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<!DOCTYPE html><html lang="en-US"><head><title>Rails - Practica</title><meta property="og:title" content="Rails - Practica"><meta name="description" content="Practica"><meta property="og:description" content="Practica"><meta charset="UTF-8"><meta name="viewport" content="width=device-width,height=device-height,initial-scale=1.0"><meta name="apple-mobile-web-app-capable" content="yes"><meta http-equiv="X-UA-Compatible" content="ie=edge"><meta property="og:type" content="website"><meta name="twitter:card" content="summary"><style>@media 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width: 100%;
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}</style></head><body><div class="bespoke-marp-osc"><button data-bespoke-marp-osc="prev" tabindex="-1" title="Previous slide">Previous slide</button><span data-bespoke-marp-osc="page"></span><button data-bespoke-marp-osc="next" tabindex="-1" title="Next slide">Next slide</button><button data-bespoke-marp-osc="fullscreen" tabindex="-1" title="Toggle fullscreen (f)">Toggle fullscreen</button></div><article id="presentation"><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="1" data-marpit-scope-NGDUm4ZD="" data-theme="gaia" data-style="code, pre code { background: black}
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" style="--theme:gaia;
;">
<h1>Testing +</h1>
<h1>Buenas Prácticas</h1>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="2" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
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section.small-links a {
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" data-marpit-pagination="2" style="--paginate:true;--theme:gaia;
;">
<h1>Testing + Buenas Prácticas</h1>
<ul>
<li>Frameworks: RSpec vs Minitest</li>
<li>Fixtures</li>
<li>Debugging</li>
<li>Errores comunes con Rails</li>
<li>Gemas útiles para trabajar</li>
<li>Consultas</li>
<li>Cierre</li>
</ul>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="3" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
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margin-top: 0;
}
section.small-links a {
text-size: small;
}
" data-marpit-pagination="3" style="--paginate:true;--theme:gaia;
;">
<h1>Ciclo de Testing</h1>
<p><img src="./images/ciclo-de-testing-01.png" alt="" /></p>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="4" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
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section.center-image img {
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section.small-list ul, section.small-list li {
margin-top: 0;
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section.small-links a {
text-size: small;
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" data-marpit-pagination="4" style="--paginate:true;--theme:gaia;
;">
<h1>Ciclo de Testing</h1>
<p><img src="./images/ciclo-de-testing-02.png" alt="" /></p>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="5" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
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section.center-image img {
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section.small-links a {
text-size: small;
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" data-marpit-pagination="5" style="--paginate:true;--theme:gaia;
;">
<h1>Testing Frameworks</h1>
<p>Qué framework elegir?</p>
<ul>
<li>Test::Unit</li>
<li>Minitest</li>
<li>RSpec</li>
<li><a href="https://awesome-ruby.com/#-testing">otros...</a></li>
</ul>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="6" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
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margin: 0;
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margin-top: 0;
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section.small-links a {
text-size: small;
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" data-marpit-pagination="6" style="--paginate:true;--theme:gaia;
