Module: Capybara

Extended by:
DSL, Forwardable
Defined in:
lib/capybara.rb,
lib/capybara/dsl.rb,
lib/capybara/config.rb,
lib/capybara/result.rb,
lib/capybara/server.rb,
lib/capybara/window.rb,
lib/capybara/helpers.rb,
lib/capybara/session.rb,
lib/capybara/version.rb,
lib/capybara/minitest.rb,
lib/capybara/node/base.rb,
lib/capybara/driver/node.rb,
lib/capybara/node/simple.rb,
lib/capybara/node/actions.rb,
lib/capybara/node/element.rb,
lib/capybara/node/finders.rb,
lib/capybara/selector/css.rb,
lib/capybara/minitest/spec.rb,
lib/capybara/node/document.rb,
lib/capybara/node/matchers.rb,
lib/capybara/rspec/matchers.rb,
lib/capybara/server/checker.rb,
lib/capybara/session/config.rb,
lib/capybara/session/matchers.rb,
lib/capybara/spec/spec_helper.rb,
lib/capybara/selector/selector.rb,
lib/capybara/server/middleware.rb,
lib/capybara/queries/base_query.rb,
lib/capybara/queries/text_query.rb,
lib/capybara/queries/match_query.rb,
lib/capybara/queries/style_query.rb,
lib/capybara/queries/title_query.rb,
lib/capybara/rspec/matchers/base.rb,
lib/capybara/selector/definition.rb,
lib/capybara/selector/filter_set.rb,
lib/capybara/queries/sibling_query.rb,
lib/capybara/rspec/matcher_proxies.rb,
lib/capybara/selector/filters/base.rb,
lib/capybara/node/document_matchers.rb,
lib/capybara/queries/ancestor_query.rb,
lib/capybara/queries/selector_query.rb,
lib/capybara/rspec/matchers/compound.rb,
lib/capybara/rspec/matchers/have_text.rb,
lib/capybara/selenium/extensions/find.rb,
lib/capybara/rspec/matchers/have_title.rb,
lib/capybara/server/animation_disabler.rb,
lib/capybara/queries/current_path_query.rb,
lib/capybara/rspec/matchers/count_sugar.rb,
lib/capybara/rspec/matchers/match_style.rb,
lib/capybara/rspec/matchers/match_style.rb,
lib/capybara/selenium/extensions/scroll.rb,
lib/capybara/selenium/logger_suppressor.rb,
lib/capybara/rspec/matchers/have_sibling.rb,
lib/capybara/rspec/matchers/become_closed.rb,
lib/capybara/rspec/matchers/have_ancestor.rb,
lib/capybara/rspec/matchers/have_selector.rb,
lib/capybara/selector/filters/node_filter.rb,
lib/capybara/selector/regexp_disassembler.rb,
lib/capybara/rspec/matchers/match_selector.rb,
lib/capybara/selector/builders/css_builder.rb,
lib/capybara/selector/builders/xpath_builder.rb,
lib/capybara/selector/filters/locator_filter.rb,
lib/capybara/rspec/matchers/have_current_path.rb,
lib/capybara/selector/filters/expression_filter.rb,
lib/capybara/selenium/patches/persistent_client.rb

Defined Under Namespace

Modules: DSL, DSLRSpecProxyInstaller, Driver, Helpers, Minitest, Node, Queries, RSpecMatcherProxies, RSpecMatcherProxyInstaller, RSpecMatchers, RackTest, Selenium, SessionMatchers, SpecHelper Classes: Ambiguous, CapybaraError, Config, DriverNotFoundError, ElementNotFound, ExpectationNotMet, FileNotFound, FrozenInTime, InfiniteRedirectError, ModalNotFound, NotSupportedByDriverError, ReadOnlyElementError, ReadOnlySessionConfig, Result, ScopeError, Selector, Server, Session, SessionConfig, UnselectNotAllowed, Window, WindowError

Constant Summary collapse

VERSION =
'3.22.0'

Class Method Summary collapse

Methods included from DSL

extended, included, page, using_session, using_wait_time

Class Method Details

.add_selector(name, **options) { ... } ⇒ Object

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) { expect(page).to have_content('$100.000') }

Here is another example:

Capybara.add_selector(:id) do
  xpath { |id| XPath.descendant[XPath.attr(:id) == id.to_s] }
end

Note that this particular selector already ships with Capybara.

