File indexing completed on 2023-10-03 08:45:10

 #!/usr/bin/env ruby
 # frozen_string_literal: true
 
 # SPDX-License-Identifier: AGPL-3.0-or-later
 # SPDX-FileCopyrightText: 2022-2023 Harald Sitter <sitter@kde.org>
 
 require 'fileutils'
 require 'logger'
 require 'shellwords'
 require 'tmpdir'
 
 def at_bus_exists?
   IO.popen(['dbus-send', '--print-reply=literal', '--dest=org.freedesktop.DBus', '/org/freedesktop/DBus', 'org.freedesktop.DBus.ListNames'], 'r') do |io|
     io.read.include?('org.a11y.Bus')
   end
 end
 
 def at_bus_address
   IO.popen(['dbus-send', '--print-reply=literal', '--dest=org.a11y.Bus', '/org/a11y/bus', 'org.a11y.Bus.GetAddress'], 'r') do |io|
     io.read.strip
   end
 end
 
 def terminate_pgids(pgids)
   (pgids || []).reverse.each do |pgid|
     Process.kill('-TERM', pgid)
     Process.waitpid(pgid)
   rescue Errno::ECHILD => e
     warn "Process group not found #{e}"
   end
 end
 
 def terminate_pids(pids)
   (pids || []).reverse.each do |pid|
     Process.kill('TERM', pid)
     Process.waitpid(pid)
   end
 end
 
 class ATSPIBus
   def initialize(logger:)
     @logger = logger
   end
 
   def with(&block)
     return block.yield if at_bus_exists?
 
     bus_existed = at_bus_exists?
 
     launcher_path = find_program('at-spi-bus-launcher')
     registry_path = find_program('at-spi2-registryd')
     @logger.warn "Testing with #{launcher_path} and #{registry_path}"
 
     pids = []
     pids << spawn(launcher_path, '--launch-immediately')
     pids << spawn(registry_path)
     block.yield
   ensure
     # NB: do not signal KILL the launcher, it only shutsdown the a11y dbus-daemon when terminated!
     terminate_pids(pids)
     # Restart the regular bus or the user may be left with malfunctioning accerciser
     # (intentionally ignoring the return value! it never passes in the CI & freebsd in absence of systemd)
     system('systemctl', 'restart', '--user', 'at-spi-dbus-bus.service') if !pids&.empty? && bus_existed
   end
 
   private
 
   def find_program(name)
     @atspi_paths ||= [
       '/usr/lib/at-spi2-core/', # debians
       '/usr/libexec/', # newer debians
       '/usr/lib/at-spi2/', # suses
       '/usr/libexec/at-spi2/', # newer suses
       '/usr/lib/' # arch
     ]
 
     @atspi_paths.each do |x|
       path = "#{x}/#{name}"
       return path if File.exist?(path)
     end
     raise "Could not resolve absolute path for #{name}; searched in #{@atspi_paths.join(', ')}"
   end
 end
 
 def kwin_reexec!
   # KWin redirection is a bit tricky. We want to run this script itself under kwin so both the flask server and
   # the actual test script can inherit environment variables from that nested kwin. Most notably this is required
   # to have the correct DISPLAY set to access the xwayland instance.
   # As such this function has two behavior modes. If kwin redirection should run (that is: it's not yet inside kwin)
   # it will fork and exec into kwin. If redirection is not required it yields out.
 
