[1185704] New Testing Infrastructure.

Complete rewrite of the original testing infrastructure and
all test cases (to use the new infrastructure)
See NPTest.pm and issue 1185704 for more details.


git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1207 f882894a-f735-0410-b71e-b25c423dba1c

26 files changed, 1060 insertions, 574 deletions

diff --git a/Helper.pm b/Helper.pm
deleted file mode 100644
index 198a6480..00000000
--- a/Helper.pm
+++ /dev/null
@@ -1,44 +0,0 @@
-package Helper;
-use strict;
-
-use Exporter();
-use vars qw($VERSION @ISA @EXPORT);
-$VERSION = 0.01;
-@ISA=qw(Exporter);
-@EXPORT=qw(&get_option);
-
-sub get_option ($$) {
-    my $file = 'Cache';
-    my $response;
-    my $var = shift;
-
-    require "$file.pm";
-    if(defined($Cache::{$var})){
-			$response=$Cache::{$var};
-			return $$response;
-		}
-
-		my $request = shift;
-		my $filename;
-		my $path;
-		foreach $path (@INC) {
-			$filename="$path/$file.pm";
-			last if (-e $filename);
-		}
-		print STDERR "Enter $request\n";
-		$response=<STDIN>;
-		chop($response);
-		open(CACHE,"<$filename") or die "Cannot open cache for reading";
-		undef $/;
-		my $cache = <CACHE>;
-		$/="\n";
-		close CACHE;
-		$cache =~ s/^(\@EXPORT\s*=\s*qw\(\s*[^\)]*)\)\s*;/$1 $var\)\;/msg;
-		$cache =~ s/^1;[\n\s]*\Z/\$$var=\"$response\"\;\n1\;\n/msg;
-		open(CACHE,">$filename") or die "Cannot open cache for writing";
-		print CACHE $cache;
-		close CACHE;
-		return $response;
-}
-
-1;
diff --git a/Makefile.am b/Makefile.am
index ca570e37..a7c5ffc6 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -5,7 +5,7 @@ SUBDIRS = intl lib plugins plugins-scripts m4 po
 EXTRA_DIST = config.rpath \
 	ABOUT-NLS ACKNOWLEDGEMENTS AUTHORS BUGS CHANGES CODING FAQ LEGAL \
 	REQUIREMENTS SUPPORT THANKS \
-	Helper.pm contrib pkg nagios-plugins.spec
+	NPTest.pm contrib pkg nagios-plugins.spec
 
