test_integration_single.rb

require_relative "helper"
require_relative "helpers/integration"

class TestIntegrationSingle < TestIntegration
  parallelize_me! if ::Puma.mri?

  def workers ; 0 ; end

  def test_hot_restart_does_not_drop_connections_threads
    hot_restart_does_not_drop_connections num_threads: 5, total_requests: 1_000
  end

  def test_hot_restart_does_not_drop_connections
    hot_restart_does_not_drop_connections
  end

  def test_usr2_restart
    skip_unless_signal_exist? :USR2
    _, new_reply = restart_server_and_listen("-q test/rackup/hello.ru")
    assert_equal "Hello World", new_reply
  end

  # It does not share environments between multiple generations, which would break Dotenv
  def test_usr2_restart_restores_environment
    # jruby has a bug where setting `nil` into the ENV or `delete` do not change the
    # next workers ENV
    skip_if :jruby
    skip_unless_signal_exist? :USR2

    initial_reply, new_reply = restart_server_and_listen("-q test/rackup/hello-env.ru")

    assert_includes initial_reply, "Hello RAND"
    assert_includes new_reply, "Hello RAND"
    refute_equal initial_reply, new_reply
  end

  def test_term_exit_code
    skip_unless_signal_exist? :TERM
    skip_if :jruby # JVM does not return correct exit code for TERM

    cli_server "test/rackup/hello.ru"
    _, status = stop_server

    assert_equal 15, status
  end

  def test_term_suppress
    skip_unless_signal_exist? :TERM

    cli_server "-C test/config/suppress_exception.rb test/rackup/hello.ru"
    _, status = stop_server

    assert_equal 0, status
  end

  def test_prefer_rackup_file_specified_by_cli
    skip_unless_signal_exist? :TERM

    cli_server "-C test/config/with_rackup_from_dsl.rb test/rackup/hello.ru"
    reply = read_body(connect)
    stop_server

    assert_match("Hello World", reply)
  end

  def test_term_not_accepts_new_connections
    skip_unless_signal_exist? :TERM
    skip_if :jruby

    cli_server 'test/rackup/sleep.ru'

    _stdin, curl_stdout, _stderr, curl_wait_thread = Open3.popen3({ 'LC_ALL' => 'C' }, "curl http://#{HOST}:#{@tcp_port}/sleep10")
    sleep 1 # ensure curl send a request

    Process.kill :TERM, @pid
    true while @server.gets !~ /Gracefully stopping/ # wait for server to begin graceful shutdown

    # Invoke a request which must be rejected
    _stdin, _stdout, rejected_curl_stderr, rejected_curl_wait_thread = Open3.popen3("curl #{HOST}:#{@tcp_port}")

    assert nil != Process.getpgid(@server.pid) # ensure server is still running
    assert nil != Process.getpgid(curl_wait_thread[:pid]) # ensure first curl invocation still in progress

    curl_wait_thread.join
    rejected_curl_wait_thread.join

    assert_match(/Slept 10/, curl_stdout.read)
    assert_match(/Connection refused/, rejected_curl_stderr.read)

    Process.wait(@server.pid)
    @server.close unless @server.closed?
    @server = nil # prevent `#teardown` from killing already killed server
  end

  def test_int_refuse
    skip_unless_signal_exist? :INT
    skip_if :jruby  # seems to intermittently lockup JRuby CI

    cli_server 'test/rackup/hello.ru'
    begin
      sock = TCPSocket.new(HOST, @tcp_port)
      sock.close
    rescue => ex
      fail("Port didn't open properly: #{ex.message}")
    end

    Process.kill :INT, @pid
    Process.wait @pid

    assert_raises(Errno::ECONNREFUSED) { TCPSocket.new(HOST, @tcp_port) }
  end

  def test_siginfo_thread_print
    skip_unless_signal_exist? :INFO

    cli_server 'test/rackup/hello.ru'
    output = []
    t = Thread.new { output << @server.readlines }
    Process.kill :INFO, @pid
    Process.kill :INT , @pid
    t.join

    assert_match "Thread: TID", output.join
  end

  def test_write_to_log
    skip_unless_signal_exist? :TERM

    suppress_output = '> /dev/null 2>&1'

    cli_server '-C test/config/t1_conf.rb test/rackup/hello.ru'

    system "curl http://localhost:#{@tcp_port}/ #{suppress_output}"

    stop_server

    log = File.read('t1-stdout')

    File.unlink 't1-stdout' if File.file? 't1-stdout'
    File.unlink 't1-pid' if File.file? 't1-pid'

    assert_match(%r!GET / HTTP/1\.1!, log)
  end

  def test_puma_started_log_writing
    skip_unless_signal_exist? :TERM

    suppress_output = '> /dev/null 2>&1'

    cli_server '-C test/config/t2_conf.rb test/rackup/hello.ru'

    system "curl http://localhost:#{@tcp_port}/ #{suppress_output}"

    out=`#{BASE} bin/pumactl -F test/config/t2_conf.rb status`

    stop_server

    log = File.read('t2-stdout')

    File.unlink 't2-stdout' if File.file? 't2-stdout'

    assert_match(%r!GET / HTTP/1\.1!, log)
    assert(!File.file?("t2-pid"))
    assert_equal("Puma is started\n", out)
  end

  def test_application_logs_are_flushed_on_write
    @control_tcp_port = UniquePort.call
    cli_server "--control-url tcp://#{HOST}:#{@control_tcp_port} --control-token #{TOKEN} test/rackup/write_to_stdout.ru"

    read_body connect

    cli_pumactl 'stop'

    assert_equal "hello\n", @server.gets
    assert_includes @server.read, 'Goodbye!'

    @server.close unless @server.closed?
    @server = nil
  end

  # listener is closed 'externally' while Puma is in the IO.select statement
  def test_closed_listener
    skip_unless_signal_exist? :TERM
    skip_if :darwin # been flaky with Ruby 2.2, 2.3, 2.4

    cli_server "test/rackup/close_listeners.ru", merge_err: true
    read_body connect

    begin
      Timeout.timeout(5) do
        begin
          Process.kill :SIGTERM, @pid
        rescue Errno::ESRCH
        end
        begin
          Process.wait2 @pid
        rescue Errno::ECHILD
        end
      end
    rescue Timeout::Error
      Process.kill :SIGKILL, @pid
      assert false, "Process froze"
    end
    assert true
  end
end