the-best-ci-cd-tool\">DevOps.<\/a> As a future developer, you need to master this approach in order to optimize code at every stage of development. To integrate it properly, it&#8217;s best to be trained in it. That&#8217;s why DataScientest offers you a training course that combines practical lessons with the best methodologies. 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You must write the minimum amount of production code to satisfy the assertion of the failed test. Put together in a single iteration, these 3 laws constitute a TDD nano-cycle. Traditionally, they are represented by a 3-phase cycle: red, green and refactor.\"\n    }\n  },{\n    \"@type\": \"Question\",\n    \"name\": \"What are the advantages of TDD?\",\n    \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"Today, Test Driven Development is recommended for the majority of programming processes. And for good reason: this verification method offers a multitude of benefits: \n\"Anticipate software feasibility: by writing tests even before writing code, developers ensure that the very design of the software will enable them to achieve their objectives. In fact, tests are more closely aligned with business needs. And above all, DevOps is able to cover more unit tests.\" \n\"Save time: this upstream test writing work also avoids wasting time developing features that don't meet the targeted objectives.\" \n\"Minimize errors: as development is test-driven, developers can detect bugs almost in real time. This limits post-deployment errors.\" \n\"Simplify maintenance: a corollary of the previous point, reducing bugs also saves time in terms of maintenance and over-intendence.\"\n    }\n  },{\n    \"@type\": \"Question\",\n    \"name\": \"What are the disadvantages of TDD?\",\n    \"acceptedAnswer\": {\n      \"@type\": \"Answer\",\n      \"text\": \"Despite all the advantages of Test Driven Development, we also need to be aware of its limitations. On the one hand, this verification procedure implies an exhaustive understanding of the code. This implies a longer training period before starting to write the code. 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