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Linux 2.6 - man page for net::daemon::test (linux section 3pm)

Net::Daemon::Test(3pm)	       User Contributed Perl Documentation	   Net::Daemon::Test(3pm)

       Net::Daemon::Test - support functions for testing Net::Daemon servers

	   # This is the server, stored in the file "servertask".
	   # Create a subclass of Net::Daemon::Test, which in turn is
	   # a subclass of Net::Daemon
	   use Net::Daemon::Test ();
	   package MyDaemon;
	   @MyDaemon::ISA = qw(Net::Daemon::Test);

	   sub Run {
	       # Overwrite this and other methods, as you like.

	   my $self = Net::Daemon->new(\%attr, \@options);
	   eval { $self->Bind() };
	   if ($@) {
	       die "Server cannot bind: $!";
	   eval { $self->Run() };
	   if ($@) {
	       die "Unexpected server termination: $@";

	   # This is the client, the real test script, note we call the
	   # "servertask" file below:
	   # Call the Child method to spawn a child. Don't forget to use
	   # the timeout option.
	   use Net::Daemon::Test ();

	   my($handle, $port) = eval {
	       Net::Daemon::Test->Child(5, # Number of subtests
					'servertask', '--timeout', '20')
	   if ($@) {
	       print "not ok 1 $@\n";
	       exit 0;
	   print "ok 1\n";

	   # Real tests following here

	   # Terminate the server

       This module is a frame for creating test scripts of Net::Daemon based server packages,
       preferrably using Test::Harness, but that's your choice.

       A test consists of two parts: The client part and the server part.  The test is executed
       by the child part which invokes the server part, by spawning a child process and invoking
       an external Perl script.  (Of course we woultn't need this external file with fork(), but
       that's the best possibility to make the test scripts portable to Windows without requiring
       threads in the test script.)

       The server part is a usual Net::Daemon application, for example a script like dbiproxy.
       The only difference is that it derives from Net::Daemon::Test and not from Net::Daemon,
       the main difference is that the Bind method attempts to allocate a port automatically.
       Once a port is allocated, the number is stored in the file "ndtest.prt".

       After spawning the server process, the child will wait ten seconds (hopefully sufficient)
       for the creation of ndtest.prt.

   Server part
       Options Adds an option --timeout to Net::Daemon: The server's Run method will die after at
	       most 20 seconds.

       Bind    (Instance method) This is mainly the default Bind method, but it attempts to find
	       and allocate a free port in two ways: First of all, it tries to call Bind with
	       port 0, most systems will automatically choose a port in that case. If that seems
	       to fail, ports 30000-30049 are tried. We hope, one of these will succeed. :-)

       Run     (Instance method) Overwrites the Net::Daemon's method by adding a timeout.

       sub Run ($) {
	   my $self = shift;
	   $self->Run(); }

   Client part
       Child   (Class method) Attempts to spawn a server process. The server process is expected
	       to create the file 'ndtest.prt' with the port number.

	       The method returns a process handle and a port number. The process handle offers a
	       method Terminate that may later be used to stop the server process.

	 Net::Daemon is Copyright (C) 1998, Jochen Wiedmann
					    Am Eisteich 9
					    72555 Metzingen

					    Phone: +49 7123 14887
					    Email: joe@ispsoft.de

	 All rights reserved.

       You may distribute under the terms of either the GNU General Public License or the
       Artistic License, as specified in the Perl README file.

       Net::Daemon(3), Test::Harness(3)

perl v5.12.3				    2011-03-01			   Net::Daemon::Test(3pm)

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