 ACLOCAL_AMFLAGS = -I m4
 
diff --git a/NPTest.pm b/NPTest.pm
new file mode 100644
index 00000000..f3c874b8
--- /dev/null
+++ b/NPTest.pm
@@ -0,0 +1,554 @@
+package NPTest;
+
+#
+# Helper Functions for testing Nagios Plugins
+#
+
+require Exporter;
+@ISA       = qw(Exporter);
+@EXPORT    = qw(getTestParameter checkCmd skipMissingCmd);
+@EXPORT_OK = qw(DetermineTestHarnessDirectory TestsFrom SetCacheFilename);
+
+use strict;
+use warnings;
+
+use Cwd;
+use File::Basename;
+
+use IO::File;
+use Data::Dumper;
+
+use Test;
+
+use vars qw($VERSION);
+$VERSION = do { my @r = (q$Revision$ =~ /\d+/g); sprintf "%d."."%02d" x $#r, @r }; # must be all one line, for MakeMaker
+
+=head1 NAME
+
+NPTest - Simplify the testing of Nagios Plugins
+
+=head1 DESCRIPTION
+
+This modules provides convenience functions to assist in the testing
+of Nagios Plugins, making the testing code easier to read and write;
+hopefully encouraging the development of more complete test suite for
+the Nagios Plugins. It is based on the patterns of testing seen in the
+1.4.0 release, and continues to use the L<Test> module as the basis of
+testing.
+
+=head1 FUNCTIONS
+
+This module defines three public functions, C<getTestParameter(...)>,
+C<checkCmd(...)> and C<skipMissingCmd(...)>.  These are exported by
+default via the C<use NPTest;> statement.
+
+=over
+
+=item C<getTestParameter(...)>
+
+A flexible and user override-able method of collecting, storing and
+retrieving test parameters. This function allows the test harness
+developer to interactively request test parameter information from the
+user, when the no means of obtaining the information automatically has
+been successful. The user is provided with the option of accepting
+test harness developer's default value for the parameter, if a suggested
+default is provided.
+
+User supplied responses are stored in an external (file-based)
+cache. These values are retrieved on subsequent runs alleviating the
+user of reconfirming the previous entered responses. The user is able
+to override the value of a parameter on any given run by setting the
+associated environment variable. These environment variable based
+overrides are not stored in the cache, allowing one-time and what-if
+based tests on the command line without polluting the cache.
+
+The option exists to store parameters in a scoped means, allowing a
+test harness to a localise a parameter should the need arise. This
+allows a parameter of the same name to exist in a test harness
+specific scope, while not affecting the globally scoped parameter. The
+scoping identifier is the name of the test harness sans the trailing
+".t".  All cache searches first look to a scoped parameter before
+looking for the parameter at global scope. Thus for a test harness
+called "check_disk.t" requesting the parameter "mountpoint_valid", the
+cache is first searched for "check_disk"/"mountpoint_valid", if this
+fails, then a search is conducted for "mountpoint_valid".
+
+The facilitate quick testing setup, it is possible to accept all the
+developer provided defaults by setting the environment variable
+"NPTEST_ACCEPTDEFAULT" to "1" (or any other perl truth value). Note
+that, such defaults are not stored in the cache, as there is currently
+no mechanism to edit existing cache entries, save the use of text
+editor or removing the cache file completely.
+
+=item C<checkCmd(...)>
+
+This function attempts to encompass the majority of test styles used
+in testing Nagios Plugins. As each plug-in is a separate command, the
+typical tests we wish to perform are against the exit status of the
+command and the output (if any) it generated. Simplifying these tests
+into a single function call, makes the test harness easier to read and
+maintain and allows additional functionality (such as debugging) to be
+provided withoutadditional effort on the part of the test harness
+developer.
+
+It is possible to enable debugging via the environment variable
+C<NPTEST_DEBUG>. If this environment variable exists and its value in PERL's
+boolean context evaluates to true, debugging is enabled.
+
+The function prototype can be expressed as follows:
+
+  Parameter 1 : command => DEFINED SCALAR(string)
+  Parameter 2 : desiredExitStatus => ONE OF
+                  SCALAR(integer)
+                  ARRAYREF(integer)
+                  HASHREF(integer,string)
+                  UNDEFINED
+  Parameter 3 : desiredOutput => SCALAR(string) OR UNDEFINED
+  Parameter 4 : exceptions => HASH(integer,string) OR UNDEFINED
+  Returns     : SCALAR(integer) as defined by Test::ok(...)
+
+The function treats the first parameter C<$command> as a command line
+to execute as part of the test, it is executed only once and its exit
+status (C<$?E<gt>E<gt>8>) and output are captured.
+
+At this point if debugging is enabled the command, its exit status and
+output are displayed to the tester.
+
+C<checkCmd(...)> allows the testing of either the exit status or the
+generated output or both, not testing either will result in neither
+the C<Test::ok(...)> or C<Test::skip(...)> functions being called,
+something you probably don't want. Note that each defined test
+(C<$desiredExitStatus> and C<$desiredOutput>) results in a invocation
+of either C<Test::ok(...)> or C<Test::skip(...)>, so remember this
+when counting the number of tests to place in the C<Test::plan(...)>
+call.
+
+Many Nagios Plugins test network services, some of which may not be
+present on all systems. To cater for this, C<checkCmd(...)> allows the
+tester to define exceptions based on the command's exit status. These
+exceptions are provided to skip tests if the test case developer
+believes the service is not being provided. For example, if a site
+does not have a POP3 server, the test harness could map the
+appropriate exit status to a useful message the person running the
+tests, telling the reason the test is being skipped.
+
+Example:
+
+my %exceptions = ( 2 =E<gt> "No POP Server present?" );
+
+$t += checkCmd( "./check_pop I<some args>", 0, undef, %exceptions );
+
+Thus, in the above example, an exit status of 2 does not result in a
+failed test case (as the exit status is not the desired value of 0),
+but a skipped test case with the message "No POP Server present?"
+given as the reason.
+
+Sometimes the exit status of a command should be tested against a set
+of possible values, rather than a single value, this could especially
+be the case in failure testing. C<checkCmd(...)> support two methods
+of testing against a set of desired exit status values.
+
+=over
+
+=item *
+
+Firstly, if C<$desiredExitStatus> is a reference to an array of exit
+stati, if the actual exit status of the command is present in the
+array, it is used in the call to C<Test::ok(...)> when testing the
+exit status.
+
+=item *
+
+Alternatively, if C<$desiredExitStatus> is a reference to a hash of
+exit stati (mapped to the strings "continue" or "skip"), similar
+processing to the above occurs with the side affect of determining if
+any generated output testing should proceed. Note: only the string
+"skip" will result in generated output testing being skipped.
+
+=back
+
+=item C<skipMissingCmd(...)>
+
+If a command is missing and the test harness must C<Test::skip()> some
+or all of the tests in a given test harness this function provides a
+simple iterator to issue an appropriate message the requested number
+of times.
+
+=back
+
+=head1 SEE ALSO
+
+L<Test>
+
+The rest of the code, as I have only commented on the major public
+functions that test harness writers will use, not all the code present
+in this helper module.
+
+=head1 AUTHOR
+
+Copyright (c) 2005 Peter Bray.  All rights reserved.
+
+This package is free software and is provided "as is" without express
+or implied warranty.  It may be used, redistributed and/or modified
+under the same terms as the Nagios Plugins release.
+
+=cut
+
+#
+# Package Scope Variables
+#
+
+my( %CACHE ) = ();
+
+# I'm not really sure wether to house a site-specific cache inside
+# or outside of the extracted source / build tree - lets default to outside
+my( $CACHEFILENAME ) = ( exists( $ENV{'NPTESTCACHE'} ) && $ENV{'NPTESTCACHE'} )
