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/selenium/patches/logs.rb,
lib/capybara/node/document_matchers.rb,
lib/capybara/queries/ancestor_query.rb,
lib/capybara/queries/selector_query.rb,
lib/capybara/registration_container.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/queries/active_element_query.rb,
lib/capybara/rspec/matchers/become_closed.rb,
lib/capybara/rspec/matchers/have_ancestor.rb,
lib/capybara/rspec/matchers/have_selector.rb,
lib/capybara/rspec/matchers/spatial_sugar.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/selenium/patches/is_displayed.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, RegistrationContainer, Result, ScopeError, Selector, Server, Session, SessionConfig, UnselectNotAllowed, Window, WindowError

Constant Summary collapse

VERSION =
'3.37.1'

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.

Parameters:

  • name (Symbol)

    The name of the selector to add

Yields:

  • A block executed in the context of the new Selector


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# File 'lib/capybara.rb', line 181

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

.always_include_portObject

See configure


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# File 'lib/capybara.rb', line 57

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

.appObject

See configure


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# File 'lib/capybara.rb', line 44

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

.app_hostObject

See configure


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# File 'lib/capybara.rb', line 57

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

  • use_html5_parsing (Boolean = false) - When Nokogiri >= 1.12.0 or nokogumbo is installed, whether HTML5 parsing will be used for 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.
  • enable_aria_role (Boolean = false) - Selectors will check for relevant aria role (currently only button).
  • 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_port (Integer) - The port Capybara will run the application server on, if not specified a random port will be used.
  • server_host (String = "127.0.0.1") - The IP address Capybara will bind the application server to. If the test application is to be accessed from an external host, you will want to change this to "0.0.0.0" or to a more specific IP address that your test client can reach.
  • 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.
  • w3c_click_offset (Boolean = 'false') - Whether click offsets should be from element center (true) or top left (false)

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 113

def configure
  yield config
end

.current_driverSymbol Also known as: mode

Returns The name of the driver currently in use.

Returns:

  • (Symbol)

    The name of the driver currently in use


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# File 'lib/capybara.rb', line 260

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 269

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.

Returns:


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# File 'lib/capybara.rb', line 315

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 44

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 57

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

.default_selectorObject

See configure


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# File 'lib/capybara.rb', line 57

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

.driversObject


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# File 'lib/capybara.rb', line 203

def drivers
  @drivers ||= RegistrationContainer.new
end

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

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

Parameters:

  • html (String)

    The raw html

Returns:

  • (Nokogiri::HTML::Document)

    HTML document


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# File 'lib/capybara.rb', line 388

def HTML(html) # rubocop:disable Naming/MethodName
  # Nokogiri >= 1.12.0 or Nokogumbo installed and allowed for use
  html_parser, using_html5 = if defined?(Nokogiri::HTML5) && Capybara.use_html5_parsing
    [Nokogiri::HTML5, true]
  else
    [defined?(Nokogiri::HTML4) ? Nokogiri::HTML4 : Nokogiri::HTML, false]
  end

  html_parser.parse(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 Nokogiri HTML5 parser already returns spec compliant contents
      textarea['_capybara_raw_value'] = using_html5 ? textarea.content : textarea.content.delete_prefix("\n")
    end
  end
end

.javascript_driverObject

See configure


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# File 'lib/capybara.rb', line 44

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

Parameters:

  • name (Symbol)

    The name of the selector to modify

Yields:

  • A block executed in the context of the existing Selector


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# File 'lib/capybara.rb', line 199

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

Parameters:

  • name (Symbol)

    The name of the new driver

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 130

def register_driver(name, &block)
  drivers.send(:register, 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

Parameters:

  • name (Symbol)

    The name of the new driver

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 149

def register_server(name, &block)
  servers.send(:register, 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 324

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 44

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.

Parameters:

  • app (Rack Application)

    The rack application to run

  • port (Integer)

    The port to run the application on


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# File 'lib/capybara.rb', line 252

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 44

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

.serversObject


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# File 'lib/capybara.rb', line 207

def servers
  @servers ||= RegistrationContainer.new
end

.session_nameSymbol

The current session name.

Returns:

  • (Symbol)

    The name of the currently used session.


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# File 'lib/capybara.rb', line 336

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 344

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 408

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'

Parameters:

  • html (String)

    An html fragment or document

Returns:


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# File 'lib/capybara.rb', line 239

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

.threadsafeObject

See configure


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# File 'lib/capybara.rb', line 44

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 281

def use_default_driver
  self.current_driver = nil
end

.use_html5_parsingObject

See configure


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# File 'lib/capybara.rb', line 44

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

.using_driver(driver) ⇒ Object

Yield a block using a specific driver


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# File 'lib/capybara.rb', line 289

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, &block) ⇒ Object

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


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# File 'lib/capybara.rb', line 356

def using_session(name_or_session, &block)
  previous_session = current_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

  if block.arity.zero?
    yield
  else
    yield current_session, previous_session
  end
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 301

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