;">
<p>Testing Frameworks</p>
<p><img src="./images/dhh_testing_02.png" alt="" /></p>
<p><img class="emoji" draggable="false" alt="🔗" src="https://twemoji.maxcdn.com/2/svg/1f517.svg" data-marp-twemoji=""/> <a href="https://brandonhilkert.com/blog/7-reasons-why-im-sticking-with-minitest-and-fixtures-in-rails/">7 Reasons I'm sticking with minitest and fixtures in Rails</a></p>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="7" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
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" data-marpit-pagination="7" style="--paginate:true;--theme:gaia;
;">
<p>Testing Frameworks</p>
<p><img src="./images/dhh_testing_03.png" alt="" /></p>
<p><img class="emoji" draggable="false" alt="🔗" src="https://twemoji.maxcdn.com/2/svg/1f517.svg" data-marp-twemoji=""/> <a href="https://dhh.dk/2014/tdd-is-dead-long-live-testing.html">https://dhh.dk/2014/tdd-is-dead-long-live-testing.html</a></p>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="8" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
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" data-marpit-pagination="8" style="--paginate:true;--theme:gaia;
;">
<p>Testing Frameworks</p>
<p><img src="./images/flamewar.png" alt="" /></p>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="9" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
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margin-top: 0;
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text-size: small;
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" data-marpit-pagination="9" style="--paginate:true;--theme:gaia;
;">
<h1>RSpec</h1>
<ul>
<li>rspec-core</li>
<li>rspec-expectations</li>
<li>rspec-mocks</li>
</ul>
<p>Y si usamos Rails:</p>
<ul>
<li>rspec-rails</li>
</ul>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="10" data-paginate="true" data-class="center-image" data-theme="gaia" data-style="code, pre code { background: black}
h1 code, h2 code, h3 code {
background: #fff8e1;
color: black;
border: 1px solid black
}
section.center-image img {
display: block;
margin-left: auto;
margin-right: auto;
}
section.achicar pre {
margin: 0;
transform: scaleY(0.9);
}
section.small-list ul, section.small-list li {
margin-top: 0;
}
section.small-links a {
text-size: small;
}
" class="center-image" data-marpit-pagination="10" style="--paginate:true;--class:center-image;--theme:gaia;
;">
<h1>Cheatsheet</h1>
<p><img src="./images/rspec-slides.png" alt="height:400px" style="height:400px;" /></p>
<p><a href="http://kerryb.github.io/iprug-rspec-presentation/">http://kerryb.github.io/iprug-rspec-presentation/</a></p>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="11" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
h1 code, h2 code, h3 code {
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color: black;
border: 1px solid black
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display: block;
margin-left: auto;
margin-right: auto;
}
section.achicar pre {
margin: 0;
transform: scaleY(0.9);
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margin-top: 0;
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section.small-links a {
text-size: small;
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" data-marpit-pagination="11" style="--paginate:true;--theme:gaia;
;">
<h2>Aclaración</h2>
<p>El slide anterior usa una <em>sintaxis vieja</em></p>
<p>En lugar de:</p>
<pre><code class="language-ruby"><svg data-marp-fitting="svg" data-marp-fitting-code><foreignObject><span data-marp-fitting-svg-content><span data-marp-fitting-svg-content-wrap>(<span class="hljs-number">2</span> + <span class="hljs-number">2</span>).should == <span class="hljs-number">4</span>
</span></span></foreignObject></svg></code></pre>
<p>Se debe usar:</p>
<pre><code class="language-ruby"><svg data-marp-fitting="svg" data-marp-fitting-code><foreignObject><span data-marp-fitting-svg-content><span data-marp-fitting-svg-content-wrap>expect(<span class="hljs-number">2</span> + <span class="hljs-number">2</span>).to be == <span class="hljs-number">4</span>
