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index.html
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<!DOCTYPE html>
<html lang="en"><head>
<script src="index_files/libs/clipboard/clipboard.min.js"></script>
<script src="index_files/libs/quarto-html/tabby.min.js"></script>
<script src="index_files/libs/quarto-html/popper.min.js"></script>
<script src="index_files/libs/quarto-html/tippy.umd.min.js"></script>
<link href="index_files/libs/quarto-html/tippy.css" rel="stylesheet">
<link href="index_files/libs/quarto-html/quarto-html.min.css" rel="stylesheet" data-mode="light">
<link href="index_files/libs/quarto-html/quarto-syntax-highlighting-dark.css" rel="stylesheet" id="quarto-text-highlighting-styles">
<script src="index_files/libs/quarto-contrib/videojs/video.min.js"></script>
<link href="index_files/libs/quarto-contrib/videojs/video-js.css" rel="stylesheet"><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta charset="utf-8">
<meta name="generator" content="quarto-1.2.219">
<meta name="author" content="David Granjon, Novartis">
<title>My Slide Show</title>
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui">
<link rel="stylesheet" href="index_files/libs/revealjs/dist/reset.css">
<link rel="stylesheet" href="index_files/libs/revealjs/dist/reveal.css">
<style>
code{white-space: pre-wrap;}
span.smallcaps{font-variant: small-caps;}
div.columns{display: flex; gap: min(4vw, 1.5em);}
div.column{flex: auto; overflow-x: auto;}
div.hanging-indent{margin-left: 1.5em; text-indent: -1.5em;}
ul.task-list{list-style: none;}
ul.task-list li input[type="checkbox"] {
width: 0.8em;
margin: 0 0.8em 0.2em -1.6em;
vertical-align: middle;
}
pre > code.sourceCode { white-space: pre; position: relative; }
pre > code.sourceCode > span { display: inline-block; line-height: 1.25; }
pre > code.sourceCode > span:empty { height: 1.2em; }
.sourceCode { overflow: visible; }
code.sourceCode > span { color: inherit; text-decoration: inherit; }
div.sourceCode { margin: 1em 0; }
pre.sourceCode { margin: 0; }
@media screen {
div.sourceCode { overflow: auto; }
}
@media print {
pre > code.sourceCode { white-space: pre-wrap; }
pre > code.sourceCode > span { text-indent: -5em; padding-left: 5em; }
}
pre.numberSource code
{ counter-reset: source-line 0; }
pre.numberSource code > span
{ position: relative; left: -4em; counter-increment: source-line; }
pre.numberSource code > span > a:first-child::before
{ content: counter(source-line);
position: relative; left: -1em; text-align: right; vertical-align: baseline;
border: none; display: inline-block;
-webkit-touch-callout: none; -webkit-user-select: none;
-khtml-user-select: none; -moz-user-select: none;
-ms-user-select: none; user-select: none;
padding: 0 4px; width: 4em;
}
pre.numberSource { margin-left: 3em; padding-left: 4px; }
div.sourceCode
{ color: #f8f8f2; background-color: #282a36; }
@media screen {
pre > code.sourceCode > span > a:first-child::before { text-decoration: underline; }
}
code span { color: #f8f8f2; } /* Normal */
code span.al { color: #ff5555; font-weight: bold; } /* Alert */
code span.an { color: #ff79c6; } /* Annotation */
code span.at { color: #ff79c6; } /* Attribute */
code span.bn { color: #bd93f9; } /* BaseN */
code span.bu { color: #8be9fd; } /* BuiltIn */
code span.cf { color: #ff79c6; } /* ControlFlow */
code span.ch { color: #f1fa8c; } /* Char */
code span.cn { color: #bd93f9; font-weight: bold; } /* Constant */
code span.co { color: #6272a4; } /* Comment */
code span.cv { color: #8be9fd; } /* CommentVar */
code span.do { color: #ffb86c; } /* Documentation */
code span.dt { color: #8be9fd; font-style: italic; } /* DataType */
code span.dv { color: #bd93f9; } /* DecVal */
code span.er { color: #ff5555; text-decoration: underline; } /* Error */
code span.ex { color: #8be9fd; } /* Extension */
code span.fl { color: #bd93f9; } /* Float */
code span.fu { color: #50fa7b; } /* Function */
code span.im { color: #ff79c6; } /* Import */
code span.in { color: #f1fa8c; } /* Information */
code span.kw { color: #ff79c6; } /* Keyword */
code span.op { color: #f8f8f2; } /* Operator */
code span.ot { color: #50fa7b; } /* Other */
code span.pp { color: #ff79c6; } /* Preprocessor */
code span.re { color: #8be9fd; } /* RegionMarker */
code span.sc { color: #ff79c6; } /* SpecialChar */
code span.ss { color: #f1fa8c; } /* SpecialString */
code span.st { color: #f1fa8c; } /* String */
code span.va { color: #8be9fd; } /* Variable */
code span.vs { color: #f1fa8c; } /* VerbatimString */
code span.wa { color: #ff5555; } /* Warning */
</style>
<link rel="stylesheet" href="index_files/libs/revealjs/dist/theme/quarto.css" id="theme">
<link rel="stylesheet" href="assets/styles/dracula-ui.css">
<link href="index_files/libs/revealjs/plugin/quarto-line-highlight/line-highlight.css" rel="stylesheet">
<link href="index_files/libs/revealjs/plugin/reveal-menu/menu.css" rel="stylesheet">
<link href="index_files/libs/revealjs/plugin/reveal-menu/quarto-menu.css" rel="stylesheet">
<link href="index_files/libs/revealjs/plugin/reveal-chalkboard/font-awesome/css/all.css" rel="stylesheet">
<link href="index_files/libs/revealjs/plugin/reveal-chalkboard/style.css" rel="stylesheet">
<link href="index_files/libs/revealjs/plugin/quarto-support/footer.css" rel="stylesheet">
<style type="text/css">
.callout {
margin-top: 1em;
margin-bottom: 1em;
border-radius: .25rem;
}
.callout.callout-style-simple {
padding: 0em 0.5em;
border-left: solid #acacac .3rem;
border-right: solid 1px silver;
border-top: solid 1px silver;
border-bottom: solid 1px silver;
display: flex;
}
.callout.callout-style-default {
border-left: solid #acacac .3rem;
border-right: solid 1px silver;
border-top: solid 1px silver;
border-bottom: solid 1px silver;
}
.callout .callout-body-container {
flex-grow: 1;
}
.callout.callout-style-simple .callout-body {
font-size: 1rem;
font-weight: 400;
}
.callout.callout-style-default .callout-body {
font-size: 0.9rem;
font-weight: 400;
}
.callout.callout-captioned.callout-style-simple .callout-body {
margin-top: 0.2em;
}
.callout:not(.callout-captioned) .callout-body {
display: flex;
}
.callout:not(.no-icon).callout-captioned.callout-style-simple .callout-content {
padding-left: 1.6em;
}
.callout.callout-captioned .callout-header {
padding-top: 0.2em;
margin-bottom: -0.2em;
