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require "capybara/dsl"
require "action_controller"
require "action_dispatch/system_testing/driver"
require "action_dispatch/system_testing/server"
require "action_dispatch/system_testing/browser"
require "action_dispatch/system_testing/test_helpers/screenshot_helper"
require "action_dispatch/system_testing/test_helpers/setup_and_teardown"
module ActionDispatch
class SystemTestCase < IntegrationTest
# = System Testing
#
# System tests let you test real application in the browser. Because system
# tests use a real browser experience you can test all of your JavaScript
# easily from your test suite.
#
# To create a system test in your application, extend your test class
# from <tt>ApplicationSystemTestCase</tt>. System tests use Capybara as a
# base and allow you to configure the settings through your
# <tt>application_system_test_case.rb</tt> file that is generated with a new
# application or scaffold.
#
# Here is an example system test:
#
# require 'application_system_test_case'
#
# class Users::CreateTest < ApplicationSystemTestCase
# test "adding a new user" do
# visit users_path
# click_on 'New User'
#
# fill_in 'Name', with: 'Arya'
# click_on 'Create User'
#
# assert_text 'Arya'
# end
# end
#
# When generating an application or scaffold a +application_system_test_case.rb+ will also
# be generated containing the base class for system testing. This is where you
# can change the driver, add Capybara settings, and other configuration for
# your system tests.
#
# require "test_helper"
#
# class ApplicationSystemTestCase < ActionDispatch::SystemTestCase
# driven_by :selenium, using: :chrome, screen_size: [1400, 1400]
# end
#
# By default, <tt>ActionDispatch::SystemTestCase</tt> is driven by the
# Selenium driver, with the Chrome browser, and a browser size of 1400x1400.
#
# Changing the driver configuration options are easy. Let's say you want to use
# and the Firefox browser instead. In your +application_system_test_case.rb+
# file add the following:
#
# require "test_helper"
#
# class ApplicationSystemTestCase < ActionDispatch::SystemTestCase
# driven_by :selenium, using: :firefox
# end
#
# +driven_by+ has a required argument for the driver name. The keyword
# arguments are +:using+ for the browser (not applicable for headless drivers),
# and +:screen_size+ to change the size of the screen taking screenshots.
#
# To use a headless driver, like Poltergeist, update your Gemfile to use
# Poltergeist instead of Selenium and then declare the driver name in the
# +application_system_test_case.rb+ file. In this case you would leave out the +:using+
# option because the driver is headless.
#
# require "test_helper"
# require "capybara/poltergeist"
#
# class ApplicationSystemTestCase < ActionDispatch::SystemTestCase
# driven_by :poltergeist
# end
#
# Because <tt>ActionDispatch::SystemTestCase</tt> is a shim between Capybara
# and Rails, any driver that is supported by Capybara is supported by system
# tests as long as you include the required gems and files.
include Capybara::DSL
include SystemTesting::TestHelpers::SetupAndTeardown
include SystemTesting::TestHelpers::ScreenshotHelper
def self.start_application # :nodoc:
Capybara.app = Rack::Builder.new do
map "/" do
run Rails.application
end
end
end
# System Test configuration options
#
# The defaults settings are Selenium, using Chrome, with a screen size
# of 1400x1400.
#
# Examples:
#
# driven_by :poltergeist
#
# driven_by :selenium, using: :firefox
#
# driven_by :selenium, screen_size: [800, 800]
def self.driven_by(driver, using: :chrome, screen_size: [1400, 1400])
SystemTesting::Driver.new(driver).run
SystemTesting::Server.new.run
SystemTesting::Browser.new(using, screen_size).run if selenium?(driver)
end
def self.selenium?(driver) # :nodoc:
driver == :selenium
end
end
SystemTestCase.start_application
end
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