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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.
def take_screenshot
save_image
puts "[Screenshot]: #{image_path}"
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
"tmp/screenshots/#{image_name}.png"
end
def save_image
page.save_screenshot(Rails.root.join(image_path))
end
def display_image
if ENV["CAPYBARA_INLINE_SCREENSHOT"] == "artifact"
"\e]1338;url=artifact://#{image_path}\a"
else
name = inline_base64(File.basename(image_path))
image = inline_base64(File.read(image_path))
"\e]1337;File=name=#{name};height=400px;inline=1:#{image}\a"
end
end
def inline_base64(path)
Base64.encode64(path).gsub("\n", "")
end
def failed?
!passed? && !skipped?
end
def supports_screenshot?
Capybara.current_driver != :rack_test
end
end
end
end
end
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