}
.callout.callout-captioned .callout-caption p {
margin-top: 0.5em;
margin-bottom: 0.5em;
}
.callout.callout-captioned.callout-style-simple .callout-content p {
margin-top: 0;
}
.callout.callout-captioned.callout-style-default .callout-content p {
margin-top: 0.7em;
}
.callout.callout-style-simple div.callout-caption {
border-bottom: none;
font-size: .9rem;
font-weight: 600;
opacity: 75%;
}
.callout.callout-style-default div.callout-caption {
border-bottom: none;
font-weight: 600;
opacity: 85%;
font-size: 0.9rem;
padding-left: 0.5em;
padding-right: 0.5em;
}
.callout.callout-style-default div.callout-content {
padding-left: 0.5em;
padding-right: 0.5em;
}
.callout.callout-style-simple .callout-icon::before {
height: 1rem;
width: 1rem;
display: inline-block;
content: "";
background-repeat: no-repeat;
background-size: 1rem 1rem;
}
.callout.callout-style-default .callout-icon::before {
height: 0.9rem;
width: 0.9rem;
display: inline-block;
content: "";
background-repeat: no-repeat;
background-size: 0.9rem 0.9rem;
}
.callout-caption {
display: flex
}
.callout-icon::before {
margin-top: 1rem;
padding-right: .5rem;
}
.callout.no-icon::before {
display: none !important;
}
.callout.callout-captioned .callout-body > .callout-content > :last-child {
margin-bottom: 0.5rem;
}
.callout.callout-captioned .callout-icon::before {
margin-top: .5rem;
padding-right: .5rem;
}
.callout:not(.callout-captioned) .callout-icon::before {
margin-top: 1rem;
padding-right: .5rem;
}
/* Callout Types */
div.callout-note {
border-left-color: #4582ec !important;
}
div.callout-note .callout-icon::before {
background-image: url('data:image/png;base64,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');
}
div.callout-note.callout-style-default .callout-caption {
background-color: #dae6fb
}
div.callout-important {
border-left-color: #d9534f !important;
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<section id="title-slide" class="center"><script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/jquery.min.js"></script><script src="./assets/js/custom.js"></script><h1 class="title drac-heading drac-heading-xl drac-text-white">
An introduction to <span class="drac-badge drac-bg-purple-cyan drac-text-black">{shinyValidator}</span>
</h1>
<br><p class="subtitle">2022-11-14</p>
<p class="author">David Granjon, Novartis</p>
</section><section><section id="welcome" class="title-slide slide level1 vertical-center center"><h1>Welcome</h1>
</section><section id="hi-i-am-david-granjon" class="slide level2"><h2>Hi, I am David Granjon</h2>
<p>Senior Software developer at Novartis.</p>
<div class="cell">
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<p>We’re in for 2 hours of <strong>fun</strong>!</p>
<ul>
<li>Grab a ☕</li>
<li>Make yourself comfortable 🛋 or 🧘</li>
<li>Ask questions ❓</li>
</ul></section><section id="program" class="slide level2"><h2>Program</h2>
<ol type="1">
<li>Introduction <strong>10 min</strong>
</li>
<li>Setup {shinyValidator} <strong>20 min</strong>
</li>
<li>Discover {shinyValidator} <strong>30 min</strong>
</li>
<li>Customize {shinyValidator} <strong>40 min</strong>
</li>
<li>Add CI/CD (if time allows)</li>
<li>Q&A</li>
</ol></section><section id="workshop-material" class="slide level2"><h2>Workshop Material</h2>
<ul>
<li>Slides: <a href="https://rinpharma2022.rinterface.com">https://rinpharma2022.rinterface.com/</a>
</li>
</ul>
<p>Clone this repository with the RStudio IDE or via the command line.</p>
<div class="sourceCode" id="cb1"><pre class="sourceCode numberSource bash number-lines code-with-copy"><code class="sourceCode bash"><span id="cb1-1"><a href="#cb1-1"></a><span class="fu">git</span> clone https://github.com/RinteRface/rinpharma2022.git</span>
<span id="cb1-2"><a href="#cb1-2"></a><span class="bu">cd</span> rinpharma2022</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<p>Then run <code><a href="https://rstudio.github.io/renv/reference/restore.html">renv::restore()</a></code> to install the dependencies.</p>
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<span class="drac-text drac-text-green drac-line-height drac-text-left drac-text-bold drac-text-lg">During the workshop day, a live sandbox platform is accessible at rstd.io/class. The id will be given in the zoom chat.</span>
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</section><section id="pre-requisites" class="slide level2"><h2>Pre-requisites</h2>
<p>If you want to run <code>{shinyValidator}</code> locally (not on CI/CD), you must have:</p>
<ul>
<li><p><code>shinycannon</code> installed for the load-test part. See <a href="https://rstudio.github.io/shinyloadtest/articles/shinycannon.html">here</a>.</p></li>
<li><p>A chrome browser installed like <a href="https://www.chromium.org/getting-involved/download-chromium/">chromium</a>.</p></li>
<li><p><code>git</code> installed and a <a href="https://github.com/">GitHub</a> account.</p></li>
<li><p>A recent R version, if possible <code>R>= 4.1.0</code>.</p></li>
</ul>
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<span class="drac-text drac-text-red drac-line-height drac-text-left drac-text-bold drac-text-lg">This workshop is recorded. If it does not work for you, it is better to listen and stay on track. Fear not! You can retry later on your side with the recording. </span>
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</section></section><section><section id="introduction" class="title-slide slide level1 vertical-center center"><h1>Introduction</h1>
</section><section id="clothes-dont-make-the-man" class="slide level2"><h2>Clothes don’t make the man</h2>
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<p class="drac-text drac-text-white drac-line-height drac-text-left drac-text-normal drac-text-md drac-line-height-md">Your app may be as beautiful and as cool as you want, it is useless if it does not start/run.</p>
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</section><section id="from-prototype-to-production" class="slide level2"><h2>From prototype to production</h2>
<p>How do we transition❓</p>
<div class="columns">
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<span class="drac-text drac-text-purple drac-line-height drac-text-left drac-text-bold drac-text-md">Reliable</span>
: is the app doing what it is intended to do?
