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# frozen_string_literal: true
# rubocop:disable Style/GlobalVars
require 'capybara/rails'
require 'capybara/rspec'
require 'capybara-screenshot/rspec'
require 'selenium-webdriver'
# Give CI some extra time
timeout = ENV['CI'] || ENV['CI_SERVER'] ? 60 : 30
# Define an error class for JS console messages
JSConsoleError = Class.new(StandardError)
# Filter out innocuous JS console messages
JS_CONSOLE_FILTER = Regexp.union([
'"[HMR] Waiting for update signal from WDS..."',
'"[WDS] Hot Module Replacement enabled."',
'"[WDS] Live Reloading enabled."',
'Download the Vue Devtools extension',
'Download the Apollo DevTools'
])
CAPYBARA_WINDOW_SIZE = [1366, 768].freeze
# Run Workhorse on the given host and port, proxying to Puma on a UNIX socket,
# for a closer-to-production experience
Capybara.register_server :puma_via_workhorse do |app, port, host, **options|
file = Tempfile.new
socket_path = file.path
file.close! # We just want the filename
TestEnv.with_workhorse(TestEnv.workhorse_dir, host, port, socket_path) do
Capybara.servers[:puma].call(app, nil, socket_path, **options)
end
end
Capybara.register_driver :chrome do |app|
capabilities = Selenium::WebDriver::Remote::Capabilities.chrome(
# This enables access to logs with `page.driver.manage.get_log(:browser)`
loggingPrefs: {
browser: "ALL",
client: "ALL",
driver: "ALL",
server: "ALL"
}
)
options = Selenium::WebDriver::Chrome::Options.new
options.add_argument("window-size=#{CAPYBARA_WINDOW_SIZE.join(',')}")
# Chrome won't work properly in a Docker container in sandbox mode
options.add_argument("no-sandbox")
# Run headless by default unless CHROME_HEADLESS specified
options.add_argument("headless") unless ENV['CHROME_HEADLESS'] =~ /^(false|no|0)$/i
# Disable /dev/shm use in CI. See https://gitlab.com/gitlab-org/gitlab/issues/4252
options.add_argument("disable-dev-shm-usage") if ENV['CI'] || ENV['CI_SERVER']
# Explicitly set user-data-dir to prevent crashes. See https://gitlab.com/gitlab-org/gitlab-foss/issues/58882#note_179811508
options.add_argument("user-data-dir=/tmp/chrome") if ENV['CI'] || ENV['CI_SERVER']
# Chrome 75 defaults to W3C mode which doesn't allow console log access
options.add_option(:w3c, false)
Capybara::Selenium::Driver.new(
app,
browser: :chrome,
desired_capabilities: capabilities,
options: options
)
end
Capybara.server = :puma_via_workhorse
Capybara.javascript_driver = :chrome
Capybara.default_max_wait_time = timeout
Capybara.ignore_hidden_elements = true
Capybara.default_normalize_ws = true
Capybara.enable_aria_label = true
Capybara::Screenshot.append_timestamp = false
Capybara::Screenshot.register_filename_prefix_formatter(:rspec) do |example|
example.full_description.downcase.parameterize(separator: "_")[0..99]
end
# Keep only the screenshots generated from the last failing test suite
Capybara::Screenshot.prune_strategy = :keep_last_run
# From https://github.com/mattheworiordan/capybara-screenshot/issues/84#issuecomment-41219326
Capybara::Screenshot.register_driver(:chrome) do |driver, path|
driver.browser.save_screenshot(path)
end
RSpec.configure do |config|
config.include CapybaraHelpers, type: :feature
config.before(:context, :js) do
# This prevents Selenium from creating thousands of connections while waiting for
# an element to appear
webmock_enable_with_http_connect_on_start!
next if $capybara_server_already_started
TestEnv.eager_load_driver_server
$capybara_server_already_started = true
end
config.after(:context, :js) do
# WebMock doesn't stub connections, so we need to restore the original behavior
# to prevent many specs from failing:
# https://github.com/bblimke/webmock/blob/master/README.md#connecting-on-nethttpstart
webmock_enable!
end
config.before(:example, :js) do
session = Capybara.current_session
allow(Gitlab::Application.routes).to receive(:default_url_options).and_return(
host: session.server.host,
port: session.server.port,
protocol: 'http')
# reset window size between tests
unless session.current_window.size == CAPYBARA_WINDOW_SIZE
begin
session.current_window.resize_to(*CAPYBARA_WINDOW_SIZE)
rescue # ?
end
end
end
# The :capybara_ignore_server_errors metadata means unhandled exceptions raised
# by the application under test will not necessarily fail the server. This is
# useful when testing conditions that are expected to raise a 500 error in
# production; it should not be used on the happy path.
config.around(:each, :capybara_ignore_server_errors) do |example|
Capybara.raise_server_errors = false
example.run
if example.metadata[:screenshot]
screenshot = example.metadata[:screenshot][:image] || example.metadata[:screenshot][:html]
example.metadata[:stdout] = %{[[ATTACHMENT|#{screenshot}]]}
end
ensure
Capybara.raise_server_errors = true
end
config.after(:example, :js) do |example|
# when a test fails, display any messages in the browser's console
# but fail don't add the message if the failure is a pending test that got
# fixed. If we raised the `JSException` the fixed test would be marked as
# failed again.
if example.exception && !example.exception.is_a?(RSpec::Core::Pending::PendingExampleFixedError)
console = page.driver.browser.manage.logs.get(:browser)&.reject { |log| log.message =~ JS_CONSOLE_FILTER }
if console.present?
message = "Unexpected browser console output:\n" + console.map(&:message).join("\n")
raise JSConsoleError, message
end
end
# prevent localStorage from introducing side effects based on test order
unless ['', 'about:blank', 'data:,'].include? Capybara.current_session.driver.browser.current_url
execute_script("localStorage.clear();")
end
# capybara/rspec already calls Capybara.reset_sessions! in an `after` hook,
# but `block_and_wait_for_requests_complete` is called before it so by
# calling it explicitly here, we prevent any new requests from being fired
# See https://github.com/teamcapybara/capybara/blob/ffb41cfad620de1961bb49b1562a9fa9b28c0903/lib/capybara/rspec.rb#L20-L25
# We don't reset the session when the example failed, because we need capybara-screenshot to have access to it.
Capybara.reset_sessions! unless example.exception
block_and_wait_for_requests_complete
end
end
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