</span></span></foreignObject></svg></code></pre>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="12" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
h1 code, h2 code, h3 code {
background: #fff8e1;
color: black;
border: 1px solid black
}
section.center-image img {
display: block;
margin-left: auto;
margin-right: auto;
}
section.achicar pre {
margin: 0;
transform: scaleY(0.9);
}
section.small-list ul, section.small-list li {
margin-top: 0;
}
section.small-links a {
text-size: small;
}
" data-marpit-pagination="12" style="--paginate:true;--theme:gaia;
;">
<h1>Ejemplo</h1>
<pre><code class="language-ruby"><svg data-marp-fitting="svg" data-marp-fitting-code><foreignObject><span data-marp-fitting-svg-content><span data-marp-fitting-svg-content-wrap>RSpec.describe <span class="hljs-string">'MyClass'</span> <span class="hljs-keyword">do</span>
context <span class="hljs-string">"when conditions"</span>
it <span class="hljs-string">"does something"</span> <span class="hljs-keyword">do</span>
obj = MyClass.new
expect(obj.some_method).to eq <span class="hljs-string">"Something"</span>
<span class="hljs-keyword">end</span>
<span class="hljs-keyword">end</span>
<span class="hljs-keyword">end</span>
</span></span></foreignObject></svg></code></pre>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="13" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
h1 code, h2 code, h3 code {
background: #fff8e1;
color: black;
border: 1px solid black
}
section.center-image img {
display: block;
margin-left: auto;
margin-right: auto;
}
section.achicar pre {
margin: 0;
transform: scaleY(0.9);
}
section.small-list ul, section.small-list li {
margin-top: 0;
}
section.small-links a {
text-size: small;
}
" data-marpit-pagination="13" style="--paginate:true;--theme:gaia;
;">
<h1>Expectations</h1>
<pre><code class="language-ruby"><svg data-marp-fitting="svg" data-marp-fitting-code><foreignObject><span data-marp-fitting-svg-content><span data-marp-fitting-svg-content-wrap>expect(<span class="hljs-number">2</span> + <span class="hljs-number">2</span>).to eq <span class="hljs-number">4</span>
expect(<span class="hljs-number">2</span> + <span class="hljs-number">2</span>).to_not eq <span class="hljs-number">5</span>
</span></span></foreignObject></svg></code></pre>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="14" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
h1 code, h2 code, h3 code {
background: #fff8e1;
color: black;
border: 1px solid black
}
section.center-image img {
display: block;
margin-left: auto;
margin-right: auto;
}
section.achicar pre {
margin: 0;
transform: scaleY(0.9);
}
section.small-list ul, section.small-list li {
margin-top: 0;
}
section.small-links a {
text-size: small;
}
" data-marpit-pagination="14" style="--paginate:true;--theme:gaia;
;">
<h1>Matchers <a href="https://github.com/rspec/rspec-expectations#built-in-matchers"><img class="emoji" draggable="false" alt="🔗" src="https://twemoji.maxcdn.com/2/svg/1f517.svg" data-marp-twemoji=""/></a></h1>
<pre><code class="language-ruby"><svg data-marp-fitting="svg" data-marp-fitting-code><foreignObject><span data-marp-fitting-svg-content><span data-marp-fitting-svg-content-wrap><span class="hljs-comment"># Igualdad</span>
expect(actual).to eq expected
<span class="hljs-comment"># Identidad</span>
expect(actual).to be expected
<span class="hljs-comment"># Comparación</span>
expect(actual).to be >== expected
expect(actual).to be_within(delta).of(expected)
<span class="hljs-comment"># Expresiones Regulares</span>
expect(actual).to match(<span class="hljs-regexp">/expression/</span>)
</span></span></foreignObject></svg></code></pre>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="15" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
h1 code, h2 code, h3 code {
background: #fff8e1;
color: black;
border: 1px solid black
}
