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<!-- Generated by pkgdown: do not edit by hand --><html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Register expressions for export in test mode — exportTestValues • shiny</title><!-- jquery --><script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js" integrity="sha512-v2CJ7UaYy4JwqLDIrZUI/4hqeoQieOmAZNXBeQyjo21dadnwR+8ZaIJVT8EE2iyI61OV8e6M8PP2/4hpQINQ/g==" crossorigin="anonymous" referrerpolicy="no-referrer"></script><!-- Bootstrap --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/css/bootstrap.min.css" integrity="sha256-bZLfwXAP04zRMK2BjiO8iu9pf4FbLqX6zitd+tIvLhE=" crossorigin="anonymous"><script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/js/bootstrap.min.js" integrity="sha256-nuL8/2cJ5NDSSwnKD8VqreErSWHtnEP9E7AySL+1ev4=" crossorigin="anonymous"></script><!-- bootstrap-toc --><link rel="stylesheet" href="../bootstrap-toc.css"><script src="../bootstrap-toc.js"></script><!-- Font Awesome icons --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/all.min.css" integrity="sha256-mmgLkCYLUQbXn0B1SRqzHar6dCnv9oZFPEC1g1cwlkk=" crossorigin="anonymous"><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/v4-shims.min.css" integrity="sha256-wZjR52fzng1pJHwx4aV2AO3yyTOXrcDW7jBpJtTwVxw=" crossorigin="anonymous"><!-- clipboard.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script><!-- headroom.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/headroom.min.js" integrity="sha256-AsUX4SJE1+yuDu5+mAVzJbuYNPHj/WroHuZ8Ir/CkE0=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/jQuery.headroom.min.js" integrity="sha256-ZX/yNShbjqsohH1k95liqY9Gd8uOiE1S4vZc+9KQ1K4=" crossorigin="anonymous"></script><!-- pkgdown --><link href="../pkgdown.css" rel="stylesheet"><script src="../pkgdown.js"></script><meta property="og:title" content="Register expressions for export in test mode — exportTestValues"><meta property="og:description" content="This function registers expressions that will be evaluated when a test export
event occurs. These events are triggered by accessing a snapshot URL."><meta property="og:image" content="/logo.png"><!-- mathjax --><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js" integrity="sha256-nvJJv9wWKEm88qvoQl9ekL2J+k/RWIsaSScxxlsrv8k=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/config/TeX-AMS-MML_HTMLorMML.js" integrity="sha256-84DKXVJXs0/F8OTMzX4UR909+jtl4G7SPypPavF+GfA=" crossorigin="anonymous"></script><!--[if lt IE 9]>
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<h1>Register expressions for export in test mode</h1>
<small class="dont-index">Source: <a href="https://github.com/rstudio/shiny/blob/rc-v1.12.1/R/test-export.R" class="external-link"><code>R/test-export.R</code></a></small>
<div class="hidden name"><code>exportTestValues.Rd</code></div>
</div>
<div class="ref-description">
<p>This function registers expressions that will be evaluated when a test export
event occurs. These events are triggered by accessing a snapshot URL.</p>
</div>
<div id="ref-usage">
<div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">exportTestValues</span><span class="op">(</span></span>
<span> <span class="va">...</span>,</span>
<span> quoted_ <span class="op">=</span> <span class="cn">FALSE</span>,</span>
<span> env_ <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/sys.parent.html" class="external-link">parent.frame</a></span><span class="op">(</span><span class="op">)</span>,</span>
<span> session_ <span class="op">=</span> <span class="fu"><a href="domains.html">getDefaultReactiveDomain</a></span><span class="op">(</span><span class="op">)</span></span>
<span><span class="op">)</span></span></code></pre></div>
</div>
<div id="arguments">
<h2>Arguments</h2>
<dl><dt id="arg--">...<a class="anchor" aria-label="anchor" href="#arg--"></a></dt>
<dd><p>Named arguments that are quoted or unquoted expressions that will
be captured and evaluated when snapshot URL is visited.</p></dd>
<dt id="arg-quoted-">quoted_<a class="anchor" aria-label="anchor" href="#arg-quoted-"></a></dt>
<dd><p>Are the expression quoted? Default is <code>FALSE</code>.</p></dd>
<dt id="arg-env-">env_<a class="anchor" aria-label="anchor" href="#arg-env-"></a></dt>
<dd><p>The environment in which the expression should be evaluated.</p></dd>
<dt id="arg-session-">session_<a class="anchor" aria-label="anchor" href="#arg-session-"></a></dt>
<dd><p>A Shiny session object.</p></dd>
</dl></div>
<div id="details">
<h2>Details</h2>
<p>This function only has an effect if the app is launched in test mode. This is
done by calling <code><a href="runApp.html">runApp()</a></code> with <code>test.mode=TRUE</code>, or by setting the
global option <code>shiny.testmode</code> to <code>TRUE</code>.</p>
</div>
<div id="ref-examples">
<h2>Examples</h2>
<div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span><span class="co">## Only run this example in interactive R sessions</span></span></span>
<span class="r-in"><span><span class="kw">if</span> <span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/base/interactive.html" class="external-link">interactive</a></span><span class="op">(</span><span class="op">)</span><span class="op">)</span> <span class="op">{</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/base/options.html" class="external-link">options</a></span><span class="op">(</span>shiny.testmode <span class="op">=</span> <span class="cn">TRUE</span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># This application shows the test snapshot URL; clicking on it will</span></span></span>
