Understanding Capybara Setup

Let’s understand the Capybara Setup. Capybara requires Ruby 1.9.3 or later. However, it can be used in two modes

• Firstly, UI
• Subsequently, Headless

So, to install, add this line to your Gemfile and run bundle install:

gem ‘capybara’

In addition, if the application that you are testing is a Rails app, add this line to your test helper file:

require ‘capybara/rails’

Not to mention, in Rails 4.0/4.1 the default test environment (config/environments/test.rb) is not threadsafe. So, if you experience random errors about missing constants, add config.allow_concurrency = false to config/environments/test.rb.

However, if the application that you are testing is a Rack app, but not Rails, set Capybara.app to your Rack app:

Capybara.app = MyRackApp

If you need to test JavaScript, or if your app interacts with (or is located at) a remote URL, you’ll need to use a different driver.

In UI mode, add the following to the Gemfile:

gem install capybara

gem install #{web_driver_on_which_capybara_runs}

 

For Headless mode

gem install capybara

gem install #{web_driver_on_which_capybara_runs}

apt-get install firefox

apt-get install xvfb

gem install selenium-webdriver # if using selenium-webdriver

gem install capybara-webkit # if using capybara-webkit

apt-get install libqtwebkit-dev # if using capybara-webkit

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