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<span class="drac-text drac-text-orange drac-line-height drac-text-left drac-text-bold drac-text-md">Stable</span>
: how often does it crash?
</p>
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</div><div class="column" style="width:33%;">
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<p class="drac-text drac-text-white drac-line-height drac-text-left drac-text-normal drac-text-md drac-line-height-md">
<span class="drac-text drac-text-green drac-line-height drac-text-left drac-text-bold drac-text-md">Available</span>
: is the app fast enough to handle multiple concurrent users?
</p>
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<p>In practice, a few apps meet all these requirements 😈.</p>
</section><section id="available-tools" class="slide level2"><h2>Available tools</h2>
<div class="panel-tabset">
<ul id="tabset-1" class="panel-tabset-tabby">
<li><a data-tabby-default="" href="#tabset-1-1">Structure your app</a></li>
<li><a href="#tabset-1-2"><strong>dependencies</strong></a></li>
<li><a href="#tabset-1-3"><strong>Test</strong> code</a></li>
<li><a href="#tabset-1-4">Optimize</a></li>
</ul>
<div class="tab-content">
<div id="tabset-1-1">
<p><img src="assets/images/svg/golem.svg" width="10%" style="display: block; margin: auto;" class="svg-img" alt="Hex logo of golem package."></p>
<ul>
<li>Easier checking, linting, documentation and testing.</li>
<li>Just … <strong>easier</strong>. 😀</li>
</ul>
</div>
<div id="tabset-1-2">
<p><img src="assets/images/svg/renv.svg" width="10%" style="display: block; margin: auto;" class="svg-img" alt="Hex logo of renv package."></p>
<ul>
<li>Fix package versions.</li>
<li>Increased <strong>reproducibility</strong>.</li>
</ul>
</div>
<div id="tabset-1-3">
<p><img src="assets/images/svg/testthat.svg" width="10%" style="display: block; margin: auto;" class="svg-img" alt="Hex logo of testthat package"></p>
<ul>
<li>Unit tests: test business logic.</li>
<li>Server testing: test how Shiny modules or pieces work together (with reactivity).</li>
<li>UI testing: test UI components, snapshots, headless-testing (<a href="https://rstudio.github.io/shinytest2/">shinytest2</a>).</li>
</ul>
</div>
<div id="tabset-1-4">
<p>Are there bottlenecks?</p>
<ul>
<li>
<strong>Load</strong> testing: How does the app behave with 10 simultaneous user? <a href="https://rstudio.github.io/shinyloadtest/">shinyloadtest</a>.</li>
<li>
<strong>Profiling</strong>: What part of my app is slow?<a href="https://rstudio.github.io/profvis/">profvis</a>.</li>
<li>Reactivity: Are there any reactivity issues? <img src="assets/images/svg/reactlog.svg" width="10%" style="display: inline; margin: auto;" class="svg-img">.</li>
</ul>
</div>
</div>
</div>
</section><section id="automate-cicd" class="slide level2"><h2>Automate: CI/CD</h2>
<div class="panel-tabset">
<ul id="tabset-2" class="panel-tabset-tabby">
<li><a data-tabby-default="" href="#tabset-2-1">What</a></li>
<li><a href="#tabset-2-2">Benefits</a></li>
<li><a href="#tabset-2-3">How?</a></li>
</ul>
<div class="tab-content">
<div id="tabset-2-1">
<ul>
<li>Continuous integration: automatically <strong>check</strong> new features. 🏥</li>
<li>Continuous deployment: automatically <strong>deploy</strong> content. ✉️</li>
<li>Running on a <strong>remote</strong> environment ☁️:
<ul>
<li>
<a href="https://github.com/features/actions">Github Actions</a>.</li>
<li>
<a href="https://www.jenkins.io/">Jenkins</a>.</li>
<li>
<a href="https://docs.gitlab.com/ee/ci/">Gitlab CI/CD</a>.</li>
</ul>
</li>
</ul>
</div>
<div id="tabset-2-2">
<ul>
<li>
<strong>Automated</strong>.</li>
<li>More <strong>reproducible</strong> (more os/R flavors available).</li>
<li>
<strong>Time saver</strong>.</li>
<li>Less duplication.</li>
</ul>
</div>
<div id="tabset-2-3">
<p>Not easy 😢</p>
<ul>
<li>Select <strong>DevOps</strong> platform (GitLab, GitHub, …).</li>
<li>Add <strong>version control</strong> (git knowledge).</li>
<li>Build custom GitLab runner (optional).</li>
<li>Write <strong>CI/CD instructions</strong> (better support for GitHub).</li>
</ul>
<p>Can’t we make things easier❓</p>
</div>
</div>
</div>
</section><section id="stop-i-am-lost" class="slide level2"><h2>Stop … I am lost …</h2>
<img src="assets/images/svg/sad.svg" width="40%" style="display: block; margin: auto;" class="svg-img r-stretch" alt="Sad background image."><ul>
<li>There are just so many tools! How to use them properly?</li>
<li>Is there a way to <strong>automate</strong> all of this? I just don’t have time … 😞</li>
</ul></section><section id="welcome-shinyvalidator" class="slide level2"><h2>Welcome {shinyValidator}</h2>
<ul>
<li>Integrate all previous mentioned tools.</li>
<li>Produces a single HTML report output.</li>
<li>Flexible.</li>
</ul></section></section><section><section id="setup-shinyvalidator" class="title-slide slide level1 vertical-center center"><h1>Setup {shinyValidator}</h1>
</section><section id="golem" class="slide level2" data-auto-animate="true"><h2 data-id="quarto-animate-title">{golem}</h2>