   return if ENV.include?('KWIN_PID') # already inside a kwin parent
   return if ENV['TEST_WITH_KWIN_WAYLAND'] == '0'
 
   kwin_pid = fork do |pid|
     ENV['QT_QPA_PLATFORM'] = 'wayland'
     ENV['KWIN_SCREENSHOT_NO_PERMISSION_CHECKS'] = '1'
     ENV['KWIN_WAYLAND_NO_PERMISSION_CHECKS'] = '1'
     ENV['KWIN_PID'] = pid.to_s
     extra_args = []
     extra_args << '--virtual' if ENV['LIBGL_ALWAYS_SOFTWARE']
     extra_args << '--xwayland' if ENV.fetch('TEST_WITH_XWAYLAND', '0').to_i.positive?
     # A bit awkward because of how argument parsing works on the kwin side: we must rely on shell word merging for
     # the __FILE__ ARGV bit, separate ARGVs to kwin_wayland would be distinct subprocesses to start but we want
     # one processes with a bunch of arguments.
     exec('kwin_wayland', '--no-lockscreen', '--no-global-shortcuts', *extra_args,
          '--exit-with-session', "#{__FILE__} #{ARGV.shelljoin}")
   end
   _pid, status = Process.waitpid2(kwin_pid)
   status.success? ? exit : abort
 end
 
 def dbus_reexec!(logger:)
   return if ENV.include?('CUSTOM_BUS') # already inside a nested bus
 
   if ENV.fetch('USE_CUSTOM_BUS', '0').to_i.zero? && # not explicitly enabled
      at_bus_exists? # already have an a11y bus, use it
 
     logger.info('using existing dbus session')
     return
   end
 
   logger.info('starting dbus session')
   ENV['CUSTOM_BUS'] = '1'
   # Using spawn() rather than exec() so we can print useful debug information after the run
   # (useful to debug problems with shutdown of started processes)
   pid = spawn('dbus-run-session', '--', __FILE__, *ARGV, pgroup: true)
   pgid = Process.getpgid(pid)
   _pid, status = Process.waitpid2(pid)
   terminate_pgids([pgid])
   logger.info('dbus session ended')
   system('ps fja')
   status.success? ? exit : abort
 end
 
 # Video recording wrapper
 class Recorder
   def self.with(&block)
     return block.yield unless ENV['RECORD_VIDEO_NAME']
 
     abort 'RECORD_VIDEO requires that a nested kwin wayland be used! (TEST_WITH_KWIN_WAYLAND)' unless ENV['KWIN_PID']
 
     # Make sure kwin is up. This can be removed once the code was changed to re-exec as part of a kwin
     # subprocess, then the wayland server is ready by the time we get re-executed.
     sleep(5)
     FileUtils.rm_f(ENV['RECORD_VIDEO_NAME'])
     pids = []
     pids << spawn('pipewire')
     pids << spawn('wireplumber')
     pids << spawn(find_program('xdg-desktop-portal-kde'))
     pids << spawn('selenium-webdriver-at-spi-recorder', '--output', ENV.fetch('RECORD_VIDEO_NAME'))
     5.times do
       break if File.exist?(ENV['RECORD_VIDEO_NAME'])
 
       sleep(1)
     end
     block.yield
   ensure
     terminate_pids(pids)
     if ENV['RECORD_VIDEO_NAME'] &&
        (!File.exist?(ENV['RECORD_VIDEO_NAME']) || File.size(ENV['RECORD_VIDEO_NAME']) < 256_000)
       warn "recording apparently didn't work properly"
     end
   end
 
   def self.find_program(name)
     @paths ||= ENV.fetch('LD_LIBRARY_PATH', '').split(':').map { |x| "#{x}/libexec" } +
                [
                  '/usr/lib/*/libexec/', # debian
                  '/usr/libexec/', # suse
                  '/usr/lib/' # arch
                ]
 
     @paths.each do |x|
       path = "#{x}/#{name}"
       return path if Dir.glob(path)&.first
     end
     raise "Could not resolve absolute path for #{name}; searched in #{@paths.join(', ')}"
   end
 end
 
 class Driver
   def self.with(datadir, &block)
     pids = []
     env = { 'FLASK_ENV' => 'production', 'FLASK_APP' => 'selenium-webdriver-at-spi.py' }
     env['GDK_BACKEND'] = 'wayland' if ENV['KWIN_PID']
     pids << spawn(env,
                   'flask', 'run', '--port', PORT, '--no-reload',
                   chdir: datadir)
     block.yield
   ensure
     terminate_pids(pids)
   end
 end
 