+                       ? $ENV{'NPTESTCACHE'} : "/var/tmp/NPTest.cache"; # "../Cache.pdd";
+
+#
+# Testing Functions
+#
+
+sub checkCmd
+{
+  my( $command, $desiredExitStatus, $desiredOutput, %exceptions ) = @_;
+
+  my $output     = `${command}`;
+  my $exitStatus = $? >> 8;
+
+  $output = "" unless defined( $output );
+  chomp( $output );
+
+  if ( exists( $ENV{'NPTEST_DEBUG'} ) && $ENV{'NPTEST_DEBUG'} )
+  {
+    my( $pkg, $file, $line ) = caller(0);
+
+    print "checkCmd: Called from line $line in $file\n";
+    print "Testing : ${command}\n";
+    print "Result  : ${exitStatus} AND '${output}'\n";
+  }
+
+  my $testStatus;
+
+  my $testOutput = "continue";
+
+  if ( defined( $desiredExitStatus ) )
+  {
+    if ( ref $desiredExitStatus eq "ARRAY" )
+    {
+      if ( scalar( grep { $_ == $exitStatus } @{$desiredExitStatus} ) )
+      {
+	$desiredExitStatus = $exitStatus;
+      }
+      else
+      {
+	$desiredExitStatus = -1;
+      }
+    }
+    elsif ( ref $desiredExitStatus eq "HASH" )
+    {
+      if ( exists( ${$desiredExitStatus}{$exitStatus} ) )
+      {
+	if ( defined( ${$desiredExitStatus}{$exitStatus} ) )
+	{
+	  $testOutput = ${$desiredExitStatus}{$exitStatus};
+	}
+	$desiredExitStatus = $exitStatus;
+      }
+      else
+      {
+	$desiredExitStatus = -1;
+      }
+    }
+
+    if ( %exceptions && exists( $exceptions{$exitStatus} ) )
+    {
+      $testStatus += skip( $exceptions{$exitStatus}, $exitStatus, $desiredExitStatus );
+    }
+    else
+    {
+      $testStatus += ok( $exitStatus, $desiredExitStatus );
+    }
+  }
+
+  if ( defined( $desiredOutput ) )
+  {
+    if ( $testOutput ne "skip" )
+    {
+      $testStatus += ok( $output, $desiredOutput );
+    }
+    else
+    {
+      $testStatus += skip( "Skipping output test as requested", $output, $desiredOutput );
+    }
+  }
+
+  return $testStatus;
+}
+
+
+sub skipMissingCmd
+{
+  my( $command, $count ) = @_;
+
+  my $testStatus;
+
+  for ( 1 .. $count )
+  {
+    $testStatus += skip( "Missing ${command} - tests skipped", 1 );
+  }
+
+  return $testStatus;
+}
+
+sub getTestParameter
+{
+  my( $param, $envvar, $default, $brief, $scoped ) = @_;
+
+  # Apply default values for optional arguments
+  $scoped = ( defined( $scoped ) && $scoped );
+
+  my $testharness = basename( (caller(0))[1], ".t" ); # used for scoping
+
+  if ( defined( $envvar ) &&  exists( $ENV{$envvar} ) && $ENV{$envvar} )
+  {
+    return $ENV{$envvar}
+  }
+
+  my $cachedValue = SearchCache( $param, $testharness );
+  if ( defined( $cachedValue ) && $cachedValue )
+  {
+    return $cachedValue;
+  }
+
+  my $defaultValid      = ( defined( $default ) && $default );
+  my $autoAcceptDefault = ( exists( $ENV{'NPTEST_ACCEPTDEFAULT'} ) && $ENV{'NPTEST_ACCEPTDEFAULT'} );
+
+  if ( $autoAcceptDefault && $defaultValid )
+  {
+    return $default;
+  }
+
+  my $userResponse = "";
+
+  while ( $userResponse eq "" )
+  {
+    print STDERR "\n";
+    print STDERR "Test Harness         : $testharness\n";
+    print STDERR "Test Parameter       : $param\n";
+    print STDERR "Environment Variable : $envvar\n";
+    print STDERR "Brief Description    : $brief\n";
+    print STDERR "Enter value ", ($defaultValid ? "[${default}]" : "[]"), " => ";
+    $userResponse = <STDIN>;
+    $userResponse = "" if ! defined( $userResponse ); # Handle EOF
+    chomp( $userResponse );
+    if ( $defaultValid && $userResponse eq "" )
+    {
+      $userResponse = $default;
+    }
+  }
+
+  print STDERR "\n";
+
+  # define all user responses at global scope
+  SetCacheParameter( $param, ( $scoped ? $testharness : undef ), $userResponse );
+
+  return $userResponse;
+}
+
+#
+# Internal Cache Management Functions
+#
+
+sub SearchCache
+{
+  my( $param, $scope ) = @_;
+
+  LoadCache();
+
+  if ( exists( $CACHE{$scope} ) && exists( $CACHE{$scope}{$param} ) )
+  {
+    return $CACHE{$scope}{$param};
+  }
+
+  if ( exists( $CACHE{$param} ) )
+  {
+    return $CACHE{$param};
+  }
+}
+
+sub SetCacheParameter
+{
+  my( $param, $scope, $value ) = @_;
+
+  if ( defined( $scope ) )
+  {
+    $CACHE{$scope}{$param} = $value;
+  }
+  else
+  {
+    $CACHE{$param} = $value;
+  }
+
+  SaveCache();
+}
+
+sub LoadCache
+{
+  return if exists( $CACHE{'_cache_loaded_'} );
+
+  if ( -f $CACHEFILENAME )
+  {
+    my( $fileHandle ) = new IO::File;
+
+    if ( ! $fileHandle->open( "< ${CACHEFILENAME}" ) )
+    {
+      print STDERR "NPTest::LoadCache() : Problem opening ${CACHEFILENAME} : $!\n";
+      return;
+    }
+
+    my( $fileContents ) = join( "\n", <$fileHandle> );
+
+    $fileHandle->close();
+
+    my( $contentsRef ) = eval $fileContents;
+    %CACHE = %{$contentsRef};
+
+  }
+
+  $CACHE{'_cache_loaded_'} = 1;
+}
+
+
+sub SaveCache
+{
+  delete $CACHE{'_cache_loaded_'};
+
+  my( $fileHandle ) = new IO::File;
+
+  if ( ! $fileHandle->open( "> ${CACHEFILENAME}" ) )
+  {
+    print STDERR "NPTest::LoadCache() : Problem saving ${CACHEFILENAME} : $!\n";
+    return;
+  }
+
+  my( $dataDumper ) = new Data::Dumper( [ \%CACHE ] );
+
+  $dataDumper->Terse(1);
+
+  print $fileHandle $dataDumper->Dump();
+
+  $fileHandle->close();
+
+  $CACHE{'_cache_loaded_'} = 1;
+}
+
+#
+# (Questionable) Public Cache Management Functions
+#
+
+sub SetCacheFilename
+{
+  my( $filename ) = @_;
+
+  # Unfortunately we can not validate the filename
+  # in any meaningful way, as it may not yet exist
+  $CACHEFILENAME = $filename;
+}
+
+
+#
+# Test Harness Wrapper Functions
+#
+
+sub DetermineTestHarnessDirectory
+{
+  my( $userSupplied ) = @_;
+
+  # User Supplied
+  if ( defined( $userSupplied ) && $userSupplied )
+  {
+    if ( -d $userSupplied )
+    {
+      return $userSupplied;
+    }
+    else
+    {
+      return undef; # userSupplied is invalid -> FAIL
+    }
+  }
+
+  # Simple Case : "t" is a subdirectory of the current directory
+  if ( -d "./t" )
+  {
+    return "./t";
+  }
+
+  # To be honest I don't understand which case satisfies the
+  # original code in test.pl : when $tstdir == `pwd` w.r.t.
+  # $tstdir =~ s|^(.*)/([^/]+)/?$|$1/$2|; and if (-d "../../$2/t")
+  # Assuming pwd is "/a/b/c/d/e" then we are testing for "/a/b/c/e/t"
+  # if I understand the code correctly (a big assumption)
+
+  # Simple Case : the current directory is "t"
+  my $pwd = cwd();
+
+  if ( $pwd =~ m|/t$| )
+  {
+    return $pwd;
+
+    # The alternate that might work better is
+    # chdir( ".." );
+    # return "./t";
+    # As the current test harnesses assume the application
+    # to be tested is in the current directory (ie "./check_disk ....")
+  }
+
+  return undef;
+}
+
+sub TestsFrom
+{
+  my( $directory, $excludeIfAppMissing ) = @_;
+
+  $excludeIfAppMissing = 0 unless defined( $excludeIfAppMissing );
+
+  if ( ! opendir( DIR, $directory ) )
+  {
+    print STDERR "NPTest::TestsFrom() - Failed to open ${directory} : $!\n";
+    return ();
+  }
+
+  my( @tests ) = ();
+
+  my $filename;
+  my $application;
+
+  while ( $filename = readdir( DIR ) )
+  {
+    if ( $filename =~ m/\.t$/ )
+    {
+      if ( $excludeIfAppMissing )
+      {
+	$application = basename( $filename, ".t" );
+	if ( ! -e $application )
+	{
+	  print STDERR "No application (${application}) found for test harness (${filename})\n";
+	  next;
+	}
+      }
+      push @tests, "${directory}/${filename}";
+    }
+  }
+
+  closedir( DIR );
+
+  return @tests;
+}
+
+
+
+1;
+#
+# End of File
+#
diff --git a/configure.in b/configure.in
index a7f7b0ef..f80be768 100644
--- a/configure.in
+++ b/configure.in
@@ -2,7 +2,7 @@ dnl Process this file with autoconf to produce a configure script.
 AC_REVISION ($Revision$)
 AC_PREREQ(2.58)
 AC_INIT(nagios-plugins,1.5)
-AC_CONFIG_SRCDIR(Helper.pm)
+AC_CONFIG_SRCDIR(NPTest.pm)
 AM_INIT_AUTOMAKE
 AM_CONFIG_HEADER(config.h)
 AC_CANONICAL_HOST
diff --git a/plugins-scripts/t/check_rpc.t b/plugins-scripts/t/check_rpc.t
index afcb867c..9fff0ee9 100644
--- a/plugins-scripts/t/check_rpc.t
+++ b/plugins-scripts/t/check_rpc.t
@@ -1,19 +1,22 @@
+#! /usr/bin/perl -w -I ..
+#
+# Remote Procedure Call (RPC) Tests via check_rpc
+#
+# $Id$
+#
+
 use strict;
 use Test;
-use vars qw($tests);
+use NPTest;
 