section.center-image img {
display: block;
margin-left: auto;
margin-right: auto;
}
section.achicar pre {
margin: 0;
transform: scaleY(0.9);
}
section.small-list ul, section.small-list li {
margin-top: 0;
}
section.small-links a {
text-size: small;
}
" data-marpit-pagination="15" style="--paginate:true;--theme:gaia;
;">
<h1>Matchers <a href="https://github.com/rspec/rspec-expectations#built-in-matchers"><img class="emoji" draggable="false" alt="🔗" src="https://twemoji.maxcdn.com/2/svg/1f517.svg" data-marp-twemoji=""/></a></h1>
<pre><code class="language-ruby"><svg data-marp-fitting="svg" data-marp-fitting-code><foreignObject><span data-marp-fitting-svg-content><span data-marp-fitting-svg-content-wrap><span class="hljs-comment"># Errores / Excepciones</span>
expect { ... }.to raise_error
expect { ... }.to raise_error(ErrorClass)
expect { ... }.to raise_error(<span class="hljs-string">"message"</span>)
expect { ... }.to raise_error(ErrorClass, <span class="hljs-string">"message"</span>)
<span class="hljs-comment"># Verdad / Falsedad</span>
expect(actual).to be_truthy <span class="hljs-comment"># passes if actual is truthy (not nil or false)</span>
expect(actual).to be <span class="hljs-literal">true</span> <span class="hljs-comment"># passes if actual == true</span>
expect(actual).to be_nil <span class="hljs-comment"># passes if actual is nil</span>
expect(actual).to_not be_nil <span class="hljs-comment"># passes if actual is not nil</span>
<span class="hljs-comment"># Predicate matchers</span>
expect(actual).to be_xxx <span class="hljs-comment"># passes if actual.xxx?</span>
expect(actual).to have_xxx(<span class="hljs-symbol">:arg</span>) <span class="hljs-comment"># passes if actual.has_xxx?(:arg)</span>
</span></span></foreignObject></svg></code></pre>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="16" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
h1 code, h2 code, h3 code {
background: #fff8e1;
color: black;
border: 1px solid black
}
section.center-image img {
display: block;
margin-left: auto;
margin-right: auto;
}
section.achicar pre {
margin: 0;
transform: scaleY(0.9);
}
section.small-list ul, section.small-list li {
margin-top: 0;
}
section.small-links a {
text-size: small;
}
" data-marpit-pagination="16" style="--paginate:true;--theme:gaia;
;">
<h1>Red, Green, Refactor...</h1>
<ul>
<li>Bloques <code>before</code>/<code>after</code></li>
<li>Bloques <code>let</code>/<code>let!</code></li>
<li>Context</li>
</ul>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="17" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
h1 code, h2 code, h3 code {
background: #fff8e1;
color: black;
border: 1px solid black
}
section.center-image img {
display: block;
margin-left: auto;
margin-right: auto;
}
section.achicar pre {
margin: 0;
transform: scaleY(0.9);
}
section.small-list ul, section.small-list li {
margin-top: 0;
}
section.small-links a {
text-size: small;
}
" data-marpit-pagination="17" style="--paginate:true;--theme:gaia;
;">
<h1><code>before</code> block</h1>
<pre><code class="language-ruby"><svg data-marp-fitting="svg" data-marp-fitting-code><foreignObject><span data-marp-fitting-svg-content><span data-marp-fitting-svg-content-wrap>RSpec.describe <span class="hljs-string">'Hello world'</span> <span class="hljs-keyword">do</span>
before <span class="hljs-keyword">do</span>
@hw = HelloWorld.new
<span class="hljs-keyword">end</span>
it <span class="hljs-string">"has a default greeting"</span> <span class="hljs-keyword">do</span>
expect(@hw.say_hi).to eq <span class="hljs-string">"Hello World"</span>
<span class="hljs-keyword">end</span>
it <span class="hljs-string">"can receive a param"</span> <span class="hljs-keyword">do</span>
expect(@hw.say_hi <span class="hljs-string">"there!"</span>).to eq <span class="hljs-string">"Hello There!"</span>
<span class="hljs-keyword">end</span>
<span class="hljs-keyword">end</span>