<p>We create an empty <a href="https://github.com/ThinkR-open/golem">golem</a> project<sup>1</sup>:</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb2"><pre class="sourceCode numberSource r number-lines code-with-copy" data-id="quarto-animate-code"><code class="sourceCode r hljs"><span id="cb2-1" class="hljs-ln-code"><a href="#cb2-1"></a>path <span class="ot"><-</span> <span class="fu">file.path</span>(<span class="st">"<FOLDER>"</span>, <span class="st">"<PKG>"</span>) </span>
<span id="cb2-2" class="hljs-ln-code"><a href="#cb2-2"></a>golem<span class="sc">::</span><span class="fu">create_golem</span>(path)</span>
<span id="cb2-3" class="hljs-ln-code"><a href="#cb2-3"></a><span class="co"># ...</span></span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
<aside><ol class="aside-footnotes"><li id="fn1"><p>You’ll replace <code><PKG></code> by whatever suitable.</p></li></ol></aside></section><section id="golem-1" class="slide level2" data-auto-animate="true"><h2 data-id="quarto-animate-title">{golem}</h2>
<p>We add some useful files, basic test and link to git:</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb3"><pre class="sourceCode numberSource r number-lines code-with-copy" data-id="quarto-animate-code"><code class="sourceCode r hljs"><span id="cb3-1" class="hljs-ln-code"><a href="#cb3-1"></a>path <span class="ot"><-</span> <span class="fu">file.path</span>(<span class="st">"<FOLDER>"</span>, <span class="st">"<PKG>"</span>) </span>
<span id="cb3-2" class="hljs-ln-code"><a href="#cb3-2"></a>golem<span class="sc">::</span><span class="fu">create_golem</span>(path)</span>
<span id="cb3-3" class="hljs-ln-code"><a href="#cb3-3"></a>usethis<span class="sc">::</span><span class="fu">use_mit_license</span>() <span class="co"># or whatever license</span></span>
<span id="cb3-4" class="hljs-ln-code"><a href="#cb3-4"></a>usethis<span class="sc">::</span><span class="fu">use_testthat</span>()</span>
<span id="cb3-5" class="hljs-ln-code"><a href="#cb3-5"></a>usethis<span class="sc">::</span><span class="fu">use_test</span>(<span class="st">"dummy"</span>)</span>
<span id="cb3-6" class="hljs-ln-code"><a href="#cb3-6"></a>usethis<span class="sc">::</span><span class="fu">use_git</span>()</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
</section><section id="put-some-real-server-code" class="slide level2"><h2>Put some real server code</h2>
<div class="columns">
<div class="column" style="width:50%;">
<p>Copy this into <code>app_server.R</code>:</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb4"><pre class="sourceCode numberSource r number-lines code-with-copy"><code class="sourceCode r"><span id="cb4-1"><a href="#cb4-1"></a>output<span class="sc">$</span>distPlot <span class="ot"><-</span> <span class="fu">renderPlot</span>({</span>
<span id="cb4-2"><a href="#cb4-2"></a> <span class="fu">hist</span>(<span class="fu">rnorm</span>(input<span class="sc">$</span>obs))</span>
<span id="cb4-3"><a href="#cb4-3"></a>})</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
</div><div class="column" style="width:50%;">
<p>Copy this into <code>app_ui.R</code>:</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb5"><pre class="sourceCode numberSource r number-lines code-with-copy"><code class="sourceCode r"><span id="cb5-1"><a href="#cb5-1"></a><span class="fu">fluidPage</span>(</span>
<span id="cb5-2"><a href="#cb5-2"></a> <span class="fu">sliderInput</span>(</span>
<span id="cb5-3"><a href="#cb5-3"></a> <span class="st">"obs"</span>,</span>
<span id="cb5-4"><a href="#cb5-4"></a> <span class="st">"Number of observations:"</span>,</span>
<span id="cb5-5"><a href="#cb5-5"></a> <span class="at">min =</span> <span class="dv">0</span>,</span>
<span id="cb5-6"><a href="#cb5-6"></a> <span class="at">max =</span> <span class="dv">1000</span>,</span>
<span id="cb5-7"><a href="#cb5-7"></a> <span class="at">value =</span> <span class="dv">500</span></span>
<span id="cb5-8"><a href="#cb5-8"></a> ),</span>
<span id="cb5-9"><a href="#cb5-9"></a> <span class="fu">plotOutput</span>(<span class="st">"distPlot"</span>)</span>
<span id="cb5-10"><a href="#cb5-10"></a>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
</div>
</div>
</section><section id="create-empty-github-repo" class="slide level2"><h2>Create empty GitHub repo</h2>
<p>Browse to <a href="https://github.com/">GitHub</a> and create an empty repository called <code><PKG></code> matching the previously created package.</p>
</section><section id="add-remote-repo-to-local" class="slide level2"><h2>Add remote repo to local</h2>
<img data-src="assets/images/png/init-github.png" alt="How to init a GitHub repository." class="r-stretch"><p>Go to terminal tab under RStudio:</p>
<div class="sourceCode" id="cb6"><pre class="sourceCode numberSource shell number-lines code-with-copy"><code class="sourceCode"><span id="cb6-1"><a href="#cb6-1"></a>git remote add origin <LINK COPIED FROM GITHUB></span>
<span id="cb6-2"><a href="#cb6-2"></a>git branch -M main</span>
