Check session ID values
Check session ID values

Not only its class name, should check if it equals to the value by
Process.getsid and does not equal to the parent process.

sgarciac/spec,sgarciac/spec,eregon/rubyspec,eregon/rubyspec,sgarciac/spec,wied03/rubyspec,wied03/rubyspec,wied03/rubyspec,ruby/rubyspec,ruby/spec,kachick/rubyspec,ruby/spec,nobu/rubyspec,ruby/spec,eregon/rubyspec,nobu/rubyspec,kachick/rubyspec,nobu/rubyspec,ruby/rubyspec,kachick/rubyspec