+use vars qw($tests);
 BEGIN {$tests = 2; plan tests => $tests}
 
-my $null = '';
-my $cmd;
-my $str;
-my $t=0;
+my $successOutput = '/^check_rpc/';
+
+my $t;
 
-$cmd = "./check_rpc -V";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
-$t += ok $str, '/^check_rpc/';
+$t += checkCmd( "./check_rpc -V",   0, $successOutput );
 
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
diff --git a/plugins/t/check_disk.t b/plugins/t/check_disk.t
index f1e436dc..f2427fbe 100644
--- a/plugins/t/check_disk.t
+++ b/plugins/t/check_disk.t
@@ -1,31 +1,33 @@
+#! /usr/bin/perl -w -I ..
+#
+# Disk Space Tests via check_disk
+#
+# $Id$
+#
+
 use strict;
 use Test;
+use NPTest;
+
 use vars qw($tests);
+BEGIN {$tests = 10; plan tests => $tests}
+
+my $successOutput = '/^DISK OK - /';
+my $failureOutput = '/^DISK CRITICAL - /';
+
+my $mountpoint_valid   = getTestParameter( "mountpoint_valid",   "NP_MOUNTPOINT_VALID",   "/",
+					   "The path to a valid mountpoint" );
 
-BEGIN {$tests = 6; plan tests => $tests}
+my $mountpoint_invalid = getTestParameter( "mountpoint_invalid", "NP_MOUNTPOINT_INVALID", "/missing",
+					   "The path to a invalid (non-existent) mountpoint" );
 
-my $null = '';
-my $cmd;
-my $str;
 my $t;
 
-$cmd = "./check_disk 100 100 /";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
-$t += ok $str, '/^(Disk ok - +[\.0-9]+|DISK OK - )/';
-
-$cmd = "./check_disk -w 0 -c 0 /";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
-$t += ok $str, '/^(Disk ok - +[\.0-9]+|DISK OK - )/';
-
-$cmd = "./check_disk 0 0 /";
-$str = `$cmd`;
-$t += ok $?>>8,2;
-print "Test was: $cmd\n" unless ($?);
-$t += ok $str, '/^(Only +[\.0-9]+|DISK CRITICAL - )/';
+$t += checkCmd( "./check_disk 100 100       ${mountpoint_valid}",   0, $successOutput );
+$t += checkCmd( "./check_disk -w 0 -c 0     ${mountpoint_valid}",   0, $successOutput );
+$t += checkCmd( "./check_disk -w 1\% -c 1\% ${mountpoint_valid}",   0, $successOutput );
+$t += checkCmd( "./check_disk 0 0           ${mountpoint_valid}",   2, $failureOutput );
+$t += checkCmd( "./check_disk 100 100       ${mountpoint_invalid}", 2, '/not found/'  );
 
