Class: Capybara::Selenium::Driver

Inherits:
Driver::Base show all
Defined in:
lib/capybara/selenium/driver.rb

Constant Summary collapse

DEFAULT_OPTIONS = 
{
  browser: :firefox,
  clear_local_storage: false,
  clear_session_storage: false
}.freeze
SPECIAL_OPTIONS = 
%i[browser clear_local_storage clear_session_storage].freeze

Instance Attribute Summary collapse

Attributes inherited from Driver::Base

#session

Instance Method Summary collapse

Methods inherited from Driver::Base

#response_headers, #session_options, #status_code

Constructor Details

#initialize(app, **options) ⇒ Driver

Returns a new instance of Driver



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# File 'lib/capybara/selenium/driver.rb', line 39

def initialize(app, **options)
  load_selenium
  @session = nil
  @app = app
  @browser = nil
  @exit_status = nil
  @frame_handles = {}
  @options = DEFAULT_OPTIONS.merge(options)
end

Instance Attribute Details

#app ⇒ Object (readonly)

Returns the value of attribute app



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# File 'lib/capybara/selenium/driver.rb', line 14

def app
  @app
end

#options ⇒ Object (readonly)

Returns the value of attribute options



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# File 'lib/capybara/selenium/driver.rb', line 14

def options
  @options
end

Instance Method Details

#accept_modal(_type, **options) ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 217

def accept_modal(_type, **options)
  if headless_chrome?
    raise ArgumentError, "Block that triggers the system modal is missing" unless block_given?
    insert_modal_handlers(true, options[:with])
    yield
    find_headless_modal(options)
  else
    yield if block_given?
    modal = find_modal(options)

    modal.send_keys options[:with] if options[:with]

    message = modal.text
    modal.accept
    message
  end
end

#browser ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 16

def browser
  unless @browser
    if firefox?
      options[:desired_capabilities] ||= {}
      options[:desired_capabilities][:unexpectedAlertBehaviour] = "ignore"
    end

    @processed_options = options.reject { |key, _val| SPECIAL_OPTIONS.include?(key) }
    @browser = Selenium::WebDriver.for(options[:browser], @processed_options)

    @w3c = ((defined?(Selenium::WebDriver::Remote::W3CCapabilities) && @browser.capabilities.is_a?(Selenium::WebDriver::Remote::W3CCapabilities)) ||
            (defined?(Selenium::WebDriver::Remote::W3C::Capabilities) && @browser.capabilities.is_a?(Selenium::WebDriver::Remote::W3C::Capabilities)))
    main = Process.pid
    at_exit do
      # Store the exit status of the test run since it goes away after calling the at_exit proc...
      @exit_status = $ERROR_INFO.status if $ERROR_INFO.is_a?(SystemExit)
      quit if Process.pid == main
      exit @exit_status if @exit_status # Force exit with stored status
    end
  end
  @browser
end

#chrome? ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean) 


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# File 'lib/capybara/selenium/driver.rb', line 291

def chrome?
  browser_name == "chrome"
end

#close_window(handle) ⇒ Object 



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

def close_window(handle)
  within_given_window(handle) do
    browser.close
  end
end

#current_url ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 76

def current_url
  browser.current_url
end

#current_window_handle ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 170

def current_window_handle
  browser.window_handle
end

#dismiss_modal(_type, **options) ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 235

def dismiss_modal(_type, **options)
  if headless_chrome?
    raise ArgumentError, "Block that triggers the system modal is missing" unless block_given?
    insert_modal_handlers(false, options[:with])
    yield
    find_headless_modal(options)
  else
    yield if block_given?
    modal = find_modal(options)
    message = modal.text
    modal.dismiss
    message
  end
end

#evaluate_async_script(script, *args) ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 100

def evaluate_async_script(script, *args)
  browser.manage.timeouts.script_timeout = Capybara.default_max_wait_time
  result = browser.execute_async_script(script, *args.map { |arg| arg.is_a?(Capybara::Selenium::Node) ? arg.native : arg })
  unwrap_script_result(result)
end

#evaluate_script(script, *args) ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 95

def evaluate_script(script, *args)
  result = execute_script("return #{script}", *args)
  unwrap_script_result(result)
end

#execute_script(script, *args) ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 91

def execute_script(script, *args)
  browser.execute_script(script, *args.map { |arg| arg.is_a?(Capybara::Selenium::Node) ? arg.native : arg })
end

#find_css(selector) ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 84

def find_css(selector)
  browser.find_elements(:css, selector).map { |node| Capybara::Selenium::Node.new(self, node) }
end

#find_xpath(selector) ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 80

def find_xpath(selector)
  browser.find_elements(:xpath, selector).map { |node| Capybara::Selenium::Node.new(self, node) }
end

#firefox? ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean) 


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# File 'lib/capybara/selenium/driver.rb', line 286

def firefox?
  browser_name == "firefox"
end

#go_back ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 60

def go_back
  browser.navigate.back
end

#go_forward ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 64

def go_forward
  browser.navigate.forward
end

#headless_chrome? ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean) 


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

def headless_chrome?
  if chrome?
    caps = @processed_options[:desired_capabilities]
    chrome_options = caps[:chrome_options] || caps[:chromeOptions] || {}
    args = chrome_options['args'] || chrome_options[:args] || []
    return args.include?("--headless") || args.include?("headless")
  end
  return false
end