</span></span></foreignObject></svg></code></pre>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="18" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
h1 code, h2 code, h3 code {
background: #fff8e1;
color: black;
border: 1px solid black
}
section.center-image img {
display: block;
margin-left: auto;
margin-right: auto;
}
section.achicar pre {
margin: 0;
transform: scaleY(0.9);
}
section.small-list ul, section.small-list li {
margin-top: 0;
}
section.small-links a {
text-size: small;
}
" data-marpit-pagination="18" style="--paginate:true;--theme:gaia;
;">
<h1><code>before</code> block</h1>
<ul>
<li>before(:each)</li>
<li>before(:all)</li>
<li>after(:each)</li>
<li>after(:all)</li>
</ul>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="19" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
h1 code, h2 code, h3 code {
background: #fff8e1;
color: black;
border: 1px solid black
}
section.center-image img {
display: block;
margin-left: auto;
margin-right: auto;
}
section.achicar pre {
margin: 0;
transform: scaleY(0.9);
}
section.small-list ul, section.small-list li {
margin-top: 0;
}
section.small-links a {
text-size: small;
}
" data-marpit-pagination="19" style="--paginate:true;--theme:gaia;
;">
<h1><code>let</code></h1>
<pre><code class="language-ruby"><svg data-marp-fitting="svg" data-marp-fitting-code><foreignObject><span data-marp-fitting-svg-content><span data-marp-fitting-svg-content-wrap>RSpec.describe <span class="hljs-string">'Hello world'</span> <span class="hljs-keyword">do</span>
let(<span class="hljs-symbol">:hw</span>) { HelloWorld.new }
it <span class="hljs-string">"has a default greeting"</span> <span class="hljs-keyword">do</span>
expect(hw.say_hi).to eq <span class="hljs-string">"Hello World"</span>
<span class="hljs-keyword">end</span>
it <span class="hljs-string">"can receive a param"</span> <span class="hljs-keyword">do</span>
expect(hw.say_hi <span class="hljs-string">"there!"</span>).to eq <span class="hljs-string">"Hello There!"</span>
<span class="hljs-keyword">end</span>
<span class="hljs-keyword">end</span>
</span></span></foreignObject></svg></code></pre>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="20" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
h1 code, h2 code, h3 code {
background: #fff8e1;
color: black;
border: 1px solid black
}
section.center-image img {
display: block;
margin-left: auto;
margin-right: auto;
}
section.achicar pre {
margin: 0;
transform: scaleY(0.9);
}
section.small-list ul, section.small-list li {
margin-top: 0;
}
section.small-links a {
text-size: small;
}
" data-marpit-pagination="20" style="--paginate:true;--theme:gaia;
;">
<h1><code>let</code> + <code>context</code></h1>
<pre><code class="language-ruby"><svg data-marp-fitting="svg" data-marp-fitting-code><foreignObject><span data-marp-fitting-svg-content><span data-marp-fitting-svg-content-wrap>RSpec.describe <span class="hljs-string">'Let inside Context'</span> <span class="hljs-keyword">do</span>
context <span class="hljs-string">"as a User"</span> <span class="hljs-keyword">do</span>
let (<span class="hljs-symbol">:user</span>) { User.new }
<span class="hljs-comment"># ...</span>
<span class="hljs-keyword">end</span>
context <span class="hljs-string">"as an Admin"</span> <span class="hljs-keyword">do</span>
let (<span class="hljs-symbol">:user</span>) { Admin.new }
<span class="hljs-comment"># ...</span>
<span class="hljs-keyword">end</span>
<span class="hljs-keyword">end</span>
</span></span></foreignObject></svg></code></pre>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="21" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
h1 code, h2 code, h3 code {
background: #fff8e1;
color: black;
border: 1px solid black
}
section.center-image img {
display: block;
margin-left: auto;
margin-right: auto;
}
section.achicar pre {
margin: 0;
transform: scaleY(0.9);
}
section.small-list ul, section.small-list li {
margin-top: 0;
}
section.small-links a {
text-size: small;
}
" data-marpit-pagination="21" style="--paginate:true;--theme:gaia;
;">