<span id="cb6-3"><a href="#cb6-3"></a>git push -u origin main</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</section><section id="renv" class="slide level2" data-auto-animate="true"><h2 data-id="quarto-animate-title">{renv}</h2>
<p>Initialize <a href="https://rstudio.github.io/renv/">renv</a> for R package dependencies:</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb7"><pre class="sourceCode numberSource r number-lines code-with-copy" data-id="quarto-animate-code"><code class="sourceCode r hljs"><span id="cb7-1" class="hljs-ln-code"><a href="#cb7-1"></a><span class="fu">system</span>(<span class="st">"echo 'RENV_PATHS_LIBRARY_ROOT = ~/.renv/library' >> .Renviron"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
<div class="cell">
<div class="cell-output-display">
<div>
<div class="drac-box drac-card drac-bg-purple drac-p-md drac-m-md drac-rounded-full drac-h-auto drac-w-auto drac-scrollbar-purple drac-card-subtle drac-text-purple drac-border-red" variant="subtle">
<span class="drac-text drac-text-red drac-line-height drac-text-left drac-text-bold drac-text-lg">Restart R to consider .Renviron</span>
</div>
</div>
</div>
</div>
</section><section id="renv-1" class="slide level2" data-auto-animate="true"><h2 data-id="quarto-animate-title">{renv}</h2>
<div class="cell">
<div class="sourceCode cell-code" id="cb8" data-code-line-numbers="|4|6|8"><pre class="sourceCode numberSource r number-lines code-with-copy" data-id="quarto-animate-code"><code class="sourceCode r hljs"><span id="cb8-1" class="hljs-ln-code"><a href="#cb8-1"></a><span class="fu">system</span>(<span class="st">"echo 'RENV_PATHS_LIBRARY_ROOT = ~/.renv/library' >> .Renviron"</span>)</span>
<span id="cb8-2" class="hljs-ln-code"><a href="#cb8-2"></a></span>
<span id="cb8-3" class="hljs-ln-code"><a href="#cb8-3"></a><span class="co"># SCAN the project and look for dependencies</span></span>
<span id="cb8-4" class="hljs-ln-code"><a href="#cb8-4"></a>renv<span class="sc">::</span><span class="fu">init</span>()</span>
<span id="cb8-5" class="hljs-ln-code"><a href="#cb8-5"></a><span class="co"># install missing packages</span></span>
<span id="cb8-6" class="hljs-ln-code"><a href="#cb8-6"></a>renv<span class="sc">::</span><span class="fu">install</span>(<span class="st">"<PACKAGE>"</span>)</span>
<span id="cb8-7" class="hljs-ln-code"><a href="#cb8-7"></a><span class="co"># Capture new dependencies after package installation</span></span>
<span id="cb8-8" class="hljs-ln-code"><a href="#cb8-8"></a>renv<span class="sc">::</span><span class="fu">snapshot</span>()</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
<img data-src="assets/images/png/renv-init.png" alt="Code output showing successful renv setup." class="r-stretch"></section><section id="install-shinyvalidator" class="slide level2"><h2>Install {shinyValidator}</h2>
<div class="cell">
<div class="sourceCode cell-code" id="cb9" data-code-line-numbers="4"><pre class="sourceCode numberSource r number-lines code-with-copy"><code class="sourceCode r"><span id="cb9-1"><a href="#cb9-1"></a>devtools<span class="sc">::</span><span class="fu">install_github</span>(<span class="st">"Novartis/shinyValidator"</span>)</span>
<span id="cb9-2"><a href="#cb9-2"></a><span class="fu">library</span>(shinyValidator)</span>
<span id="cb9-3"><a href="#cb9-3"></a><span class="co"># At the root of your R package</span></span>
<span id="cb9-4"><a href="#cb9-4"></a><span class="fu">use_validator</span>(<span class="st">"github"</span>)</span>
<span id="cb9-5"><a href="#cb9-5"></a>devtools<span class="sc">::</span><span class="fu">document</span>() <span class="co"># update help</span></span>
<span id="cb9-6"><a href="#cb9-6"></a>renv<span class="sc">::</span><span class="fu">snapshot</span>()</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
<p>Review the file structure</p>
</section></section><section><section id="shinyvalidator-step-by-step" class="title-slide slide level1 center"><h1>{shinyValidator}: step by step</h1>
</section><section id="overall-concept" class="slide level2"><h2>Overall concept</h2>
<div class="cell" data-reveal="true">
<div class="cell-output-display">
<div>
<p>
</p>
<pre class="mermaid mermaid-js" data-tooltip-selector="#mermaid-tooltip-1">%%{init: {'theme':'dark'}}%%
flowchart TD
subgraph CICD
direction TB
subgraph DMC
direction LR
E[Lint] --> F[Quality]
F --> G[Performance]
end
subgraph POC
direction LR
H[Lint] --> I[Quality]
end
end
A(Shiny Project) --> B(DMC App)
A --> C(Poof of concept App POC)
B --> |strict| D[Expectations]
C --> |low| D
D --> CICD
CICD --> |create| J(Global HTML report)
J --> |deploy| K(Deployment server)
click A callback "Tooltip for a callback"
click B callback "DMC: data monitoring committee"
click D callback "Apps have different expectations"
click E callback "Lint code: check code formatting, style, ..."
click F callback "Run R CMD check + headless crash test (shinytest2)"
click G callback "Optional tests: profiling, load test, ..."
click J callback "HTML reports with multiple tabs"
click K callback "RStudio Connect, GitLab/GitHub pages, ..."
