My presentations, using Reveal.js (mostly in Portuguese).
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 

418 lines
14 KiB

<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>"Unit" em "Unit Tests"</title>
<meta name="description" content="A framework for easily creating beautiful presentations using HTML">
<meta name="author" content="Hakim El Hattab">
<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="reveal.js/css/reveal.css">
<link rel="stylesheet" href="reveal.js/css/theme/black.css" id="theme">
<!-- Code syntax highlighting -->
<link rel="stylesheet" href="reveal.js/lib/css/zenburn.css">
<!-- Printing and PDF exports -->
<script>
var link = document.createElement( 'link' );
link.rel = 'stylesheet';
link.type = 'text/css';
link.href = window.location.search.match( /print-pdf/gi ) ? 'css/print/pdf.css' : 'css/print/paper.css';
document.getElementsByTagName( 'head' )[0].appendChild( link );
</script>
<!--[if lt IE 9]>
<script src="lib/js/html5shiv.js"></script>
<![endif]-->
<style type="text/css" media="screen">
.happy {
color: yellow;
}
.semi-opaque {
background-color: rgba(0, 0, 0, 0.7);
}
.reveal section img {
border: none;
}
.reveal ul.empty {
list-style: none outside;
}
</style>
</head>
<body>
<div class="reveal">
<div class="slides">
<section>
<section data-background="_images/tdd-kentbeck-book.jpg">
<h1 class="semi-opaque">"Unit" em "Unit Tests"</h1>
</section>
</section>
<section>
<section>
<img src="_images/AYV1X0yv.png" alt="Me" style="float:left;width:300px;" class="no-border">
<div>
<ul class="empty">
<li>Júlio Biason</li>
<li><img src="_images/logo-horizontal-claro.png" alt="CWI Software" class='no-border'>
<li>@juliobiason</li>
<li>julio.biason@gmail.com</li>
<li><a href="http://presentations.juliobiason.net">http://presentations.juliobiason.net</a></li>
</ul>
</div>
</section>
<section>
<img src="_images/start-a-fight.jpg" alt="Eu faço perguntas em reuniões que eu não sei nada e reunião explode; não é de propósito" class='stretch'/>
</section>
<section>
<img src="_images/filho-do-capeta.jpg" alt="... mas hoje eu vim botar os filho dos outro no go horse." class='stretch'/>
</section>
</section>
<section>
<section>
<img src="_images/tdd-where-it-went-wrong.png" alt="TDD: Where it went wrong" class="stretch"/>
<p>Ian Cooper: <a href="https://vimeo.com/68375232">"TDD, where did it all go wrong"</a></p>
</section>
<section>
<p>Apresentação de Ian Cooper ressoou muito com experiências
feitas com TDD puro e "testes de ponta-a-ponta".</p>
</section>
</section>
<section>
<section>
<p>Mas antes...</p>
</section>
<section>
<p>Quem já...</p>
<ul class="empty">
<li class="fragment">... falou de "testes de unidade"?</li>
<li class="fragment">... discutiu a "unidade" dos testes de unidade?</li>
</ul>
</section>
<section>
<img src="_images/faustao-arrow.png" alt="Errow" class="stretch"/>
</section>
<section>
<img src="_images/errou-rude.png" alt="Errou rude" class="stretch"/>
</section>
</section>
<section>
<section>
<h2>Exemplo</h2>
<pre><code class="python">
class Client:
def __init__(self, name):
self.name = name
</code></pre>
</section>
<section>
<h2>Exemplo</h2>
<p>Novo requisito: "somente aceitar nomes válidos, que tem 2
palavras ou mais."</p>
</section>
<section>
<h2>Exemplo</h2>
<p>SOLID principles:</p>
<ul>
<li><strong>SRP - Single Responsability Principle</strong></li>
<li>OCP - Open/closed principle</li>
<li>LSP - Liskov substitution principle (design by contract)</li>
<li>ISP - Interface Segreation Principle</li>
<li>DIP - Dependency Inversion Principle</li>
</ul>
</section>
<section>
<h2>Exemplo</h2>
<pre><code class="python">
def _multiple_names(name):
split_names = name.split(' ')
return len(split_names) > 1
def _validate_name(name):
if not _multiple_names(name):
raise Exception("Invalid name")
return name
class Client:
def __init__(self, name):
self.name = _validate_name(name)
</code></pre>
</section>
<section>
<h2>Exemplo</h2>
<pre><code class="python">
import pytest
def test_single_name():
assert not _multiple_names('Cher')
def test_multiple_name():
assert _multiple_names('Julio Biason')
</code></pre>
</section>
<section>
<h2>Exemplo</h2>
<pre><code class="python">
def test_valid_name():
_validate_name('Julio Biason')
def test_invalid_name():
with pytest.raises(Exception):
_validate_name('Cher')
</code></pre>
</section>
<section>
<h2>Exemplo</h2>
<pre><code class="python">
def test_client_error():
with pytest.raises(Exception):
Client(name='Cher')
def test_client():
Client(name='Julio Biason')
</code></pre>
</section>
<section>
<h2>Exemplo</h2>
<pre><code>
$ pytest client.py
==== test session starts ====
rootdir: /home/jbiason/unitt, inifile:
collected 6 items
client.py ......