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
diff --git a/plugins/t/check_dns.t b/plugins/t/check_dns.t
index bee1d34b..fbaca794 100644
--- a/plugins/t/check_dns.t
+++ b/plugins/t/check_dns.t
@@ -1,28 +1,42 @@
-#! /usr/bin/perl -w
+#! /usr/bin/perl -w -I ..
+#
+# Domain Name Server (DNS) Tests via check_dns
+#
+# $Id$
+#
 
 use strict;
-use Cache;
 use Test;
+use NPTest;
+
 use vars qw($tests);
+BEGIN {$tests = 6; plan tests => $tests}
+
+my $successOutput = '/DNS OK: [\.0-9]+ seconds response time/';
 
-BEGIN {$tests = 3; plan tests => $tests}
+my $hostname_valid   = getTestParameter( "hostname_valid",   "NP_HOSTNAME_VALID",   "localhost",
+					 "A valid (known to DNS) hostname" );
 
-#`nslookup localhost > /dev/null 2>&1` || exit(77);
+my $hostname_invalid = getTestParameter( "hostname_invalid", "NP_HOSTNAME_INVALID", "nosuchhost",
+					 "An invalid (not known to DNS) hostname" );
+
+my $dns_server       = getTestParameter( "dns_server",       "NP_DNS_SERVER",       undef,
+					 "A non default (remote) DNS server" );
 
-my $null = '';
-my $cmd;
-my $str;
 my $t;
 
-$str = `./check_dns $Cache::dnshost -to 5`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
-$t += ok $str, '/DNS OK: +[\.0-9]+ seconds response time, /';
+#
+# Default DNS Server
+#
+$t += checkCmd( "./check_dns -H $hostname_valid   -t 5", 0, $successOutput );
+$t += checkCmd( "./check_dns -H $hostname_invalid -t 1", 2 );
 
-$cmd = "./check_dns $Cache::nullhost -to 1";
-$str = `$cmd`;
-$t += ok $?>>8,2;
-print "Test was: $cmd\n" unless ($?);
+#
+# Specified DNS Server
+#
+$t += checkCmd( "./check_dns -H $hostname_valid   -s $dns_server -t 5", 0, $successOutput );
+$t += checkCmd( "./check_dns -H $hostname_invalid -s $dns_server -t 1", 2 );
 
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
+
diff --git a/plugins/t/check_fping.t b/plugins/t/check_fping.t
index 629ee35f..c59d59e0 100644
--- a/plugins/t/check_fping.t
+++ b/plugins/t/check_fping.t
@@ -1,37 +1,43 @@
-#! /usr/bin/perl -w
+#! /usr/bin/perl -w -I ..
+#
+# FPing Tests via check_fping
+#
 # $Id$
+#
 
 use strict;
-use Cache;
 use Test;
+use NPTest;
+
 use vars qw($tests);
 
-BEGIN {$tests = 3; plan tests => $tests}
+BEGIN {$tests = 4; plan tests => $tests}
 
-exit(0) unless (-x "./check_fping");
+my $successOutput = '/^FPING OK - /';
+my $failureOutput = '/^FPING CRITICAL - /';
 
-#`fping 127.0.0.1 > /dev/null 2>&1` || exit(77);
+my $host_responsive    = getTestParameter( "host_responsive",    "NP_HOST_RESPONSIVE",    "localhost",
+					   "The hostname of system responsive to network requests" );
 
-my $null = '';
-my $cmd;
-my $str;
-my $t;
-my $stat;
+my $host_nonresponsive = getTestParameter( "host_nonresponsive", "NP_HOST_NONRESPONSIVE", "10.0.0.1",
+					   "The hostname of system not responsive to network requests" );
 
+my $hostname_invalid   = getTestParameter( "hostname_invalid",   "NP_HOSTNAME_INVALID",   "nosuchhost",
+                                           "An invalid (not known to DNS) hostname" );
 
-$cmd = "./check_fping 127.0.0.1";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
-$t += ok $str, '/^FPING OK - 127.0.0.1/';
 
-$cmd = "./check_fping $Cache::nullhost";
-$str = `$cmd`;
-if ($?>>8 == 1 or $?>>8 == 2) {
-	$stat = 2;
+my $t;
+
+if ( -x "./check_fping" )
+{
+  $t += checkCmd( "./check_fping $host_responsive",    0,       $successOutput );
+  $t += checkCmd( "./check_fping $host_nonresponsive", [ 1, 2 ] );
+  $t += checkCmd( "./check_fping $hostname_invalid",   [ 1, 2 ] );
+}
+else
+{
+  $t += skipMissingCmd( "./check_fping", $tests );
 }
-$t += ok $stat,2;
-print "Test was: $cmd\n" if (($?>>8) < 1);
 
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
diff --git a/plugins/t/check_ftp.t b/plugins/t/check_ftp.t
index d9e9d9ca..47a73e13 100644
--- a/plugins/t/check_ftp.t
+++ b/plugins/t/check_ftp.t
@@ -1,32 +1,34 @@
-#! /usr/bin/perl -w
+#! /usr/bin/perl -w -I ..
+#
+# File Transfer Protocol (FTP) Test via check_ftp
+#
+# $Id$
+#
 
-#use strict;
-use Cache;
+use strict;
 use Test;
+use NPTest;
+
 use vars qw($tests);
+BEGIN {$tests = 4; plan tests => $tests}
 
-BEGIN {$tests = 3; plan tests => $tests}
+my $host_tcp_ftp       = getTestParameter( "host_tcp_ftp",       "NP_HOST_TCP_FTP",       "localhost",
+					   "A host providing the FTP Service (an FTP server)");
 