</pre>
<div id="mermaid-tooltip-1" class="mermaidTooltip">
</div>
</div>
</div>
</div>
</section><section id="audit-app" class="slide level2"><h2>Audit app</h2>
<p><code>audit_app()</code> is the main function <sup>1</sup>:</p>
<div class="columns">
<div class="column" style="width:50%;">
<div class="cell">
<div class="sourceCode cell-code" id="cb10"><pre class="sourceCode numberSource r number-lines code-with-copy"><code class="sourceCode r"><span id="cb10-1"><a href="#cb10-1"></a>audit_app <span class="ot"><-</span> <span class="cf">function</span>(</span>
<span id="cb10-2"><a href="#cb10-2"></a> <span class="at">headless_actions =</span> <span class="cn">NULL</span>,</span>
<span id="cb10-3"><a href="#cb10-3"></a> <span class="at">timeout =</span> <span class="cn">NULL</span>,</span>
<span id="cb10-4"><a href="#cb10-4"></a> <span class="at">scope =</span> <span class="fu">c</span>(<span class="st">"manual"</span>, <span class="st">"DMC"</span>, <span class="st">"POC"</span>),</span>
<span id="cb10-5"><a href="#cb10-5"></a> <span class="at">output_validation =</span> <span class="cn">FALSE</span>,</span>
<span id="cb10-6"><a href="#cb10-6"></a> <span class="at">coverage =</span> <span class="cn">TRUE</span>,</span>
<span id="cb10-7"><a href="#cb10-7"></a> <span class="at">load_testing =</span> <span class="cn">TRUE</span>,</span>
<span id="cb10-8"><a href="#cb10-8"></a> <span class="at">profile_code =</span> <span class="cn">TRUE</span>,</span>
<span id="cb10-9"><a href="#cb10-9"></a> <span class="at">check_reactivity =</span> <span class="cn">TRUE</span>,</span>
<span id="cb10-10"><a href="#cb10-10"></a> ...</span>
<span id="cb10-11"><a href="#cb10-11"></a>) {</span>
<span id="cb10-12"><a href="#cb10-12"></a> <span class="do">###</span></span>
<span id="cb10-13"><a href="#cb10-13"></a>}</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
</div><div class="column" style="width:50%;">
<ul>
<li>
<strong>headless actions</strong>: pass <a href="https://rstudio.github.io/shinytest2/">shinytest2</a> instructions.</li>
<li>
<strong>timeout</strong>: wait app to start.</li>
<li>
<strong>…</strong>: parameters to pass to <code>run_app()</code> such as database logins, …</li>
<li>
<strong>scope</strong>: predefined set of parameters (see examples).</li>
</ul>
</div>
</div>
<aside><ol class="aside-footnotes"><li id="fn2"><p>also works locally without CI/CD, assuming you have chrome/chromium and shinycannon installed</p></li></ol></aside></section><section id="audit-app-example" class="slide level2"><h2>Audit app: example</h2>
<div class="columns">
<div class="column" style="width:50%;">
<div class="cell">
<div class="sourceCode cell-code" id="cb11"><pre class="sourceCode numberSource r number-lines code-with-copy"><code class="sourceCode r"><span id="cb11-1"><a href="#cb11-1"></a><span class="fu">audit_app</span>(<span class="at">profile_code =</span> <span class="cn">FALSE</span>, ...) </span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
</div><div class="column" style="width:50%;">
<div class="cell" data-reveal="true">
<div class="cell-output-display">
<div>
<p>
</p>
<pre class="mermaid mermaid-js" data-tooltip-selector="#mermaid-tooltip-2">%%{init: {'theme':'dark'}}%%
graph TD
A(Check) --> B(Crashtest)
B --> C(Loadtest)
C --> D(Coverage)
D --> E(Reactivity)
click A callback "devtools::check"
click B callback "{shinytest2}"
click C callback "{shinyloadtest}"
click D callback "{covr}"
click E callback "{reactlog}"
</pre>
<div id="mermaid-tooltip-2" class="mermaidTooltip">
</div>
</div>
</div>
</div>
</div>
</div>
</section><section id="audit-app-using-scope-parameter" class="slide level2"><h2>Audit app: using scope parameter</h2>
<div class="columns">
<div class="column" style="width:50%;">
<div class="cell">
<div class="sourceCode cell-code" id="cb12"><pre class="sourceCode numberSource r number-lines code-with-copy"><code class="sourceCode r"><span id="cb12-1"><a href="#cb12-1"></a><span class="fu">audit_app</span>(<span class="at">scope =</span> <span class="st">"POC"</span>, ...)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
</div><div class="column" style="width:50%;">
<div class="cell" data-reveal="true">
<div class="cell-output-display">
<div>
<p>
</p>
<pre class="mermaid mermaid-js" data-tooltip-selector="#mermaid-tooltip-3">%%{init: {'theme':'dark'}}%%
graph LR
A(Check) --> B(Crashtest)
</pre>
<div id="mermaid-tooltip-3" class="mermaidTooltip">
</div>
</div>
</div>
</div>
</div>
</div>
</section><section id="audit-app-headless-manipulation-12" class="slide level2"><h2>Audit app: headless manipulation (1/2)</h2>
<div class="columns">
<div class="column" style="width:50%;">
<div class="cell">
<div class="sourceCode cell-code" id="cb13"><pre class="sourceCode numberSource r number-lines code-with-copy"><code class="sourceCode r"><span id="cb13-1"><a href="#cb13-1"></a><span class="co"># app refers to the headless app instance.</span></span>
<span id="cb13-2"><a href="#cb13-2"></a><span class="fu">audit_app</span>({</span>
<span id="cb13-3"><a href="#cb13-3"></a> app<span class="sc">$</span><span class="fu">set_inputs</span>(<span class="at">obs =</span> <span class="dv">30</span>)</span>
<span id="cb13-4"><a href="#cb13-4"></a> app<span class="sc">$</span><span class="fu">get_screenshot</span>(<span class="st">"plop.png"</span>)</span>
<span id="cb13-5"><a href="#cb13-5"></a> <span class="co"># ... pass any other commands from shinytest2 API</span></span>
<span id="cb13-6"><a href="#cb13-6"></a>})</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
</div><div class="column" style="width:50%;">
<p><img src="assets/images/svg/shinytest2.svg" width="20%" style="display: block; margin: auto;" class="svg-img" alt="shinytest2 hex logo."></p>
