79 lines
3.3 KiB
Ruby
79 lines
3.3 KiB
Ruby
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# Produce a screenshot for each failure.
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require 'capybara-screenshot/cucumber'
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# Use environment variables to set the host and the port used for tests:
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CAPYBARA_HOST = ENV["DOCKER"] ? `hostname`.strip : "localhost"
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CAPYBARA_PORT = ENV["CAPYBARA_PORT"] || 5100
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CAPYBARA_URL = "http://#{CAPYBARA_HOST}:#{CAPYBARA_PORT}".freeze
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Capybara.configure do |config|
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# Capybara 1.x behavior.
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config.match = :prefer_exact
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# Increased timeout to minimise failures on CI servers.
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config.default_max_wait_time = 25
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# Capybara 2.x behavior: match rendered text, squish whitespace by default.
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config.default_normalize_ws = true
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# Capybara 3.x changes the default server to Puma; we have WEBRick
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# (a dependency of Mechanize, used for importing; also used for the
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# Rails development server), so we'll stick with that for now.
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config.server = :webrick
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# Make server accessible from the outside world. Note that we don't use
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# CAPYBARA_HOST here because this is the IP that the server binds to, not the
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# host that we want to use for tests:
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config.server_host = "0.0.0.0" if ENV["CHROME_URL"]
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# Specify the port used for tests:
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config.server_port = CAPYBARA_PORT
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end
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# Modified from https://github.com/teamcapybara/capybara/blob/49cf69c40f4b25931aecab162fb3285d8fe5bff7/lib/capybara/registrations/drivers.rb#L31-L42
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Capybara.register_driver :selenium_chrome_headless do |app|
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browser_options = ::Selenium::WebDriver::Chrome::Options.new.tap do |opts|
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opts.add_argument("--headless")
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# Workaround from https://bugs.chromium.org/p/chromedriver/issues/detail?id=2660#c13
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opts.add_argument("--disable-site-isolation-trials")
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end
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options = if ENV["CHROME_URL"]
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# Special handling for Docker, modified from the instructions at
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# https://evilmartians.com/chronicles/system-of-a-test-setting-up-end-to-end-rails-testing
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{ browser: :remote, options: browser_options, url: ENV["CHROME_URL"] }
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else
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{ browser: :chrome, options: browser_options }
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end
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Capybara::Selenium::Driver.new(app, **options)
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end
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# Make sure we get full-page screenshots on failure:
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Capybara::Screenshot.register_driver :selenium_chrome_headless do |driver, path|
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# From https://github.com/madebylotus/capybara-full_screenshot/blob/bf1c3ede89e01b847f7b0dc7d71cd73b25175cd5/lib/capybara/full_screenshot/rspec_helpers.rb#L5-L8
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width = Capybara.page.execute_script(<<~WIDTH_SCRIPT.squish)
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return Math.max(document.body.scrollWidth,
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document.body.offsetWidth,
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document.documentElement.clientWidth,
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document.documentElement.scrollWidth,
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document.documentElement.offsetWidth);
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WIDTH_SCRIPT
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height = Capybara.page.execute_script(<<~HEIGHT_SCRIPT.squish)
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return Math.max(document.body.scrollHeight,
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document.body.offsetHeight,
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document.documentElement.clientHeight,
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document.documentElement.scrollHeight,
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document.documentElement.offsetHeight);
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HEIGHT_SCRIPT
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Capybara.current_session.current_window.resize_to(width + 100, height + 100)
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driver.browser.save_screenshot(path)
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end
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Capybara.default_driver = :rack_test
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Capybara.javascript_driver = :selenium_chrome_headless
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