 PORT = '4723'
 $stdout.sync = true # force immediate flushing without internal caching
 logger = Logger.new($stdout)
 
 # Tweak the CIs logging rules. They are way too verbose for our purposes
 if ENV['KDECI_BUILD'] == 'TRUE'
   ENV['QT_LOGGING_RULES'] = <<-RULES.gsub(/\s/, '')
     default=true;*.debug=true;kf.globalaccel.kglobalacceld=false;kf.wayland.client=false;
     qt.scenegraph.*=false;qt.qml.diskcache=false;
     qt.qml.*=false;qt.qpa.wayland.*=false;qt.quick.dirty=false;qt.accessibility.cache=false;qt.v4.asm=false;
     qt.opengl.diskcache=false;qt.qpa.fonts=false;kf.kio.workers.http=false;
     qt.quick.*=false;qt.text.*=false;qt.qpa.input.methods=false;
     qt.qpa.backingstore=false;qt.gui.*=false;qt.core.plugin.loader=false;
   RULES
   ENV['QT_LOGGING_RULES'] = ENV['QT_LOGGING_RULES_OVERRIDE'] if ENV.include?('QT_LOGGING_RULES_OVERRIDE')
 end
 
 logger.info 'Installing dependencies'
 datadir = File.absolute_path("#{__dir__}/../share/selenium-webdriver-at-spi/")
 requirements_installed_marker = "#{Dir.tmpdir}/selenium-requirements-installed"
 if !File.exist?(requirements_installed_marker) && File.exist?("#{datadir}/requirements.txt")
   raise 'pip3 not found in PATH!' unless system('which', 'pip3')
   unless system('pip3', 'install', '-r', 'requirements.txt', chdir: datadir)
     unless system('pip3', 'install', '--break-system-packages', '-r', 'requirements.txt', chdir: datadir)
       raise 'Failed to run pip3 install!'
     end
   end
 
   if ENV['KDECI_BUILD'] == 'TRUE'
     File.open(requirements_installed_marker, "w") do |file|
       # create an empty file so tests in the same CI container can skip the process
     end
   end
 end
 
 ENV['PATH'] = "#{Dir.home}/.local/bin:#{ENV.fetch('PATH')}"
 
 ret = false
 
 # create a throw-away XDG home, so the test starts with a clean slate
 # with every run, and doesn't mess with your local installation
 Dir.mktmpdir('selenium') do |xdg_home|
   %w[CACHE CONFIG DATA STATE].each do |d|
     Dir.mkdir("#{xdg_home}/#{d}")
     ENV["XDG_#{d}_HOME"] = "#{xdg_home}/#{d}"
   end
 
   dbus_reexec!(logger: logger)
   kwin_reexec!
   if ENV['KDECI_BUILD'] == 'TRUE'
     raise 'Failed to set dbus env' unless system('dbus-update-activation-environment', '--all')
   end
 
   ATSPIBus.new(logger: logger).with do
     # Prevent a race condition in Qt when it tries to figure out the bus address,
     # instead just tell it the address explicitly.
     # https://codereview.qt-project.org/c/qt/qtbase/+/493700/2
     ENV['AT_SPI_BUS_ADDRESS'] = at_bus_address
     Recorder.with do
       Driver.with(datadir) do
         i = 0
         begin
           require 'net/http'
           Net::HTTP.get(URI("http://localhost:#{PORT}/status"))
         rescue => e
           i += 1
           if i < 30
             logger.info 'not up yet'
             sleep 0.5
             retry
           end
           raise e
         end
 
         logger.info "starting test #{ARGV}"
         IO.popen(ARGV, 'r', &:readlines)
         ret = $?.success?
         logger.info 'tests done'
       end
     end
   end
 end
 
 logger.info "run.rb exiting #{ret}"
 ret ? exit : abort