Yields:

  • A block executed in the context of the new Selector


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# File 'lib/capybara.rb', line 176

def add_selector(name, **options, &block)
  Capybara::Selector.add(name, **options, &block)
end

.allow_gumboObject

See configure


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# File 'lib/capybara.rb', line 43

Config::OPTIONS.each do |method|
  def_delegators :config, method, "#{method}="
end

.always_include_portObject

See configure


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# File 'lib/capybara.rb', line 56

SessionConfig::OPTIONS.each do |method|
  def_delegators :config, method, "#{method}="
end

.appObject

See configure


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# File 'lib/capybara.rb', line 43

Config::OPTIONS.each do |method|
  def_delegators :config, method, "#{method}="
end

.app_hostObject

See configure


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# File 'lib/capybara.rb', line 56

SessionConfig::OPTIONS.each do |method|
  def_delegators :config, method, "#{method}="
end

.configure {|config| ... } ⇒ Object

Configure Capybara to suit your needs.

Capybara.configure do |config|
  config.run_server = false
  config.app_host   = 'http://www.google.com'
end

Configurable options

  • allow_gumbo (Boolean = false) - When nokogumbo is available, whether it will be used to parse HTML strings.
  • always_include_port (Boolean = false) - Whether the Rack server's port should automatically be inserted into every visited URL unless another port is explicitly specified.
  • app_host (String, nil) - The default host to use when giving a relative URL to visit, must be a valid URL e.g. http://www.example.com.
  • asset_host (String = nil) - Where dynamic assets are hosted - will be prepended to relative asset locations if present.
  • automatic_label_click (Boolean = false) - Whether Element#choose, Element#check, Element#uncheck will attempt to click the associated <label> element if the checkbox/radio button are non-visible.
  • automatic_reload (Boolean = true) - Whether to automatically reload elements as Capybara is waiting.
  • default_max_wait_time (Numeric = 2) - The maximum number of seconds to wait for asynchronous processes to finish.
  • default_normalize_ws (Boolean = false) - Whether text predicates and matchers use normalize whitespace behavior.
  • default_selector (:css, :xpath = :css) - Methods which take a selector use the given type by default. See also Selector.
  • default_set_options (Hash = {}) - The default options passed to Element#set.
  • enable_aria_label (Boolean = false) - Whether fields, links, and buttons will match against aria-label attribute.
  • exact (Boolean = false) - Whether locators are matched exactly or with substrings. Only affects selector conditions written using the XPath#is method.
  • exact_text (Boolean = false) - Whether the text matchers and :text filter match exactly or on substrings.
  • ignore_hidden_elements (Boolean = true) - Whether to ignore hidden elements on the page.
  • match (:one, :first, :prefer_exact, :smart = :smart) - The matching strategy to find nodes.
  • predicates_wait (Boolean = true) - Whether Capybara's predicate matchers use waiting behavior by default.
  • raise_server_errors (Boolean = true) - Should errors raised in the server be raised in the tests?
  • reuse_server (Boolean = true) - Whether to reuse the server thread between multiple sessions using the same app object.
  • run_server (Boolean = true) - Whether to start a Rack server for the given Rack app.
  • save_path (String = Dir.pwd) - Where to put pages saved through save_page, save_screenshot, save_and_open_page, or save_and_open_screenshot.
  • server (Symbol = :default (which uses puma)) - The name of the registered server to use when running the app under test.
  • server_errors (Array<Class> = [Exception]) - Error classes that should be raised in the tests if they are raised in the server and raise_server_errors is true.
  • test_id (Symbol, String, nil = nil) - Optional attribute to match locator against with built-in selectors along with id.
  • threadsafe (Boolean = false) - Whether sessions can be configured individually.

DSL Options

When using capybara/dsl, the following options are also available:

  • default_driver (Symbol = :rack_test) - The name of the driver to use by default.
  • javascript_driver (Symbol = :selenium) - The name of a driver to use for JavaScript enabled tests.