</div>
</div>
<p>This code is run during crash test, profiling and reactivity check.</p>
</section><section id="headless-manipulation-your-turn-22" class="slide level2"><h2>Headless manipulation: your turn 🎮 (2/2)</h2>
<div class="columns">
<div class="column xsmall" style="width:50%;">
<p>Run the following code step by step<sup>1</sup>:</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb14" data-code-line-numbers="|2|3|5|6|19"><pre class="sourceCode numberSource r number-lines code-with-copy"><code class="sourceCode r"><span id="cb14-1"><a href="#cb14-1"></a><span class="co"># Start the app </span></span>
<span id="cb14-2"><a href="#cb14-2"></a><span class="fu">library</span>(shinytest2)</span>
<span id="cb14-3"><a href="#cb14-3"></a>headless_app <span class="ot"><-</span> AppDriver<span class="sc">$</span><span class="fu">new</span>(<span class="st">"./app.R"</span>)</span>
<span id="cb14-4"><a href="#cb14-4"></a><span class="co"># View the app for debugging (does not work from Workbench!)</span></span>
<span id="cb14-5"><a href="#cb14-5"></a>headless_app<span class="sc">$</span><span class="fu">view</span>()</span>
<span id="cb14-6"><a href="#cb14-6"></a>headless_app<span class="sc">$</span><span class="fu">set_inputs</span>(<span class="at">obs =</span> <span class="dv">1</span>)</span>
<span id="cb14-7"><a href="#cb14-7"></a>headless_app<span class="sc">$</span><span class="fu">get_value</span>(<span class="at">input =</span> <span class="st">"obs"</span>)</span>
<span id="cb14-8"><a href="#cb14-8"></a><span class="co"># You can also run JS code!</span></span>
<span id="cb14-9"><a href="#cb14-9"></a>headless_app<span class="sc">$</span><span class="fu">run_js</span>(</span>
<span id="cb14-10"><a href="#cb14-10"></a> <span class="st">"$('#obs')</span></span>
<span id="cb14-11"><a href="#cb14-11"></a><span class="st"> .data('shiny-input-binding')</span></span>
<span id="cb14-12"><a href="#cb14-12"></a><span class="st"> .setValue(</span></span>
<span id="cb14-13"><a href="#cb14-13"></a><span class="st"> $('#obs'), </span></span>
<span id="cb14-14"><a href="#cb14-14"></a><span class="st"> 100</span></span>
<span id="cb14-15"><a href="#cb14-15"></a><span class="st"> );</span></span>
<span id="cb14-16"><a href="#cb14-16"></a><span class="st"> "</span></span>
<span id="cb14-17"><a href="#cb14-17"></a>)</span>
<span id="cb14-18"><a href="#cb14-18"></a><span class="co"># Now you can call any function</span></span>
<span id="cb14-19"><a href="#cb14-19"></a><span class="co"># Close the connection before leaving </span></span>
<span id="cb14-20"><a href="#cb14-20"></a>headless_app<span class="sc">$</span><span class="fu">stop</span>()</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
</div><div class="column" style="width:50%;">
<p><img data-src="assets/images/png/headless-test-debug.png" alt="Headless test debugging tools."></p>
</div>
</div>
<aside><ol class="aside-footnotes"><li id="fn3"><p>Notice the app blocks the main R process but you could run it in the background with <a href="https://callr.r-lib.org">callr</a>, what <code>{shinyValidator}</code> is doing.</p></li></ol></aside></section><section id="about-monkey-testing-12" class="slide level2"><h2>About monkey testing (1/2)</h2>
<p><code>run_crash_test()</code> runs a <code>gremlins.js</code> <a href="https://marmelab.com/gremlins.js/">test</a> if no headless action are passed:</p>
<center>
<video id="video_shortcode_videojs_video1" height="400px" class="video-js vjs-default-skin " controls="" preload="auto" data-setup="{}" title="Monkey testing for Shiny app"><source src="assets/video/monkey-test.mp4"></video>
</center>
</section><section id="about-monkey-testing-22" class="slide level2"><h2>About monkey testing (2/2)</h2>
<h3 id="your-turn">Your turn 👩🔬</h3>
<div class="columns">
<div class="column xsmall" style="width:50%;">
<ol type="1">
<li>Run <code>./app.R</code> in an external browser.</li>
<li>Open the developer tools (ctrl + shift (Maj) + I for Windows, option + command + I on Mac).</li>
<li>Browse to https://marmelab.com/gremlins.js/ and copy the Bookmarklet Code on the right.</li>
<li>Copy this code into the Shiny app HTML inspector JS console.</li>
<li>Enjoy that moment.</li>
</ol>
</div><div class="column" style="width:50%;">
<p><img data-src="assets/images/png/monkey-test.png" alt="Monkey test screnshot."></p>
</div>
</div>
</section><section id="report-example" class="slide level2"><h2>Report example</h2>
<iframe src="./assets/shinyvalidator-report/index.html" title="shinyValidator html report" width="100%" height="100%">
</iframe>
</section><section id="your-turn-1" class="slide level2"><h2>Your turn 🎮</h2>
<ol type="1">
<li>From the R console, call <code>shinyValidator::audit_app(scope = "POC")</code>.</li>
<li>Look at the logs messages.</li>
<li>When done open <code>public/index.html</code> (external browser).</li>
<li>Explore the report.</li>
<li>Modify app code and rerun …</li>
</ol></section><section id="pro-tip" class="slide level2"><h2>Pro tip</h2>
<p>Cleanup between each run!</p>
<div class="cell">
<div class="cell-output-display">
<div>
<div class="drac-box drac-card drac-bg-purple drac-p-md drac-m-md drac-rounded-full drac-h-auto drac-w-auto drac-scrollbar-purple drac-card-subtle drac-text-purple drac-border-red" variant="subtle">
<span class="drac-text drac-text-red drac-line-height drac-text-left drac-text-bold drac-text-lg">After each `shinyValidator::audit_app`,
remove the /public folder and restart the R session.</span>
</div>
</div>
</div>
</div>
</section></section><section><section id="improve" class="title-slide slide level1 vertical-center center"><h1>Improve</h1>
