require 'rbconfig' require 'minitest/parallel_each' module ActiveSupport module Testing class RemoteError < StandardError attr_reader :message, :backtrace def initialize(exception) @message = "caught #{exception.class.name}: #{exception.message}" @backtrace = exception.backtrace end end class ProxyTestResult def initialize(calls = []) @calls = calls end def add_error(e) e = Test::Unit::Error.new(e.test_name, RemoteError.new(e.exception)) @calls << [:add_error, e] end def __replay__(result) @calls.each do |name, args| result.send(name, *args) end end def marshal_dump @calls end def marshal_load(calls) initialize(calls) end def method_missing(name, *args) @calls << [name, args] end end module Isolation require 'thread' def self.included(klass) #:nodoc: klass.extend(Module.new { def test_methods ParallelEach.new super end }) end def self.forking_env? !ENV["NO_FORK"] && ((RbConfig::CONFIG['host_os'] !~ /mswin|mingw/) && (RUBY_PLATFORM !~ /java/)) end @@class_setup_mutex = Mutex.new def _run_class_setup # class setup method should only happen in parent @@class_setup_mutex.synchronize do unless defined?(@@ran_class_setup) || ENV['ISOLATION_TEST'] self.class.setup if self.class.respond_to?(:setup) @@ran_class_setup = true end end end def run(runner) _run_class_setup serialized = run_in_isolation do |isolated_runner| super(isolated_runner) end retval, proxy = Marshal.load(serialized) proxy.__replay__(runner) retval end module Forking def run_in_isolation(&blk) read, write = IO.pipe pid = fork do read.close proxy = ProxyTestResult.new retval = yield proxy write.puts [Marshal.dump([retval, proxy])].pack("m") exit! end write.close result = read.read Process.wait2(pid) return result.unpack("m")[0] end end module Subprocess ORIG_ARGV = ARGV.dup unless defined?(ORIG_ARGV) # Crazy H4X to get this working in windows / jruby with # no forking. def run_in_isolation(&blk) require "tempfile" if ENV["ISOLATION_TEST"] proxy = ProxyTestResult.new retval = yield proxy File.open(ENV["ISOLATION_OUTPUT"], "w") do |file| file.puts [Marshal.dump([retval, proxy])].pack("m") end exit! else Tempfile.open("isolation") do |tmpfile| ENV["ISOLATION_TEST"] = @method_name ENV["ISOLATION_OUTPUT"] = tmpfile.path load_paths = $-I.map {|p| "-I\"#{File.expand_path(p)}\"" }.join(" ") `#{Gem.ruby} #{load_paths} #{$0} #{ORIG_ARGV.join(" ")} -t\"#{self.class}\"` ENV.delete("ISOLATION_TEST") ENV.delete("ISOLATION_OUTPUT") return tmpfile.read.unpack("m")[0] end end end end include forking_env? ? Forking : Subprocess end end end