-my $null = '';
-my $cmd;
-my $str;
-my $t;
+my $host_nonresponsive = getTestParameter( "host_nonresponsive", "NP_HOST_NONRESPONSIVE", "10.0.0.1",
+					   "The hostname of system not responsive to network requests" );
 
-$cmd = "./check_ftp $Cache::hostname -wt 300 -ct 600";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
-$t += ok $str, '/FTP OK -\s+[0-9]?\.?[0-9]+ second response time/';
+my $hostname_invalid   = getTestParameter( "hostname_invalid",   "NP_HOSTNAME_INVALID",   "nosuchhost",
+                                           "An invalid (not known to DNS) hostname" );
 
-#$cmd = "./check_ftp $Cache::noserver -wt 0 -ct 0";
-#$str = `$cmd`;
-#$t += ok $?>>8,2;
-#print "Test was: $cmd\n" unless ($?);
+my $successOutput = '/FTP OK -\s+[0-9]?\.?[0-9]+ second response time/';
 
-$cmd = "./check_ftp $Cache::nullhost -wt 0 -ct 0 -to 1";
-$str = `$cmd`;
-$t += ok $?>>8,2;
-print "Test was: $cmd\n" unless ($?);
+my $t;
+
+$t += checkCmd( "./check_ftp $host_tcp_ftp       -wt 300 -ct 600",       0, $successOutput );
+$t += checkCmd( "./check_ftp $host_nonresponsive -wt 0   -ct 0   -to 1", 2 );
+$t += checkCmd( "./check_ftp $hostname_invalid   -wt 0   -ct 0",         2 );
 
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
+
diff --git a/plugins/t/check_hpjd.t b/plugins/t/check_hpjd.t
index b4e198d2..b749c778 100644
--- a/plugins/t/check_hpjd.t
+++ b/plugins/t/check_hpjd.t
@@ -1,32 +1,42 @@
-#! /usr/bin/perl -w
+#! /usr/bin/perl -w -I ..
+#
+# HP JetDirect Test via check_hpjd
+#
+# $Id$
+#
 
 use strict;
-use Helper;
-use Cache;
 use Test;
+use NPTest;
+
 use vars qw($tests);
+BEGIN {$tests = 5; plan tests => $tests}
 
-BEGIN {$tests = 4; plan tests => $tests}
+my $successOutput = '/^Printer ok - /';
+my $failureOutput = '/Timeout: No [Rr]esponse from /';
 
-exit(0) unless (-x "./check_hpjd");
+my $host_tcp_hpjd      = getTestParameter( "host_tcp_hpjd",      "NP_HOST_TCP_HPJD",      undef,
+					   "A host (usually a printer) providing the HP-JetDirect Services" );
 
-my $null = '';
-my $cmd;
-my $str;
-my $t;
-my $printer = get_option("hpjd_printer","HP Jet-Direct card address");
+my $host_nonresponsive = getTestParameter( "host_nonresponsive", "NP_HOST_NONRESPONSIVE", "10.0.0.1",
+					   "The hostname of system not responsive to network requests" );
 
-$cmd = "./check_hpjd $printer";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
-$t += ok $str, '/^Printer ok - /';
+my $hostname_invalid   = getTestParameter( "hostname_invalid",   "NP_HOSTNAME_INVALID",   "nosuchhost",
+                                           "An invalid (not known to DNS) hostname" );
 
-$cmd = "./check_hpjd $Cache::noserver";
-$str = `$cmd`;
-$t += ok $?>>8,2;
-print "Test was: $cmd\n" unless ($?);
-$t += ok $str, '/Timeout: No response from /';
+my $t;
+
+if ( -x "./check_hpjd" )
+{
+  $t += checkCmd( "./check_hpjd $host_tcp_hpjd",      0, $successOutput );
+  $t += checkCmd( "./check_hpjd $host_nonresponsive", 2, $failureOutput );
+  $t += checkCmd( "./check_hpjd $hostname_invalid",   3 );
+}
+else
+{
+  $t += skipMissingCmd( "./check_hpjd", $tests );
+}
 
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
+
diff --git a/plugins/t/check_http.t b/plugins/t/check_http.t
index 5be549ad..56d939b3 100644
--- a/plugins/t/check_http.t
+++ b/plugins/t/check_http.t
@@ -1,22 +1,36 @@
-#! /usr/bin/perl -w
+#! /usr/bin/perl -w -I ..
+#
+# HyperText Transfer Protocol (HTTP) Test via check_http
+#
+# $Id$
+#
 
 use strict;
-use Cache;
 use Test;
+use NPTest;
+
 use vars qw($tests);
+BEGIN {$tests = 4; plan tests => $tests}
 
-BEGIN {$tests = 3; plan tests => $tests}
+my $host_tcp_http      = getTestParameter( "host_tcp_http",      "NP_HOST_TCP_HTTP",      "localhost",
+					   "A host providing the HTTP Service (a web server)" );
 
-my $null = '';
-my $str;
-my $t;
+my $host_nonresponsive = getTestParameter( "host_nonresponsive", "NP_HOST_NONRESPONSIVE", "10.0.0.1",
+					   "The hostname of system not responsive to network requests" );
 
-$str = `./check_http $Cache::httphost -wt 300 -ct 600`;
-$t += ok $?>>8,0;
-$t += ok $str, '/(HTTP\s[o|O][k|K]\s)?\s?HTTP\/1.[01]\s[0-9]{3}\s(OK|Found)\s-\s+[0-9]+\sbytes\sin\s+([0-9]+|[0-9]+\.[0-9]+)\sseconds/';
+my $hostname_invalid   = getTestParameter( "hostname_invalid",   "NP_HOSTNAME_INVALID",   "nosuchhost",
+                                           "An invalid (not known to DNS) hostname" );
 