<h1><code>let</code></h1>
<ul>
<li>lazy evaluation</li>
<li>memoised on first use</li>
<li>reseted between examples</li>
</ul>
<h1><code>let!</code></h1>
<ul>
<li>siempre se inicializa</li>
</ul>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="22" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
h1 code, h2 code, h3 code {
background: #fff8e1;
color: black;
border: 1px solid black
}
section.center-image img {
display: block;
margin-left: auto;
margin-right: auto;
}
section.achicar pre {
margin: 0;
transform: scaleY(0.9);
}
section.small-list ul, section.small-list li {
margin-top: 0;
}
section.small-links a {
text-size: small;
}
" data-marpit-pagination="22" style="--paginate:true;--theme:gaia;
;">
<h1>Mock (double)</h1>
<pre><code class="language-ruby"><svg data-marp-fitting="svg" data-marp-fitting-code><foreignObject><span data-marp-fitting-svg-content><span data-marp-fitting-svg-content-wrap><span class="hljs-keyword">require</span> <span class="hljs-string">"rspec/mocks/standalone"</span>
obj = double(<span class="hljs-symbol">:book</span>) <span class="hljs-comment"># => #<Double "book"></span>
obj = double(<span class="hljs-symbol">:book</span>, <span class="hljs-symbol">pages:</span> <span class="hljs-number">250</span>)
obj.pages <span class="hljs-comment"># => 250</span>
<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">User</span></span>
<span class="hljs-keyword">attr_accessor</span> <span class="hljs-symbol">:username</span>
<span class="hljs-keyword">end</span>
<span class="hljs-comment"># `instance_double` valida contra objetos reales</span>
user = instance_double(<span class="hljs-string">"User"</span>, <span class="hljs-symbol">:admin</span>, <span class="hljs-symbol">username:</span> <span class="hljs-string">'admin'</span>) <span class="hljs-comment"># OK</span>
user = instance_double(<span class="hljs-string">"User"</span>, <span class="hljs-symbol">:admin</span>, <span class="hljs-symbol">email:</span> <span class="hljs-string">'admin@example.com'</span>) <span class="hljs-comment"># Error</span>
</span></span></foreignObject></svg></code></pre>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="23" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
h1 code, h2 code, h3 code {
background: #fff8e1;
color: black;
border: 1px solid black
}
section.center-image img {
display: block;
margin-left: auto;
margin-right: auto;
}
section.achicar pre {
margin: 0;
transform: scaleY(0.9);
}
section.small-list ul, section.small-list li {
margin-top: 0;
}
section.small-links a {
text-size: small;
}
" data-marpit-pagination="23" style="--paginate:true;--theme:gaia;
;">
<h1>Method Stubs</h1>
<pre><code class="language-ruby"><svg data-marp-fitting="svg" data-marp-fitting-code><foreignObject><span data-marp-fitting-svg-content><span data-marp-fitting-svg-content-wrap>allow(book).to receive(<span class="hljs-symbol">:title</span>) { <span class="hljs-string">"The RSpec Book"</span> }
allow(book).to receive(<span class="hljs-symbol">:title</span>).and_return(<span class="hljs-string">"The RSpec Book"</span>)
allow(book).to receive_messages(
<span class="hljs-symbol">title:</span> <span class="hljs-string">"The RSpec Book"</span>,
<span class="hljs-symbol">subtitle:</span> <span class="hljs-string">"Behaviour-Driven Development with RSpec, Cucumber, and Friends"</span>)
</span></span></foreignObject></svg></code></pre>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="24" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
h1 code, h2 code, h3 code {
background: #fff8e1;
color: black;
border: 1px solid black
}
section.center-image img {
display: block;
margin-left: auto;
margin-right: auto;
}
section.achicar pre {
margin: 0;
transform: scaleY(0.9);
}
section.small-list ul, section.small-list li {
margin-top: 0;
}
section.small-links a {
text-size: small;
}
" data-marpit-pagination="24" style="--paginate:true;--theme:gaia;
;">
<h1>Message Expectations</h1>
