Screenshot helper for system testing.
# File actionpack/lib/action_dispatch/system_testing/test_helpers/screenshot_helper.rb, line 44 def take_failed_screenshot take_screenshot if failed? && supports_screenshot? && Capybara::Session.instance_created? end
Takes a screenshot of the current page in the browser if the test failed.
take_failed_screenshot is called during system test teardown.
# File actionpack/lib/action_dispatch/system_testing/test_helpers/screenshot_helper.rb, line 33 def take_screenshot increment_unique save_html if save_html? save_image puts display_image end
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. You can take multiple screenshots per test to investigate changes at different points during your test. These will be named with a sequential prefix (or 'failed' for failing tests)
The screenshot will be displayed in your console, if supported.
The default screenshots directory is
tmp/screenshots but you can set a different one with
You can set the
RAILS_SYSTEM_TESTING_SCREENSHOT_HTML environment variable to save the HTML from the page that is being screenshotted so you can investigate the elements on the page at the time of the screenshot
You can set the
RAILS_SYSTEM_TESTING_SCREENSHOT environment variable to control the output. Possible values are:
Only displays the screenshot path. This is the default value.
Display the screenshot in the terminal using the iTerm image protocol (iterm2.com/documentation-images.html).
Display the screenshot in the terminal, using the terminal artifact format (buildkite.github.io/terminal-to-html/inline-images/).
© 2004–2021 David Heinemeier Hansson
Licensed under the MIT License.