<p>Your turn 🎮</p>
</section><section id="disable-other-checks" class="slide level2"><h2>Disable other checks</h2>
<p>Modify <code>shinyValidator::audit_app</code> parameters:</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb15" data-code-line-numbers="2-5"><pre class="sourceCode numberSource r number-lines code-with-copy"><code class="sourceCode r"><span id="cb15-1"><a href="#cb15-1"></a>shinyValidator<span class="sc">::</span><span class="fu">audit_app</span>(</span>
<span id="cb15-2"><a href="#cb15-2"></a> <span class="at">load_testing =</span> <span class="cn">FALSE</span>, </span>
<span id="cb15-3"><a href="#cb15-3"></a> <span class="at">profile_code =</span> <span class="cn">FALSE</span>, </span>
<span id="cb15-4"><a href="#cb15-4"></a> <span class="at">check_reactivity =</span> <span class="cn">FALSE</span></span>
<span id="cb15-5"><a href="#cb15-5"></a>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
<div class="cell">
<div class="cell-output-display">
<div>
<div class="drac-box drac-card drac-bg-purple drac-p-md drac-m-md drac-rounded-full drac-h-auto drac-w-auto drac-scrollbar-purple drac-card-subtle drac-text-purple drac-border-red" variant="subtle">
<span class="drac-text drac-text-red drac-line-height drac-text-left drac-text-bold drac-text-lg">For learning purposes we disable load test, profiling, ... at the moment ...</span>
</div>
</div>
</div>
</div>
</section><section id="add-server-testing" class="slide level2" data-auto-animate="true"><h2 data-id="quarto-animate-title">Add server testing</h2>
<div class="cell">
<div class="cell-output-display">
<div>
<div class="drac-box drac-card drac-bg-purple drac-p-md drac-m-md drac-rounded-full drac-h-auto drac-w-auto drac-scrollbar-purple drac-card-subtle drac-text-purple drac-border-green" variant="subtle">
<span class="drac-text drac-text-green drac-line-height drac-text-left drac-text-bold drac-text-lg">Goal: test reactivity and how pieces work together ...</span>
</div>
</div>
</div>
</div>
<div class="cell">
<div class="sourceCode cell-code" id="cb16"><pre class="sourceCode numberSource r number-lines code-with-copy" data-id="quarto-animate-code"><code class="sourceCode r hljs"><span id="cb16-1" class="hljs-ln-code"><a href="#cb16-1"></a>usethis<span class="sc">::</span><span class="fu">use_test</span>(<span class="st">"app-server-test"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
</section><section id="add-server-testing-1" class="slide level2" data-auto-animate="true"><h2 data-id="quarto-animate-title">Add server testing</h2>
<div class="cell">
<div class="sourceCode cell-code" id="cb17" data-code-line-numbers="|3|4|6|7|8|9"><pre class="sourceCode numberSource r number-lines code-with-copy" data-id="quarto-animate-code"><code class="sourceCode r hljs"><span id="cb17-1" class="hljs-ln-code"><a href="#cb17-1"></a>usethis<span class="sc">::</span><span class="fu">use_test</span>(<span class="st">"app-server-test"</span>)</span>
<span id="cb17-2" class="hljs-ln-code"><a href="#cb17-2"></a><span class="co"># Inside app-server-test</span></span>
<span id="cb17-3" class="hljs-ln-code"><a href="#cb17-3"></a><span class="fu">testServer</span>(app_server, {</span>
<span id="cb17-4" class="hljs-ln-code"><a href="#cb17-4"></a> session<span class="sc">$</span><span class="fu">setInputs</span>(<span class="at">obs =</span> <span class="dv">0</span>)</span>
<span id="cb17-5" class="hljs-ln-code"><a href="#cb17-5"></a> <span class="co"># There should be an error</span></span>
<span id="cb17-6" class="hljs-ln-code"><a href="#cb17-6"></a> <span class="fu">expect_error</span>(output<span class="sc">$</span>distPlot)</span>
<span id="cb17-7" class="hljs-ln-code"><a href="#cb17-7"></a> session<span class="sc">$</span><span class="fu">setInputs</span>(<span class="at">obs =</span> <span class="dv">100</span>)</span>
<span id="cb17-8" class="hljs-ln-code"><a href="#cb17-8"></a> <span class="fu">str</span>(output<span class="sc">$</span>distPlot)</span>
<span id="cb17-9" class="hljs-ln-code"><a href="#cb17-9"></a>})</span>
<span id="cb17-10" class="hljs-ln-code"><a href="#cb17-10"></a><span class="co"># Test it</span></span>
<span id="cb17-11" class="hljs-ln-code"><a href="#cb17-11"></a>devtools<span class="sc">::</span><span class="fu">test</span>()</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
<div class="cell">
<div class="cell-output-display">
<div>
<div class="drac-box drac-card drac-bg-purple drac-p-md drac-m-md drac-rounded-full drac-h-auto drac-w-auto drac-scrollbar-purple drac-card-subtle drac-text-purple drac-border-red" variant="subtle">
<span class="drac-text drac-text-red drac-line-height drac-text-left drac-text-bold drac-text-lg">Server tests are run without the UI, inputs have to be changed manually with session.</span>
</div>
</div>
</div>
</div>
<p>Run <code>shinyValidator::audit_app</code> and have a look at the coverage tab.</p>
</section><section id="customize-crash-test" class="slide level2"><h2>Customize Crash test</h2>
<div class="cell">
<div class="cell-output-display">
<div>
<div class="drac-box drac-card drac-bg-purple drac-p-md drac-m-md drac-rounded-full drac-h-auto drac-w-auto drac-scrollbar-purple drac-card-subtle drac-text-purple drac-border-green" variant="subtle">
<span class="drac-text drac-text-green drac-line-height drac-text-left drac-text-bold drac-text-lg">Goal: UI feature testing. Is the app starting? Is the background dark? ...</span>
</div>
</div>
</div>
</div>
<p>Leverage <a href="https://rstudio.github.io/shinytest2/">shinytest2</a> power<sup>1</sup>, <code>app</code> being the Shiny app to audit.</p>
<div class="small">