Class: TestQueue::Iterator

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/test_queue/iterator.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(test_framework, sock, filter = nil, run_token:, early_failure_limit: nil) ⇒ Iterator

Returns a new instance of Iterator.



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# File 'lib/test_queue/iterator.rb', line 9

def initialize(test_framework, sock, filter = nil, run_token:, early_failure_limit: nil)
  @test_framework = test_framework
  @done = false
  @suite_stats = []
  @sock = sock
  @filter = filter
  if @sock =~ /\A(.+):(\d+)\z/
    @tcp_address = $1
    @tcp_port = $2.to_i
  end
  @failures = 0
  @early_failure_limit = early_failure_limit
  @run_token = run_token
end

Instance Attribute Details

#sock ⇒ Object (readonly)

Returns the value of attribute sock.



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# File 'lib/test_queue/iterator.rb', line 7

def sock
  @sock
end

Instance Method Details

#connect_to_master(cmd) ⇒ Object 



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# File 'lib/test_queue/iterator.rb', line 84

def connect_to_master(cmd)
  sock =
    if @tcp_address
      TCPSocket.new(@tcp_address, @tcp_port)
    else
      UNIXSocket.new(@sock)
    end
  sock.puts("TOKEN=#{@run_token}")
  sock.puts(cmd)
  sock
rescue Errno::EPIPE
  nil
end

#each ⇒ Object 



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# File 'lib/test_queue/iterator.rb', line 24

def each
  raise "already used this iterator. previous caller: #{@done}" if @done

  procline = $0

  loop do
    # If we've hit too many failures in one worker, assume the entire
    # test suite is broken, and notify master so the run
    # can be immediately halted.
    if @early_failure_limit && @failures >= @early_failure_limit
      connect_to_master('KABOOM')
      break
    else
      client = connect_to_master("POP #{Socket.gethostname} #{Process.pid}")
    end
    break if client.nil?

    # This false positive will be resolved by https://github.com/rubocop/rubocop/pull/11830.
    _r, _w, e = IO.select([client], nil, [client], nil)
    break unless e.empty?

    if (data = client.read(65536))
      client.close
      item = Marshal.load(data)
      break if item.nil? || item.empty?

      if item == 'WAIT'
        $0 = "#{procline} - Waiting for work"
        sleep 0.1
        next
      end
      suite_name, path = item
      suite = load_suite(suite_name, path)

      # Maybe we were told to load a suite that doesn't exist anymore.
      next unless suite

      $0 = "#{procline} - #{suite.respond_to?(:description) ? suite.description : suite}"
      start = Time.now
      if @filter
        @filter.call(suite) { yield suite }
      else
        yield suite
      end
      @suite_stats << TestQueue::Stats::Suite.new(suite_name, path, Time.now - start, Time.now)
      @failures += suite.failure_count if suite.respond_to? :failure_count
    else
      break
    end
  end
rescue Errno::ENOENT, Errno::ECONNRESET, Errno::ECONNREFUSED
  # noop
ensure
  $0 = procline
  @done = caller(1..1).first
  File.open("/tmp/test_queue_worker_#{$$}_suites", 'wb') do |f|
    Marshal.dump(@suite_stats, f)
  end
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/test_queue/iterator.rb', line 98

def empty?
  false
end

#load_suite(suite_name, path) ⇒ Object 



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# File 'lib/test_queue/iterator.rb', line 102

def load_suite(suite_name, path)
  @loaded_suites ||= {}
  suite = @loaded_suites[suite_name]
  return suite if suite

  @test_framework.suites_from_file(path).each do |name, suite_from_file|
    @loaded_suites[name] = suite_from_file
  end
  @loaded_suites[suite_name]
end