<p>Similares a un method stub, pero el test espera que el método sea llamado. (En caso contrario, falla)</p>
<pre><code class="language-ruby"><svg data-marp-fitting="svg" data-marp-fitting-code><foreignObject><span data-marp-fitting-svg-content><span data-marp-fitting-svg-content-wrap><span class="hljs-comment"># Stub</span>
person = double(<span class="hljs-string">"person"</span>)
allow(Person).to receive(<span class="hljs-symbol">:find</span>) { person }
<span class="hljs-comment"># Expectation</span>
person = double(<span class="hljs-string">"person"</span>)
expect(Person).to receive(<span class="hljs-symbol">:find</span>) { person }
</span></span></foreignObject></svg></code></pre>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="25" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
h1 code, h2 code, h3 code {
background: #fff8e1;
color: black;
border: 1px solid black
}
section.center-image img {
display: block;
margin-left: auto;
margin-right: auto;
}
section.achicar pre {
margin: 0;
transform: scaleY(0.9);
}
section.small-list ul, section.small-list li {
margin-top: 0;
}
section.small-links a {
text-size: small;
}
" data-marpit-pagination="25" style="--paginate:true;--theme:gaia;
;">
<h1>rspec-rails</h1>
<ul>
<li>Generators</li>
<li>Transactions</li>
<li>Directory Structure</li>
</ul>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="26" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
h1 code, h2 code, h3 code {
background: #fff8e1;
color: black;
border: 1px solid black
}
section.center-image img {
display: block;
margin-left: auto;
margin-right: auto;
}
section.achicar pre {
margin: 0;
transform: scaleY(0.9);
}
section.small-list ul, section.small-list li {
margin-top: 0;
}
section.small-links a {
text-size: small;
}
" data-marpit-pagination="26" style="--paginate:true;--theme:gaia;
;">
<h1>Tipos de specs</h1>
<ul>
<li>Model</li>
<li>Controller</li>
<li>Request</li>
<li>Feature</li>
<li>View</li>
<li>Helper</li>
<li>Mailer</li>
<li>Routing</li>
<li>Job</li>
<li>System</li>
</ul>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="27" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
h1 code, h2 code, h3 code {
background: #fff8e1;
color: black;
border: 1px solid black
}
section.center-image img {
display: block;
margin-left: auto;
margin-right: auto;
}
section.achicar pre {
margin: 0;
transform: scaleY(0.9);
}
section.small-list ul, section.small-list li {
margin-top: 0;
}
section.small-links a {
text-size: small;
}
" data-marpit-pagination="27" style="--paginate:true;--theme:gaia;
;">
<h1>Model spec</h1>
<pre><code class="language-ruby"><svg data-marp-fitting="svg" data-marp-fitting-code><foreignObject><span data-marp-fitting-svg-content><span data-marp-fitting-svg-content-wrap>RSpec.describe Post, <span class="hljs-symbol">:type</span> => <span class="hljs-symbol">:model</span> <span class="hljs-keyword">do</span>
<span class="hljs-comment"># ...</span>
<span class="hljs-keyword">end</span>
</span></span></foreignObject></svg></code></pre>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="28" data-paginate="true" data-theme="gaia" data-style="code, pre code { background: black}
h1 code, h2 code, h3 code {
background: #fff8e1;
color: black;
border: 1px solid black
}
section.center-image img {
display: block;
margin-left: auto;
margin-right: auto;
}
section.achicar pre {
margin: 0;
transform: scaleY(0.9);
}
section.small-list ul, section.small-list li {
margin-top: 0;
}
section.small-links a {
text-size: small;
}
" data-marpit-pagination="28" style="--paginate:true;--theme:gaia;
;">
<h1>Controller spec</h1>
<ul>
<li>render_template</li>
</ul>
<pre><code class="language-ruby"><svg data-marp-fitting="svg" data-marp-fitting-code><foreignObject><span data-marp-fitting-svg-content><span data-marp-fitting-svg-content-wrap>expect(response).to render_template(<span class="hljs-symbol">:new</span>) <span class="hljs-comment"># wraps assert_template</span>
</span></span></foreignObject></svg></code></pre>
<ul>