File: ppid_spec.rb

package info (click to toggle)
jruby 1.7.26-1%2Bdeb9u1
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 84,572 kB
  • sloc: ruby: 669,910; java: 253,056; xml: 35,152; ansic: 9,187; yacc: 7,267; cpp: 5,244; sh: 1,036; makefile: 345; jsp: 48; tcl: 40
file content (23 lines) | stat: -rw-r--r-- 480 bytes parent folder | download | duplicates (3) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
 
require File.expand_path('../../../spec_helper', __FILE__)

describe "Process.ppid" do
  with_feature :fork do
    it "returns the process id of the parent of this process" do

      read, write = IO.pipe

      child_pid = Process.fork {
        read.close
        write << "#{Process.ppid}\n"
        write.close
        exit!
      }

      write.close
      pid = read.gets
      read.close
      Process.wait(child_pid)
      pid.to_i.should == Process.pid
    end
  end
end