ruby--ruby/spec/ruby/core/process/waitall_spec.rb

require_relative '../../spec_helper'

describe "Process.waitall" do
  before :all do
    begin
      Process.waitall
    rescue NotImplementedError
    end
  end

  without_feature :mjit do # [Bug #14867]
    it "returns an empty array when there are no children" do
      Process.waitall.should == []
    end

    it "takes no arguments" do
      lambda { Process.waitall(0) }.should raise_error(ArgumentError)
    end

    platform_is_not :windows do
      it "waits for all children" do
        pids = []
        pids << Process.fork { Process.exit! 2 }
        pids << Process.fork { Process.exit! 1 }
        pids << Process.fork { Process.exit! 0 }
        Process.waitall
        pids.each { |pid|
          lambda { Process.kill(0, pid) }.should raise_error(Errno::ESRCH)
        }
      end

      it "returns an array of pid/status pairs" do
        pids = []
        pids << Process.fork { Process.exit! 2 }
        pids << Process.fork { Process.exit! 1 }
        pids << Process.fork { Process.exit! 0 }
        a = Process.waitall
        a.should be_kind_of(Array)
        a.size.should == 3
        pids.each { |pid|
          pid_status = a.assoc(pid)
          pid_status.should be_kind_of(Array)
          pid_status.size.should == 2
          pid_status.first.should == pid
          pid_status.last.should be_kind_of(Process::Status)
        }
      end
    end
  end
end