==== 6 passed in 0.03 seconds ====
</code></pre>
</section>
<section>
<h2>Exemplo</h2>
<pre><code>
$ pytest --cov=client client.py
==== test session starts ====
plugins: cov-2.4.0
collected 6 items
client.py ......
---- coverage: platform linux, python 3.4.3-final-0 ----
Name Stmts Miss Cover
-------------------------------
client.py 25 0 100%
==== 6 passed in 0.11 seconds ====
</code></pre>
</section>
<section>
<h2>Exemplo</h2>
<p>"Não podemos perder a Cher, a Xuxa, a Madonna, a Björk e o String como clientes!"</p>
</section>
<section>
<h2>Exemplo</h2>
<pre><code class="python">
class Client:
def __init__(self, name):
self.name = name
</code></pre>
</section>
<section>
<h2>Exemplo</h2>
<pre><code>
==== FAILURES ====
____ test_client_error ____
def test_client_error():
with pytest.raises(Exception):
&gt; Client(name='Cher')
E Failed: DID NOT RAISE &lt;class 'Exception'>
client.py:37: Failed
==== 1 failed, 5 passed in 0.63 seconds ====
</code></pre>
</section>
<section>
<h2>Exemplo</h2>
<pre><code>
$ pytest client.py
==== test session starts ====
rootdir: /home/jbiason/unitt, inifile:
plugins: cov-2.4.0
collected 6 items
client.py ......
==== 6 passed in 0.03 seconds ====
</code></pre>
</section>
<section>
<h2>Exemplo</h2>
<pre><code>
$ pytest --cov=client client.py
==== test session starts ====
rootdir: /home/jbiason/unitt, inifile:
plugins: cov-2.4.0
collected 6 items
client.py ......
---- coverage: platform linux, python 3.4.3-final-0 ----
Name Stmts Miss Cover
-------------------------------
client.py 24 0 100%
==== 6 passed in 0.12 seconds ====
</code></pre>
</section>
<section>
<h2>Exemplo</h2>
<p>Encontre o erro.</p>
</section>
</section>
<section>
<section>
<h2>TDD</h2>
<p>Kent Beck:</p>
<ul>
<li>"Run in isolation", nothing more, nothing less.</li>
<li>"Avoid testing implementation details, test behaviours"</li>
</ul>
</section>
<section>
<h2>TDD</h2>
<p>Discussões como "qual a unidade a ser testada" é que geraram
coisas como BDD e ATDD (Acceptance Test-Driven Development).</p>
</section>
<section>
<h2>TDD</h2>
<p>Reddit: <a href="https://www.reddit.com/r/django/comments/5bearg/should_i_write_unit_tests_for_djangos_built_in/" target="_blank">Devo escrever testes para a validação interna do Django?</a></p>
<h1 class="fragment">SIM!</h1>
</section>
<section>
<h2>TDD</h2>
<p>Nossos testes End-to-End.</p>
<aside class="notes">
Explicação do que aconteceu com os testes do gerenciador de alertas.
</aside>
</section>
<section>
<h2>TDD</h2>
<img src="_images/tdd-lifecycle.png" alt="The TDD lifecycle" class="stretch">
</section>
<section>
<h2>TDD</h2>
<p>SOLID principles:</p>
<ul>
<li>SRP - Single Responsability Principle</li>
<li>OCP - Open/closed principle</li>
<li><strong>LSP - Liskov substitution principle (design by contract)</strong></li>
<li>ISP - Interface Segreation Principle</li>
<li>DIP - Dependency Inversion Principle</li>
</ul>
<p>Funciona para aplicações inteiras; veja VIM vs NeoVim.</p>
</section>
</section>
<section data-background='_images/thats-all-folks.jpg'>
<section>
<h1 class="fragment semi-opaque">Perguntas?</h1>
</section>
</section>
</div>
</div>
<script src="reveal.js/lib/js/head.min.js"></script>
<script src="reveal.js/js/reveal.js"></script>
<script>
// Full list of configuration options available at:
// https://github.com/hakimel/reveal.js#configuration
Reveal.initialize({
controls: true,
progress: true,
history: true,
center: true,
// showNotes: true,
transition: 'slide', // none/fade/slide/convex/concave/zoom
// Optional reveal.js plugins
dependencies: [
{ src: 'reveal.js/lib/js/classList.js', condition: function() { return !document.body.classList; } },
{ src: 'reveal.js/plugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'reveal.js/plugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'reveal.js/plugin/highlight/highlight.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } },
{ src: 'reveal.js/plugin/zoom-js/zoom.js', async: true },
{ src: 'reveal.js/plugin/notes/notes.js', async: true }
]
});
</script>
</body>
</html>