Class: Multitest

Inherits:
Object
  • Object
show all
Defined in:
lib/multitest/multitest.rb

Overview

The ability to test multiple files across multiple cores simultaneously

Defined Under Namespace

Modules: Tasks

Constant Summary collapse

@@cores = 
2

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(files, cores = Multitest.cores) ⇒ Multitest

Takes an options hash.

:files => files to test
:cores => number of cores to use



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# File 'lib/multitest/multitest.rb', line 19

def initialize(files, cores = Multitest.cores)
  @files = files
  @cores = cores
  @children = []
  @threads = []
  @pipes = []
  
  Test::Unit.run = true
  @files.each{|f| load f}
end

Class Method Details

.cores ⇒ Object 



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# File 'lib/multitest/multitest.rb', line 10

def self.cores
  @@cores
end

.cores=(c) ⇒ Object 



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# File 'lib/multitest/multitest.rb', line 13

def self.cores=(c)
  @@cores = c
end

.find_classes_in_file(f) ⇒ Object 



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# File 'lib/multitest/multitest.rb', line 108

def self.find_classes_in_file(f)
  code = ""
  File.open(f) {|buffer| code = buffer.read}
  matches = code.scan(/class\s+([\S]+)/)
  klasses = matches.collect do |c|
    begin
      if c.first.respond_to? :constantize
        c.first.constantize
      else
        eval(c.first)
      end
    rescue NameError
      # $stderr.write "Could not load [#{c.first}] from [#{f}]\n"
      nil
    rescue SyntaxError
      # $stderr.write "Could not load [#{c.first}] from [#{f}]\n"
      nil
    end
  end
  return klasses.select{|k| k.respond_to? 'suite'}
end

Instance Method Details

#run ⇒ Object

Run the tests that have been setup



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# File 'lib/multitest/multitest.rb', line 31

def run
  return if @files.empty?
  $stderr.write @files.inspect+"\n"; $stderr.flush
  @cores.times do |c|
    @pipes << PipeDream.new
    @children << SafeFork.fork do
      Signal.trap("TERM") { exit }
      Signal.trap("HUP") { exit }
      pipe = @pipes.last
      pipe.identify_as_child
      pipe.write("[Worker #{c}] Booted\n")
      @result = Test::Unit::TestResult.new
      @result.add_listener(Test::Unit::TestResult::FAULT) do |value|
        $stderr.write value
        $stderr.write "\n\n"
        $stderr.flush
      end
      while !pipe.eof?
        file = pipe.gets.chomp
        begin
          pipe.write "[Worker #{c} Starting: #{file}\n"
          start = Time.now

          klasses = Multitest.find_classes_in_file(file)
          klasses.each{|k| k.suite.run(@result){|status, name| ;}}
          
          finish = Time.now
          pipe.write "[Worker #{c}] Completed: #{file} (#{finish-start})\n"
        rescue => ex
          pipe.write "[Worker #{c}] Failed: #{file} - #{ex.to_s}\n"
        end
      end
      $stderr.write @result.to_s
      $stderr.write "\n"
      $stderr.flush
      pipe.close
    end
  end

  total_files = @files.size
  @threads = []
  @pipes.each do |_p|
    @threads << Thread.new(_p) do |p|
      Signal.trap("TERM") { exit }
      p.identify_as_parent
      # boot message
      p.gets
      while !@files.empty? 
        # puts "#{total_files - @files.size}/#{total_files}"
        # send a file
        p.write("#{@files.pop}\n")
        # print the start message
        msg = p.gets
        # $stdout.write msg; $stdout.flush
        # wait for the complete message
        msg = p.gets
        # print complete message
        if msg =~ /Completed/
          # $stdout.write msg; $stdout.flush
        else
          $stderr.write msg; $stderr.flush
        end
      end
      p.close
    end
  end

  Signal.trap("TERM") do
    puts "Exiting"
    @children.each{|c| Process.kill("TERM",c)}
    @threads.each{|t| Thread.kill(t)}
  end

  @threads.each{|t| t.join}
  @children.each{|c| Process.wait(c)}
end