require_relative '../../spec_helper'

describe "Process.wait2" do
  before :all do
    # HACK: this kludge is temporarily necessary because some
    # misbehaving spec somewhere else does not clear processes
    begin
      Process.wait(-1, Process::WNOHANG)
      $stderr.puts "Leaked process before wait2 specs! Waiting for it"
      leaked = Process.waitall
      $stderr.puts "leaked before wait2 specs: #{leaked}"
    rescue Errno::ECHILD # No child processes
    rescue NotImplementedError
    end
  end

  without_feature :mjit do # [Bug #14867]
    platform_is_not :windows do
      it "returns the pid and status of child process" do
        pidf = Process.fork { Process.exit! 99 }
        results = Process.wait2
        results.size.should == 2
        pidw, status = results
        pidf.should == pidw
        status.exitstatus.should == 99
      end
    end

    it "raises a StandardError if no child processes exist" do
      lambda { Process.wait2 }.should raise_error(Errno::ECHILD)
      lambda { Process.wait2 }.should raise_error(StandardError)
    end
  end
end