Yields:

  • (config)

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# File 'lib/capybara.rb', line 108

def configure
  yield config
end

.current_driverSymbol Also known as: mode


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# File 'lib/capybara.rb', line 255

def current_driver
  if threadsafe
    Thread.current['capybara_current_driver']
  else
    @current_driver
  end || default_driver
end

.current_driver=(name) ⇒ Object


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# File 'lib/capybara.rb', line 264

def current_driver=(name)
  if threadsafe
    Thread.current['capybara_current_driver'] = name
  else
    @current_driver = name
  end
end

.current_sessionCapybara::Session

The current Session based on what is set as app and current_driver.


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# File 'lib/capybara.rb', line 310

def current_session
  specified_session || session_pool["#{current_driver}:#{session_name}:#{app.object_id}"]
end

.default_driverObject

See configure


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# File 'lib/capybara.rb', line 43

Config::OPTIONS.each do |method|
  def_delegators :config, method, "#{method}="
end

.default_max_wait_timeObject

See configure


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# File 'lib/capybara.rb', line 56

SessionConfig::OPTIONS.each do |method|
  def_delegators :config, method, "#{method}="
end

.default_selectorObject

See configure


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# File 'lib/capybara.rb', line 56

SessionConfig::OPTIONS.each do |method|
  def_delegators :config, method, "#{method}="
end

.driversObject


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# File 'lib/capybara.rb', line 198

def drivers
  @drivers ||= {}
end

.HTML(html) ⇒ Nokogiri::HTML::Document

Parse raw html into a document using Nokogiri, and adjust textarea contents as defined by the spec.


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# File 'lib/capybara.rb', line 377

def HTML(html) # rubocop:disable Naming/MethodName
  if Nokogiri.respond_to?(:HTML5) && Capybara.allow_gumbo # Nokogumbo installed and allowed for use
    Nokogiri::HTML5(html).tap do |document|
      document.xpath('//template').each do |template|
        # template elements content is not part of the document
        template.inner_html = ''
      end
      document.xpath('//textarea').each do |textarea|
        # The Nokogumbo HTML5 parser already returns spec compliant contents
        textarea['_capybara_raw_value'] = textarea.content
      end
    end
  else
    Nokogiri::HTML(html).tap do |document|
      document.xpath('//template').each do |template|
        # template elements content is not part of the document
        template.inner_html = ''
      end
      document.xpath('//textarea').each do |textarea|
        textarea['_capybara_raw_value'] = textarea.content.sub(/\A\n/, '')
      end
    end
  end
end

.javascript_driverObject

See configure


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# File 'lib/capybara.rb', line 43

Config::OPTIONS.each do |method|
  def_delegators :config, method, "#{method}="
end

.modify_selector(name) { ... } ⇒ Object

Modify a selector previously created by add_selector. For example, adding a new filter to the :button selector to filter based on button style (a class) might look like this

Capybara.modify_selector(:button) do
  filter (:btn_style, valid_values: [:primary, :secondary]) { |node, style| node[:class].split.include? "btn-#{style}" }
end

Yields:

  • A block executed in the context of the existing Selector


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# File 'lib/capybara.rb', line 194

def modify_selector(name, &block)
  Capybara::Selector.update(name, &block)
end

.register_driver(name) {|app| ... } ⇒ Object

Register a new driver for Capybara.

Capybara.register_driver :rack_test do |app|
  Capybara::RackTest::Driver.new(app)
end

Yields:

  • (app)

    This block takes a rack app and returns a Capybara driver

Yield Parameters:

  • app (<Rack>)

    The rack application that this driver runs against. May be nil.

Yield Returns:


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# File 'lib/capybara.rb', line 125

def register_driver(name, &block)
  drivers[name] = block
end

.register_server(name) {|app, port, host| ... } ⇒ Object

Register a new server for Capybara.

Capybara.register_server :webrick do |app, port, host|
  require 'rack/handler/webrick'
  Rack::Handler::WEBrick.run(app, ...)
end

Yields:

  • (app, port, host)

    This block takes a rack app and a port and returns a rack server listening on that port

Yield Parameters:

  • app (<Rack>)

    The rack application that this server will contain.

