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teamcapybara--capybara/lib/capybara.rb
2011-04-05 17:42:12 +02:00

230 lines
8.2 KiB
Ruby

require 'timeout'
require 'nokogiri'
require 'xpath'
module Capybara
class CapybaraError < StandardError; end
class DriverNotFoundError < CapybaraError; end
class ElementNotFound < CapybaraError; end
class UnselectNotAllowed < CapybaraError; end
class NotSupportedByDriverError < CapybaraError; end
class TimeoutError < CapybaraError; end
class LocateHiddenElementError < CapybaraError; end
class InfiniteRedirectError < TimeoutError; end
class << self
attr_accessor :asset_root, :app_host, :run_server, :default_host
attr_accessor :server_port, :server_boot_timeout
attr_accessor :default_selector, :default_wait_time, :ignore_hidden_elements, :prefer_visible_elements
attr_accessor :save_and_open_page_path
##
#
# Configure Capybara to suit your needs.
#
# Capybara.configure do |config|
# config.run_server = false
# config.app_host = 'http://www.google.com'
# end
#
# === Configurable options
#
# [asset_root = String] Where static assets are located, used by save_and_open_page
# [app_host = String] The default host to use when giving a relative URL to visit
# [run_server = Boolean] Whether to start a Rack server for the given Rack app (Default: true)
# [default_selector = :css/:xpath] Methods which take a selector use the given type by default (Default: CSS)
# [default_wait_time = Integer] The number of seconds to wait for asynchronous processes to finish (Default: 2)
# [ignore_hidden_elements = Boolean] Whether to ignore hidden elements on the page (Default: false)
# [prefer_visible_elements = Boolean] Whether to prefer visible elements over hidden elements (Default: true)
#
# === DSL Options
#
# when using capybara/dsl, the following options are also available:
#
# [default_driver = Symbol] The name of the driver to use by default. (Default: :rack_test)
# [javascript_driver = Symbol] The name of a driver to use for JavaScript enabled tests. (Default: :selenium)
#
def configure
yield self
end
##
#
# Register a new driver for Capybara.
#
# Capybara.register_driver :rack_test do |app|
# Capybara::Driver::RackTest.new(app)
# end
#
# @param [Symbol] name The name of the new driver
# @yield [app] This block takes a rack app and returns a Capybara driver
# @yieldparam [<Rack>] app The rack application that this driver runs agains. May be nil.
# @yieldreturn [Capybara::Driver::Base] A Capybara driver instance
#
def register_driver(name, &block)
drivers[name] = block
end
##
#
# Add a new selector to Capybara. Selectors can be used by various methods in Capybara
# to find certain elements on the page in a more convenient way. For example adding a
# selector to find certain table rows might look like this:
#
# Capybara.add_selector(:row) do
# xpath { |num| ".//tbody/tr[#{num}]" }
# end
#
# This makes it possible to use this selector in a variety of ways:
#
# find(:row, 3)
# page.find('table#myTable').find(:row, 3).text
# page.find('table#myTable').has_selector?(:row, 3)
# within(:row, 3) { page.should have_content('$100.000') }
#
# It might be convenient to specify that the selector is automatically chosen for certain
# values. This way you don't have to explicitely specify that you are looking for a row, or
# an id. Let's say we want Capybara to treat any Symbols sent into methods like find to be
# treated as though they were element ids. We could achieve this like so:
#
# Capybara.add_selector(:id) do
# xpath { |id| XPath.descendant[XPath.attr(:id) == id.to_s] }
# match { |value| value.is_a?(Symbol) }
# end
#
# Now we can retrieve elements by id like this:
#
# find(:post_123)
#
# Note that this particular selector already ships with Capybara.
#
# @param [Symbol] name The name of the selector to add
# @yield A block executed in the context of the new {Capybara::Selector}
#
def add_selector(name, &block)
Capybara::Selector.add(name, &block)
end
def drivers
@drivers ||= {}
end
##
#
# Register a proc that Capybara will call to run the Rack application.
#
# Capybara.server do |app, port|
# require 'rack/handler/mongrel'
# Rack::Handler::Mongrel.run(app, :Port => port)
# end
#
# By default, Capybara will try to run thin, falling back to webrick.
#
# @yield [app, port] This block recieves a rack app and port and should run a Rack handler
#
def server(&block)
if block_given?
@server = block
else
@server
end
end
##
#
# Wraps the given string, which should contain an HTML document or fragment
# in a {Capybara::Node::Simple} which exposes all {Capybara::Node::Matchers} and
# {Capybara::Node::Finders}. This allows you to query any string containing
# HTML in the exact same way you would query the current document in a Capybara
# session. For example:
#
# node = Capybara.string <<-HTML
# <ul>
# <li id="home">Home</li>
# <li id="projects">Projects</li>
# </ul>
# HTML
#
# node.find('#projects').text # => 'Projects'
# node.has_selector?('li#home', :text => 'Home')
# node.has_selector?(:projects)
# node.find('ul').find('li').text # => 'Home'
#
# @param [String] html An html fragment or document
# @return [Capybara::Node::Simple] A node which has Capybara's finders and matchers
#
def string(html)
Capybara::Node::Simple.new(html)
end
##
#
# Runs Capybara's default server for the given application and port
# under most circumstances you should not have to call this method
# manually.
#
# @param [Rack Application] app The rack application to run
# @param [Fixnum] port The port to run the application on
#
def run_default_server(app, port)
begin
require 'rack/handler/thin'
Thin::Logging.silent = true
Rack::Handler::Thin.run(app, :Port => port)
rescue LoadError
require 'rack/handler/webrick'
Rack::Handler::WEBrick.run(app, :Port => port, :AccessLog => [], :Logger => WEBrick::Log::new(nil, 0))
end
end
def deprecate(method, alternate_method)
warn "DEPRECATED: ##{method} is deprecated, please use ##{alternate_method} instead"
end
end
autoload :Server, 'capybara/server'
autoload :Session, 'capybara/session'
autoload :Selector, 'capybara/selector'
autoload :VERSION, 'capybara/version'
module Node
autoload :Base, 'capybara/node/base'
autoload :Simple, 'capybara/node/simple'
autoload :Element, 'capybara/node/element'
autoload :Document, 'capybara/node/document'
autoload :Finders, 'capybara/node/finders'
autoload :Matchers, 'capybara/node/matchers'
autoload :Actions, 'capybara/node/actions'
end
module Driver
autoload :Base, 'capybara/driver/base'
autoload :Node, 'capybara/driver/node'
autoload :Selenium, 'capybara/driver/selenium_driver'
end
module RackTest
autoload :Driver, 'capybara/rack_test/driver'
autoload :Node, 'capybara/rack_test/node'
autoload :Form, 'capybara/rack_test/form'
autoload :Browser, 'capybara/rack_test/browser'
end
end
Capybara.configure do |config|
config.run_server = true
config.server {|app, port| Capybara.run_default_server(app, port)}
config.server_boot_timeout = 10
config.default_selector = :css
config.default_wait_time = 2
config.ignore_hidden_elements = false
config.prefer_visible_elements = true
config.default_host = "http://www.example.com"
end
Capybara.register_driver :rack_test do |app|
Capybara::RackTest::Driver.new(app)
end
Capybara.register_driver :selenium do |app|
Capybara::Driver::Selenium.new(app)
end