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Continuous Integration, parallel_tests, cucumber, headless, capybara-webkit, chrome. For mac and linux.Conditionally @show chrome browser (:selenium) in development if @show tag is used, otherwise run headless and *always* run headless in a CI environment regardless of the tag's presence. Check javascript errors automatically when using webkit.
# verified against log_in.feature for blake
# https://github.com/jnicklas/capybara/issues/1443
# turn on webkit driver debug
$use_webkit = true
$use_chrome_instead_of_firefox = false
$webkit_debug = false
$wait_time = 5
def webkit_driver
if $webkit_debug
return :webkit_debug
else
return :webkit
end
end
def webkit?
[:webkit, :webkit_debug].include? Capybara.current_driver
end
def selenium?
Capybara.javascript_driver == :selenium
end
if $use_chrome_instead_of_firefox
# Register chrome browser for the :selenium driver, can be triggered below with the combination of @javascript @show
Capybara.register_driver :selenium do |app|
Capybara::Selenium::Driver.new(app, :browser => :chrome)
end
end
# try to get a unique port, important for parallels tests
# if ENV['TEST_ENV_NUMBER']
test_env_number = ENV['TEST_ENV_NUMBER']
test_env_number ||= 1
test_port = 9887 + test_env_number.to_i
#test_port += 1 while is_port_open?(@port) and not is_running_on_port?(@port)
puts "Capybara::Server.port: #{test_port} for test process: #{test_env_number}"
Capybara.server_port = test_port
# end
if $headless_server.nil?
# Unnecessary on mac, see https://github.com/leonid-shevtsov/headless/issues/31#issuecomment-8933108
if !OS.mac?
require 'headless'
# allow display autopick (by default)
# allow each headless to destroy_at_exit (by default)
# allow each process to have their own headless by setting reuse: false
# $headless_server = Headless.new(reuse: false)
$headless_server = Headless.new(reuse: true, destroy_at_exit: false)
$headless_server.start
puts "Process[#{Process.pid}] started headless server display: #{$headless_server.display}"
end
end
at_exit do
unless $headless_server.nil?
puts "Process[#{Process.pid}] destroying headless server on display: #{$headless_server.display}"
$headless_server.destroy
end
end
# first time around, we need this set.
if $use_webkit
Capybara.default_driver = webkit_driver
# Capybara.current_driver = webkit_driver
# Capybara.javascript_driver = webkit_driver
end
#
# If the @show tag is present on a non-mac environment, ignore it,
# otherwise allow the combination of @javascript @show to trigger the
# :selenium driver (which is :chrome browser as configured above)
#
Before do |scenario|
if $use_webkit
Capybara.current_driver = webkit_driver
Capybara.javascript_driver = webkit_driver
end
# problem on @show with backgrounds: https://github.com/cucumber/cucumber/issues/52
if should_show(scenario)
# for some reason, just using the `using_driver` doesn't get us all the way there, so set/reset the `javascript_driver` as necessary.
Capybara.current_driver = :selenium
Capybara.javascript_driver = :selenium # needed for @show with chrome, as it doesn't seem to explicitly set the javascript driver
end
# puts "Using #{Capybara.current_driver}/#{Capybara.javascript_driver}/#{Capybara.default_driver}"
end
After do |scenario|
# problem on @show with backgrounds: https://github.com/cucumber/cucumber/issues/52
# puts "Done #{Capybara.current_driver}/#{Capybara.javascript_driver}/#{Capybara.default_driver}"
Capybara.use_default_driver
end
def should_show(scenario)
OS.mac? && (has_tag(scenario, '@show') || has_tag(scenario, '@leave_browser_open') || has_tag(scenario, '@single_step'))
end
def has_tag(scenario, tag)
(scenario.source_tags.map do |tag|
tag.name
end).include? tag
end
# Increase wait time for ajax retries
Capybara.default_wait_time = $wait_time
Before do |scenario|
@scenario = scenario
# reset to wait time in case something in the scenario upped it as it was long running
Capybara.default_wait_time = $wait_time
end
# webkit javascript check only
AfterStep do
if webkit?
begin
#puts "All Javascript errors: #{page.driver.error_messages}"
# puts "All console messages: #{page.driver.console_messages}"
real_error_messages = page.driver.error_messages
#real_error_messages = []
#page.driver.error_messages.each_with_index do |e, i|
# # first two messages appear to be bogus, always.
# if (e[:line_number] == 0) && (e[:source].eql? 'undefined') && (e[:message].eql? 'TypeError: \'null\' is not an object') && i <= 1
# # discard message
# else
# real_error_messages << e
# end
#end
if real_error_messages.length > 0
unless real_error_messages.first[:source].include?('https://a.stripecdn.com/manage/assets/application.manage')
raise "Javascript errors: #{real_error_messages}"
end
end
rescue
puts "Failed to check javascript error messages."
end
end
end
After do |scenario|
if (scenario.failed?)
print_console_messages scenario
end
end
def print_console_messages(scenario)
return unless webkit?
begin
messages = page.driver.console_messages
if messages.presence && messages.size > 0
print "\n--------------------------------------------------------------------------------------------------------------------------------------------"
print "\nConsole: #{scenario_unique_name(scenario)}: "
print "\n---------------------------------------------------------------------------\n"
messages.each do |console_message|
print "\n"
print console_message[:message]
end
print "\n--------------------------------------------------------------------------------------------------------------------------------------------"
else
print "\n--------------------------------------------------------------------------------------------------------------------------------------------"
print "\nNo Console messages for: #{scenario_unique_name(scenario)}: "
print "\n--------------------------------------------------------------------------------------------------------------------------------------------"
end
$stdout.flush
rescue
puts "Failed to write console messages."
end
end
@rosskevin
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rosskevin commented Jul 10, 2013

Note that this code as affected by cucumber/common#52

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