diff options
Diffstat (limited to 'actionpack/lib/action_dispatch/system_testing/test_helpers')
3 files changed, 153 insertions, 0 deletions
diff --git a/actionpack/lib/action_dispatch/system_testing/test_helpers/screenshot_helper.rb b/actionpack/lib/action_dispatch/system_testing/test_helpers/screenshot_helper.rb new file mode 100644 index 0000000000..884fb51d18 --- /dev/null +++ b/actionpack/lib/action_dispatch/system_testing/test_helpers/screenshot_helper.rb @@ -0,0 +1,96 @@ +# frozen_string_literal: true + +module ActionDispatch + module SystemTesting + module TestHelpers + # Screenshot helper for system testing. + module ScreenshotHelper + # Takes a screenshot of the current page in the browser. + # + # +take_screenshot+ can be used at any point in your system tests to take + # a screenshot of the current state. This can be useful for debugging or + # automating visual testing. + # + # The screenshot will be displayed in your console, if supported. + # + # You can set the +RAILS_SYSTEM_TESTING_SCREENSHOT+ environment variable to + # control the output. Possible values are: + # * [+simple+ (default)] Only displays the screenshot path. + # This is the default value. + # * [+inline+] Display the screenshot in the terminal using the + # iTerm image protocol (https://iterm2.com/documentation-images.html). + # * [+artifact+] Display the screenshot in the terminal, using the terminal + # artifact format (https://buildkite.github.io/terminal/inline-images/). + def take_screenshot + save_image + puts display_image + end + + # Takes a screenshot of the current page in the browser if the test + # failed. + # + # +take_failed_screenshot+ is included in <tt>application_system_test_case.rb</tt> + # that is generated with the application. To take screenshots when a test + # fails add +take_failed_screenshot+ to the teardown block before clearing + # sessions. + def take_failed_screenshot + take_screenshot if failed? && supports_screenshot? + end + + private + def image_name + failed? ? "failures_#{method_name}" : method_name + end + + def image_path + @image_path ||= absolute_image_path.to_s + end + + def absolute_image_path + Rails.root.join("tmp/screenshots/#{image_name}.png") + end + + def save_image + page.save_screenshot(absolute_image_path) + end + + def output_type + # Environment variables have priority + output_type = ENV["RAILS_SYSTEM_TESTING_SCREENSHOT"] || ENV["CAPYBARA_INLINE_SCREENSHOT"] + + # Default to outputting a path to the screenshot + output_type ||= "simple" + + output_type + end + + def display_image + message = +"[Screenshot]: #{image_path}\n" + + case output_type + when "artifact" + message << "\e]1338;url=artifact://#{absolute_image_path}\a\n" + when "inline" + name = inline_base64(File.basename(absolute_image_path)) + image = inline_base64(File.read(absolute_image_path)) + message << "\e]1337;File=name=#{name};height=400px;inline=1:#{image}\a\n" + end + + message + end + + def inline_base64(path) + Base64.strict_encode64(path) + end + + def failed? + !passed? && !skipped? + end + + def supports_screenshot? + Capybara.current_driver != :rack_test + end + end + end + end +end diff --git a/actionpack/lib/action_dispatch/system_testing/test_helpers/setup_and_teardown.rb b/actionpack/lib/action_dispatch/system_testing/test_helpers/setup_and_teardown.rb new file mode 100644 index 0000000000..600e9c733b --- /dev/null +++ b/actionpack/lib/action_dispatch/system_testing/test_helpers/setup_and_teardown.rb @@ -0,0 +1,31 @@ +# frozen_string_literal: true + +module ActionDispatch + module SystemTesting + module TestHelpers + module SetupAndTeardown # :nodoc: + DEFAULT_HOST = "http://127.0.0.1" + + def host!(host) + super + Capybara.app_host = host + end + + def before_setup + host! DEFAULT_HOST + super + end + + def after_teardown + begin + take_failed_screenshot + ensure + Capybara.reset_sessions! + end + ensure + super + end + end + end + end +end diff --git a/actionpack/lib/action_dispatch/system_testing/test_helpers/undef_methods.rb b/actionpack/lib/action_dispatch/system_testing/test_helpers/undef_methods.rb new file mode 100644 index 0000000000..d64be3b3d9 --- /dev/null +++ b/actionpack/lib/action_dispatch/system_testing/test_helpers/undef_methods.rb @@ -0,0 +1,26 @@ +# frozen_string_literal: true + +module ActionDispatch + module SystemTesting + module TestHelpers + module UndefMethods # :nodoc: + extend ActiveSupport::Concern + included do + METHODS = %i(get post put patch delete).freeze + + METHODS.each do |verb| + undef_method verb + end + + def method_missing(method, *args, &block) + if METHODS.include?(method) + raise NoMethodError, "System tests cannot make direct requests via ##{method}; use #visit and #click_on instead. See http://www.rubydoc.info/github/teamcapybara/capybara/master#The_DSL for more information." + else + super + end + end + end + end + end + end +end |