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A presentation about Full Stack Integration testing with a focus on headless solutions and a list of promising new solutions using johnson. Presented at RailsWayCon 2010
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Full Stack Integration Testing
Patrick Hüsler, huesler informatik
Control the Browser
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Emulate a browser
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The Lay of The Land
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Thank you Martin Kleppmannhttp://www.slideshare.net/martinkleppmann/crossbrowser-testing-in-the-real-world
Headless
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HTML Unit
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<< HtmlUnit is a "GUI-Less browser for Java programs". It models HTML documents and provides an API that allows you to invoke pages, fill out forms, click links, etc... just like you do in your "normal" browser. >>http://htmlunit.sourceforge.net/
Celerity
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<< A ruby wrapper around HTML Unit written in JRuby>>
Concerns
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SLOW
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Really SLOW!!!
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Sometimes Brittle
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Focus on the most important features
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Rails
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Status Quo Ante
Webrat
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Selenium et. al
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Headless
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Culerity
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http://github.com/langalex/culerity
Steam
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http://github.com/svenfuchs/steam
Status Quo
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Capybara
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http://github.com/jnicklas/capybara
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<< Capybara aims to simplify the process of integration testing Rack applications, such as Rails, Sinatra or Merb. It is inspired by and aims to replace Webrat as a DSL for interacting with a webapplication. It is agnostic about the driver running your tests and currently comes bundled with rack-test, Culerity, Celerity and Selenium support built in.>>http://github.com/jnicklas/capybara
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• rack-test•Celerity•Selenium• (env-js)
Capybara Drivers
Ideas/Approaches
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Steam
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http://github.com/svenfuchs/steam
Steam is a headless integration testing tool driving HtmlUnit to enable testing JavaScript-driven web sites. In that it is similar to Culerity which drives Celerity (which also drives HtmlUnit).
envjs
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http://github.com/jeresig/env-js
http://www.envjs.com/
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ENVJS IS A SIMULATED BROWSER ENVIRONMENT WRITTEN IN JAVASCRIPT. IT WAS ORIGINALLY DEVELOPED BY JOHN RESIG AND DISCUSSED IN HIS BLOG HERE. ENVJS IS NOW SUPPORTED BY A COMMUNITY OF DEVELOPERS WHO ALL USE ENVJS AS PART OF THEIR OWN OPEN SOURCE PROJECTS.
http://www.envjs.com/
Johnson
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Johnson wraps JavaScript in a loving Ruby embrace. It embeds the Mozilla SpiderMonkey JavaScript runtime as a C extension.
http://github.com/jbarnette/johnson
Johnson
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require "johnson"
Johnson.evaluate("4 + 4") # => 8 Johnson.evaluate("4 + foo", :foo => 4) # => 8
Johnson Presentation 2008
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http://rubyconf2008.confreaks.com/how-i-learned-to-love-javascript.html
Harmony
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http://github.com/mynyml/harmony
page.execute_js("1+1") #=> 2page.execute_js("document.title") #=> "Foo"
Harmony
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•Wrapper around• Johnson• Envjs
HolyGrail: Rails plugin for Harmony
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http://github.com/mynyml/holygrail
The ruby tracer
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http://github.com/cowboyd/therubyracer
Embed the Google V8 Javascript Interpreter into Ruby
Lyndon
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Lyndon wraps JavaScript in a loving MacRuby embrace.
http://github.com/defunkt/lyndon
Headless Squirrel
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http://github.com/Fingertips/headless-squirrel
A JavaScript test runner to run tests from the comfort of your terminal.
rdom
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tweet from the author, sven fuchs:
“maybe you want to mention steam and/or rdom http://bit.ly/db4vxL, browser/env in ruby w/ nokogiri + johnson, not complete yet.”
Thank You
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• @phuesler
• http://github.com/phuesler
• http://www.huesler-informatik.ch/blog
Questions?
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Thank You
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• @phuesler
• http://github.com/phuesler
• http://www.huesler-informatik.ch/blog