<span class="r-in"><span><span class="co"># fetch the input, output, and exported values in JSON format.</span></span></span>
<span class="r-in"><span><span class="fu"><a href="shinyApp.html">shinyApp</a></span><span class="op">(</span></span></span>
<span class="r-in"><span> ui <span class="op">=</span> <span class="fu"><a href="bootstrapPage.html">basicPage</a></span><span class="op">(</span></span></span>
<span class="r-in"><span> <span class="fu"><a href="https://rstudio.github.io/htmltools/reference/builder.html" class="external-link">h4</a></span><span class="op">(</span><span class="st">"Snapshot URL: "</span><span class="op">)</span>,</span></span>
<span class="r-in"><span> <span class="fu"><a href="htmlOutput.html">uiOutput</a></span><span class="op">(</span><span class="st">"url"</span><span class="op">)</span>,</span></span>
<span class="r-in"><span> <span class="fu"><a href="https://rstudio.github.io/htmltools/reference/builder.html" class="external-link">h4</a></span><span class="op">(</span><span class="st">"Current values:"</span><span class="op">)</span>,</span></span>
<span class="r-in"><span> <span class="fu"><a href="textOutput.html">verbatimTextOutput</a></span><span class="op">(</span><span class="st">"values"</span><span class="op">)</span>,</span></span>
<span class="r-in"><span> <span class="fu"><a href="actionButton.html">actionButton</a></span><span class="op">(</span><span class="st">"inc"</span>, <span class="st">"Increment x"</span><span class="op">)</span></span></span>
<span class="r-in"><span> <span class="op">)</span>,</span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span> server <span class="op">=</span> <span class="kw">function</span><span class="op">(</span><span class="va">input</span>, <span class="va">output</span>, <span class="va">session</span><span class="op">)</span> <span class="op">{</span></span></span>
<span class="r-in"><span> <span class="va">vals</span> <span class="op">&lt;-</span> <span class="fu"><a href="reactiveValues.html">reactiveValues</a></span><span class="op">(</span>x <span class="op">=</span> <span class="fl">1</span><span class="op">)</span></span></span>
<span class="r-in"><span> <span class="va">y</span> <span class="op">&lt;-</span> <span class="fu"><a href="reactive.html">reactive</a></span><span class="op">(</span><span class="op">{</span> <span class="va">vals</span><span class="op">$</span><span class="va">x</span> <span class="op">+</span> <span class="fl">1</span> <span class="op">}</span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span> <span class="fu"><a href="observeEvent.html">observeEvent</a></span><span class="op">(</span><span class="va">input</span><span class="op">$</span><span class="va">inc</span>, <span class="op">{</span></span></span>
<span class="r-in"><span> <span class="va">vals</span><span class="op">$</span><span class="va">x</span> <span class="op">&lt;&lt;-</span> <span class="va">vals</span><span class="op">$</span><span class="va">x</span> <span class="op">+</span> <span class="fl">1</span></span></span>
<span class="r-in"><span> <span class="op">}</span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span> <span class="fu">exportTestValues</span><span class="op">(</span></span></span>
<span class="r-in"><span> x <span class="op">=</span> <span class="va">vals</span><span class="op">$</span><span class="va">x</span>,</span></span>
<span class="r-in"><span> y <span class="op">=</span> <span class="fu">y</span><span class="op">(</span><span class="op">)</span></span></span>
<span class="r-in"><span> <span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span> <span class="va">output</span><span class="op">$</span><span class="va">url</span> <span class="op">&lt;-</span> <span class="fu"><a href="renderUI.html">renderUI</a></span><span class="op">(</span><span class="op">{</span></span></span>
<span class="r-in"><span> <span class="va">url</span> <span class="op">&lt;-</span> <span class="va">session</span><span class="op">$</span><span class="fu">getTestSnapshotUrl</span><span class="op">(</span>format<span class="op">=</span><span class="st">"json"</span><span class="op">)</span></span></span>
<span class="r-in"><span> <span class="fu"><a href="https://rstudio.github.io/htmltools/reference/builder.html" class="external-link">a</a></span><span class="op">(</span>href <span class="op">=</span> <span class="va">url</span>, <span class="va">url</span><span class="op">)</span></span></span>
<span class="r-in"><span> <span class="op">}</span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span> <span class="va">output</span><span class="op">$</span><span class="va">values</span> <span class="op">&lt;-</span> <span class="fu"><a href="renderPrint.html">renderText</a></span><span class="op">(</span><span class="op">{</span></span></span>
<span class="r-in"><span> <span class="fu"><a href="https://rdrr.io/r/base/paste.html" class="external-link">paste0</a></span><span class="op">(</span><span class="st">"vals$x: "</span>, <span class="va">vals</span><span class="op">$</span><span class="va">x</span>, <span class="st">"\ny: "</span>, <span class="fu">y</span><span class="op">(</span><span class="op">)</span><span class="op">)</span></span></span>
<span class="r-in"><span> <span class="op">}</span><span class="op">)</span></span></span>
<span class="r-in"><span> <span class="op">}</span></span></span>
<span class="r-in"><span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="op">}</span></span></span>
</code></pre></div>
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