-$str = `./check_http $Cache::nullhost -wt 1 -ct 2`;
-$t += ok $?>>8,2;
+my $successOutput = '/(HTTP\s[o|O][k|K]\s)?\s?HTTP\/1.[01]\s[0-9]{3}\s(OK|Found)\s-\s+[0-9]+\sbytes\sin\s+([0-9]+|[0-9]+\.[0-9]+)\sseconds/';
+
+my %exceptions = ( 2 => "No Web Server present?" );
+
+my $t;
+
+$t += checkCmd( "./check_http $host_tcp_http      -wt 300 -ct 600", { 0 => 'continue',  2 => 'skip' }, $successOutput, %exceptions );
+$t += checkCmd( "./check_http $host_nonresponsive -wt   1 -ct   2", 2 );
+$t += checkCmd( "./check_http $hostname_invalid   -wt   1 -ct   2", 2 );
 
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
+
diff --git a/plugins/t/check_imap.t b/plugins/t/check_imap.t
index 47494e59..f86faa4c 100644
--- a/plugins/t/check_imap.t
+++ b/plugins/t/check_imap.t
@@ -1,34 +1,39 @@
-#! /usr/bin/perl -w
-
-#use strict;
-use Cache;
+#! /usr/bin/perl -w -I ..
+#
+# Internet Mail Access Protocol (IMAP) Server Tests via check_imap
+#
+# $Id$
+#
+
+use strict;
 use Test;
+use NPTest;
+
 use vars qw($tests);
+BEGIN {$tests = 5; plan tests => $tests}
 
-BEGIN {$tests = 3; plan tests => $tests}
+my $host_tcp_smtp      = getTestParameter( "host_tcp_smtp",      "NP_HOST_TCP_SMTP",      "mailhost",
+					   "A host providing an STMP Service (a mail server)");
 
-my $null = '';
-my $cmd;
-my $str;
-my $t;
+my $host_tcp_imap      = getTestParameter( "host_tcp_imap",      "NP_HOST_TCP_IMAP",      $host_tcp_smtp,
+					   "A host providing an IMAP Service (a mail server)");
 
-$cmd = "./check_imap $Cache::mailhost";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
+my $host_nonresponsive = getTestParameter( "host_nonresponsive", "NP_HOST_NONRESPONSIVE", "10.0.0.1",
+					   "The hostname of system not responsive to network requests" );
 
-$cmd = "./check_imap -H $Cache::mailhost -p 143 -w 9 -c 9 -t 10 -e '* OK'";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
+my $hostname_invalid   = getTestParameter( "hostname_invalid",   "NP_HOSTNAME_INVALID",   "nosuchhost",
+                                           "An invalid (not known to DNS) hostname" );
 
+my %exceptions = ( 2 => "No IMAP Server present?" );
+
+my $t;
+
+$t += checkCmd( "./check_imap    $host_tcp_imap",                                     0, undef, %exceptions );
+$t += checkCmd( "./check_imap -H $host_tcp_imap -p 143 -w  9 -c  9 -t  10 -e '* OK'", 0, undef, %exceptions );
+$t += checkCmd( "./check_imap    $host_tcp_imap -p 143 -wt 9 -ct 9 -to 10 -e '* OK'", 0, undef, %exceptions );
+$t += checkCmd( "./check_imap    $host_nonresponsive", 2 );
+$t += checkCmd( "./check_imap    $hostname_invalid",   2 );
 
-# Reverse compatibility
-$cmd = "./check_imap $Cache::mailhost -p 143 -wt 9 -ct 9 -to 10 -e '* OK'";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
 
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
-
diff --git a/plugins/t/check_load.t b/plugins/t/check_load.t
index 414e09d6..8f954dc4 100644
--- a/plugins/t/check_load.t
+++ b/plugins/t/check_load.t
@@ -1,27 +1,25 @@
-#! /usr/bin/perl -w
+#! /usr/bin/perl -w -I ..
+#
+# Load Average Tests via check_load
+#
+# $Id$
+#
 
 use strict;
 use Test;
-use vars qw($tests);
+use NPTest;
 
+use vars qw($tests);
 BEGIN {$tests = 4; plan tests => $tests}
 
-my $null = '';
-my $cmd;
-my $str;
-my $t;
+my $successOutput = '/^OK - load average: [0-9]\.?[0-9]+, [0-9]\.?[0-9]+, [0-9]\.?[0-9]+/';
+my $failureOutput = '/^CRITICAL - load average: [0-9]\.?[0-9]+, [0-9]\.?[0-9]+, [0-9]\.?[0-9]+/';
 
-$cmd = "./check_load -w 100,100,100 -c 100,100,100";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
-$t += ok $str, '/^OK - load average: [0-9]\.?[0-9]+, [0-9]\.?[0-9]+, [0-9]\.?[0-9]+/';
+my $t;
 
-$cmd = "./check_load -w 0,0,0 -c 0,0,0";
-$str = `$cmd`;
-$t += ok $?>>8,2;
-print "Test was: $cmd\n" unless ($?);
-$t += ok $str, '/^CRITICAL - load average: [0-9]\.?[0-9]+, [0-9]\.?[0-9]+, [0-9]\.?[0-9]+/';
+$t += checkCmd( "./check_load -w 100,100,100 -c 100,100,100", 0, $successOutput );
+$t += checkCmd( "./check_load -w 0,0,0       -c 0,0,0",       2, $failureOutput );
 
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
+
diff --git a/plugins/t/check_mysql.t b/plugins/t/check_mysql.t
index 0fae65fe..ad423595 100644
--- a/plugins/t/check_mysql.t
+++ b/plugins/t/check_mysql.t
@@ -1,26 +1,33 @@
-#! /usr/bin/perl -w
+#! /usr/bin/perl -w -I ..
+#
+# MySQL Database Server Tests via check_mysql
+#
+# $Id$
+#
 
 use strict;
-use Helper;
-use Cache;
 use Test;
+use NPTest;
+
 use vars qw($tests);
 
