add pid_fg to test_pid_file

test/pid_fg

@@ -2,5 +2,5 @@
 #-*- ruby -*-
 #. hashdot.pid_file         = ${hashdot.script}.pid
 
-puts "Exiting abruptly..."
+puts "Exiting abruptly with status code 1"
 exit(1)

test/test_pid_file

@@ -2,15 +2,23 @@
 #-*- ruby -*-
 #. hashdot.pid_file = ${hashdot.script}.pid
 
-tdir = File.dirname( __FILE__ )
+TDIR = File.dirname( __FILE__ )
 
-efile  = File.join( tdir, "pid_daemon.err" )
-daemon = File.join( tdir, "pid_daemon" )
-pfile  = File.join( tdir, "pid_daemon.pid" )
-lfile  = File.join( tdir, "pid_daemon.log" )
+def tfile( name )
+  File.join( TDIR, name )
+end
+
+def rm( file )
+  File.unlink( file ) if File.exist?( file )
+end
 
-File.unlink( efile ) if File.exist?( efile )
-File.unlink( lfile ) if File.exist?( lfile )
+efile  = tfile( "pid_daemon.err" )
+daemon = tfile( "pid_daemon" )
+pfile  = tfile( "pid_daemon.pid" )
+lfile  = tfile( "pid_daemon.log" )
+
+rm( efile )
+rm( lfile )
 
 40.times do
   system( daemon ) or raise $?
@@ -32,4 +40,21 @@ end
 
 if File.exist?( pfile )
   puts( "ERROR: #{pfile} exists" )
+  exit 1
+else
+  puts( "PASS: pid_daemon" )
+end
+
+fg_pfile = tfile( "pid_fg.pid" )
+rm( fg_pfile )
+if system( tfile( "pid_fg" ) )
+  puts( "ERROR: pid_fg returned success." )
+  exit 2
+end
+
+if File.exist?( fg_pfile )
+  puts( "ERROR: #{fg_pfile} exists" )
+  exit 2
+else
+  puts( "PASS: pid_fg" )
 end