  • port

    The port number the server should listen on

  • host

    The host/ip to bind to


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# File 'lib/capybara.rb', line 144

def register_server(name, &block)
  servers[name.to_sym] = block
end

.reset_sessions!Object Also known as: reset!

Reset sessions, cleaning out the pool of sessions. This will remove any session information such as cookies.


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# File 'lib/capybara.rb', line 319

def reset_sessions!
  # reset in reverse so sessions that started servers are reset last
  session_pool.reverse_each { |_mode, session| session.reset! }
end

.reuse_serverObject

See configure


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# File 'lib/capybara.rb', line 43

Config::OPTIONS.each do |method|
  def_delegators :config, method, "#{method}="
end

.run_default_server(app, port) ⇒ Object

Runs Capybara's default server for the given application and port under most circumstances you should not have to call this method manually.


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# File 'lib/capybara.rb', line 247

def run_default_server(app, port)
  servers[:puma].call(app, port, server_host)
end

.serverObject

See configure


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# File 'lib/capybara.rb', line 43

Config::OPTIONS.each do |method|
  def_delegators :config, method, "#{method}="
end

.serversObject


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# File 'lib/capybara.rb', line 202

def servers
  @servers ||= {}
end

.session_nameSymbol

The current session name.


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# File 'lib/capybara.rb', line 331

def session_name
  if threadsafe
    Thread.current['capybara_session_name'] ||= :default
  else
    @session_name ||= :default
  end
end

.session_name=(name) ⇒ Object


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# File 'lib/capybara.rb', line 339

def session_name=(name)
  if threadsafe
    Thread.current['capybara_session_name'] = name
  else
    @session_name = name
  end
end

.session_optionsObject


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# File 'lib/capybara.rb', line 402

def session_options
  config.session_options
end

.string(html) ⇒ Capybara::Node::Simple

Wraps the given string, which should contain an HTML document or fragment in a Capybara::Node::Simple which exposes all Capybara::Node::Matchers, Capybara::Node::Finders and Capybara::Node::DocumentMatchers. This allows you to query any string containing HTML in the exact same way you would query the current document in a Capybara session.

Examples:

A single element

node = Capybara.string('<a href="foo">bar</a>')
anchor = node.first('a')
anchor[:href] #=> 'foo'
anchor.text #=> 'bar'

Multiple elements

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:first-child').text # => 'Home'

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# File 'lib/capybara.rb', line 234

def string(html)
  Capybara::Node::Simple.new(html)
end

.threadsafeObject

See configure


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# File 'lib/capybara.rb', line 43

Config::OPTIONS.each do |method|
  def_delegators :config, method, "#{method}="
end

.use_default_driverObject

Use the default driver as the current driver


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# File 'lib/capybara.rb', line 276

def use_default_driver
  self.current_driver = nil
end

.using_driver(driver) ⇒ Object

Yield a block using a specific driver


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# File 'lib/capybara.rb', line 284

def using_driver(driver)
  previous_driver = Capybara.current_driver
  Capybara.current_driver = driver
  yield
ensure
  self.current_driver = previous_driver
end

.using_session(name_or_session) ⇒ Object

Yield a block using a specific session name or Session instance.


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# File 'lib/capybara.rb', line 351

def using_session(name_or_session)
  previous_session_info = {
    specified_session: specified_session,
    session_name: session_name,
    current_driver: current_driver,
    app: app
  }
  self.specified_session = self.session_name = nil
  if name_or_session.is_a? Capybara::Session
    self.specified_session = name_or_session
  else
    self.session_name = name_or_session
  end
  yield
ensure
  self.session_name, self.specified_session = previous_session_info.values_at(:session_name, :specified_session)
  self.current_driver, self.app = previous_session_info.values_at(:current_driver, :app) if threadsafe
end

.using_wait_time(seconds) ⇒ Object

Yield a block using a specific wait time


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# File 'lib/capybara.rb', line 296

def using_wait_time(seconds)
  previous_wait_time = Capybara.default_max_wait_time
  Capybara.default_max_wait_time = seconds
  yield
ensure
  Capybara.default_max_wait_time = previous_wait_time
end