teamcapybara/capybara · error · Capybara::NotSupportedByDriverError

Capybara::Driver::Base#frame_title

Error message

Capybara::Driver::Base#frame_title

What it means

Error "Capybara::Driver::Base#frame_title" thrown in teamcapybara/capybara.

Source

Thrown at lib/capybara/driver/base.rb:85

    raise Capybara::NotSupportedByDriverError, 'Capybara::Driver::Base#active_element'
  end

  ##
  #
  # @param frame [Capybara::Node::Element, :parent, :top]  The iframe element to switch to
  #
  def switch_to_frame(frame)
    raise Capybara::NotSupportedByDriverError, 'Capybara::Driver::Base#switch_to_frame'
  end

  def frame_title
    find_xpath('/html/head/title').map(&:all_text).first.to_s
  end

  def frame_url
    evaluate_script('document.location.href')
  rescue Capybara::NotSupportedByDriverError
    raise Capybara::NotSupportedByDriverError, 'Capybara::Driver::Base#frame_title'
  end

  def current_window_handle
    raise Capybara::NotSupportedByDriverError, 'Capybara::Driver::Base#current_window_handle'
  end

  def window_size(handle)
    raise Capybara::NotSupportedByDriverError, 'Capybara::Driver::Base#window_size'
  end

  def resize_window_to(handle, width, height)
    raise Capybara::NotSupportedByDriverError, 'Capybara::Driver::Base#resize_window_to'
  end

  def maximize_window(handle)
    raise Capybara::NotSupportedByDriverError, 'Capybara::Driver::Base#maximize_window'
  end

View on GitHub (pinned to 15b5fdb76e)

When it happens

Trigger: Thrown at lib/capybara/driver/base.rb:85 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of teamcapybara/capybara@15b5fdb76e (2026-08-21). Data as JSON: /api/errors/ad88bc8a89a9a9c3. Report an issue: GitHub.