#html ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 68

def html
  browser.page_source
end

#invalid_element_errors ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 263

def invalid_element_errors
  [
    ::Selenium::WebDriver::Error::StaleElementReferenceError,
    ::Selenium::WebDriver::Error::UnhandledError,
    ::Selenium::WebDriver::Error::ElementNotVisibleError,
    ::Selenium::WebDriver::Error::InvalidSelectorError, # Work around a race condition that can occur with chromedriver and #go_back/#go_forward
    ::Selenium::WebDriver::Error::ElementNotInteractableError,
    ::Selenium::WebDriver::Error::ElementClickInterceptedError,
    ::Selenium::WebDriver::Error::InvalidElementStateError,
    ::Selenium::WebDriver::Error::ElementNotSelectableError
  ]
end

#marionette? ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean) 


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# File 'lib/capybara/selenium/driver.rb', line 281

def marionette?
  firefox? && browser && @w3c
end

#maximize_window(handle) ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 192

def maximize_window(handle)
  within_given_window(handle) do
    browser.manage.window.maximize
  end
  sleep 0.1 # work around for https://code.google.com/p/selenium/issues/detail?id=7405
end

#needs_server? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/capybara/selenium/driver.rb', line 89

def needs_server?; true; end

#no_such_window_error ⇒ Object 



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

def no_such_window_error
  Selenium::WebDriver::Error::NoSuchWindowError
end

#open_new_window ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 209

def open_new_window
  browser.execute_script('window.open();')
end

#quit ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 250

def quit
  @browser.quit if @browser
rescue Errno::ECONNREFUSED
  # Browser must have already gone
rescue Selenium::WebDriver::Error::UnknownError => e
  unless silenced_unknown_error_message?(e.message) # Most likely already gone
    # probably already gone but not sure - so warn
    warn "Ignoring Selenium UnknownError during driver quit: #{e.message}"
  end
ensure
  @browser = nil
end

#refresh ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 53

def refresh
  accept_modal(nil, wait: 0.1) do
    browser.navigate.refresh
  end
rescue Capybara::ModalNotFound
end

#reset! ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 110

def reset!
  # Use instance variable directly so we avoid starting the browser just to reset the session
  return unless @browser

  navigated = false
  start_time = Capybara::Helpers.monotonic_time
  begin
    unless navigated
      # Only trigger a navigation if we haven't done it already, otherwise it
      # can trigger an endless series of unload modals
      begin
        @browser.manage.delete_all_cookies
        clear_storage
      rescue Selenium::WebDriver::Error::UnhandledError
        # delete_all_cookies fails when we've previously gone
        # to about:blank, so we rescue this error and do nothing
        # instead.
      end
      @browser.navigate.to("about:blank")
    end
    navigated = true

    # Ensure the page is empty and trigger an UnhandledAlertError for any modals that appear during unload
    until find_xpath("/html/body/*").empty?
      raise Capybara::ExpectationNotMet, 'Timed out waiting for Selenium session reset' if (Capybara::Helpers.monotonic_time - start_time) >= 10
      sleep 0.05
    end
  rescue Selenium::WebDriver::Error::UnhandledAlertError, Selenium::WebDriver::Error::UnexpectedAlertOpenError
    # This error is thrown if an unhandled alert is on the page
    # Firefox appears to automatically dismiss this alert, chrome does not
    # We'll try to accept it
    begin
      @browser.switch_to.alert.accept
      sleep 0.25 # allow time for the modal to be handled
    rescue modal_error
      # The alert is now gone - nothing to do
    end
    # try cleaning up the browser again
    retry
  end
end

#resize_window_to(handle, width, height) ⇒ Object 



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

def resize_window_to(handle, width, height)
  within_given_window(handle) do
    # Don't set the size if already set - See https://github.com/mozilla/geckodriver/issues/643
    if marionette? && (window_size(handle) == [width, height])
      {}
    else
      browser.manage.window.resize_to(width, height)
    end
  end
end

#save_screenshot(path, **_options) ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 106

def save_screenshot(path, **_options)
  browser.save_screenshot(path)
end

#switch_to_frame(frame) ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 152

def switch_to_frame(frame)
  case frame
  when :top
    @frame_handles[browser.window_handle] = []
    browser.switch_to.default_content
  when :parent
    # would love to use browser.switch_to.parent_frame here
    # but it has an issue if the current frame is removed from within it
    @frame_handles[browser.window_handle].pop
    browser.switch_to.default_content
    @frame_handles[browser.window_handle].each { |fh| browser.switch_to.frame(fh) }
  else
    @frame_handles[browser.window_handle] ||= []
    @frame_handles[browser.window_handle] << frame.native
    browser.switch_to.frame(frame.native)
  end
end

#switch_to_window(handle) ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 213

def switch_to_window(handle)
  browser.switch_to.window handle
end

#title ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 72

def title
  browser.title
end

#visit(path) ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 49

def visit(path)
  browser.navigate.to(path)
end

#wait? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/capybara/selenium/driver.rb', line 88

def wait?; true; end

#window_handles ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 205

def window_handles
  browser.window_handles
end

#window_size(handle) ⇒ Object 



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# File 'lib/capybara/selenium/driver.rb', line 174

def window_size(handle)
  within_given_window(handle) do
    size = browser.manage.window.size
    [size.width, size.height]
  end
end