 BEGIN {$tests = 2; plan tests => $tests}
 
-exit(0) unless (-x "./check_mysql");
-
-my $null = '';
-my $cmd;
-my $str;
 my $t;
 
-my $mysqlserver = get_option("mysqlserver","host for MYSQL tests");
+my $failureOutput = '/Access denied for user: /';
+
+if ( -x "./check_mysql" )
+{
+  my $mysqlserver = getTestParameter( "mysql_server", "NP_MYSQL_SERVER", undef,
+				      "A MySQL Server");
 
-$cmd = "./check_mysql -H $mysqlserver -P 3306";
-$str = `$cmd`;
-$t += ok $?>>8,2;
-$t += ok $str, '/Access denied for user: /';
+  $t += checkCmd( "./check_mysql -H $mysqlserver -P 3306", 2, $failureOutput );
+}
+else
+{
+  $t += skipMissingCmd( "./check_mysql", $tests );
+}
 
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
diff --git a/plugins/t/check_ping.t b/plugins/t/check_ping.t
index 97bc660e..49c568a6 100644
--- a/plugins/t/check_ping.t
+++ b/plugins/t/check_ping.t
@@ -1,33 +1,36 @@
-#! /usr/bin/perl -w
+#! /usr/bin/perl -w -I ..
+#
+# Ping Response Tests via check_ping
+#
+# $Id$
+#
 
 use strict;
-use Cache;
 use Test;
+use NPTest;
+
 use vars qw($tests);
 
-BEGIN {$tests = 5; plan tests => $tests}
+BEGIN {$tests = 6; plan tests => $tests}
+
+my $successOutput = '/PING (ok|OK) - Packet loss = +[0-9]{1,2}\%, +RTA = [\.0-9]+ ms/';
+my $failureOutput = '/Packet loss = +[0-9]{1,2}\%, +RTA = [\.0-9]+ ms/';
+
+my $host_responsive    = getTestParameter( "host_responsive",   "NP_HOST_RESPONSIVE",     "localhost",
+					   "The hostname of system responsive to network requests" );
+
+my $host_nonresponsive = getTestParameter( "host_nonresponsive", "NP_HOST_NONRESPONSIVE", "10.0.0.1",
+					   "The hostname of system not responsive to network requests" );
+
+my $hostname_invalid   = getTestParameter( "hostname_invalid",   "NP_HOSTNAME_INVALID",   "nosuchhost",
+                                           "An invalid (not known to DNS) hostname" );
 
-my $null = '';
-my $cmd;
-my $str;
 my $t;
 
-$cmd = "./check_ping 127.0.0.1 100 100 1000 1000 -p 1";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
-$t += ok $str, '/PING (ok|OK) - Packet loss = +[0-9]{1,2}\%, +RTA = [\.0-9]+ ms/';
-
-$cmd = "./check_ping 127.0.0.1 0 0 0 0 -p 1";
-$str = `$cmd`;
-$t += ok $?>>8,2;
-print "Test was: $cmd\n" unless ($?);
-$t += ok $str, '/Packet loss = +[0-9]{1,2}\%, +RTA = [\.0-9]+ ms/';
-
-$cmd = "./check_ping $Cache::nullhost 0 0 0 0 -p 1 -to 1";
-$str = `$cmd`;
-$t += ok $?>>8,2;
-print "Test was: $cmd\n" unless ($?);
+$t += checkCmd( "./check_ping $host_responsive    100 100 1000 1000 -p 1",       0, $successOutput );
+$t += checkCmd( "./check_ping $host_responsive      0   0    0    0 -p 1",       2, $failureOutput );
+$t += checkCmd( "./check_ping $host_nonresponsive   0   0    0    0 -p 1 -to 1", 2 );
+$t += checkCmd( "./check_ping $hostname_invalid     0   0    0    0 -p 1 -to 1", 3 );
 
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
diff --git a/plugins/t/check_pop.t b/plugins/t/check_pop.t
index 60b5a4ef..e78f963e 100644
--- a/plugins/t/check_pop.t
+++ b/plugins/t/check_pop.t
@@ -1,31 +1,38 @@
-#! /usr/bin/perl -w
+#! /usr/bin/perl -w -I ..
+#
+# Post Office Protocol (POP) Server Tests via check_pop
+#
+# $Id$
+#
 
-#use strict;
-use Cache;
+use strict;
 use Test;
+use NPTest;
+
 use vars qw($tests);
+BEGIN {$tests = 5; plan tests => $tests}
 
-BEGIN {$tests = 3; plan tests => $tests}
+my $host_tcp_smtp      = getTestParameter( "host_tcp_smtp",      "NP_HOST_TCP_SMTP",      "mailhost",
+					   "A host providing an STMP Service (a mail server)");
 
-my $null = '';
-my $cmd;
-my $str;
-my $t;
+my $host_tcp_pop       = getTestParameter( "host_tcp_pop",       "NP_HOST_TCP_POP",       $host_tcp_smtp,
+					   "A host providing an POP Service (a mail server)");
+
+my $host_nonresponsive = getTestParameter( "host_nonresponsive", "NP_HOST_NONRESPONSIVE", "10.0.0.1",
+					   "The hostname of system not responsive to network requests" );
 
-$cmd = "./check_pop $Cache::mailhost";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
+my $hostname_invalid   = getTestParameter( "hostname_invalid",   "NP_HOSTNAME_INVALID",   "nosuchhost",
+                                           "An invalid (not known to DNS) hostname" );
 
-$cmd = "./check_pop -H $Cache::mailhost -p 110 -w 9 -c 9 -t 10 -e '+OK'";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
+my %exceptions = ( 2 => "No POP Server present?" );
+
+my $t;
 
-$cmd = "./check_pop $Cache::mailhost -p 110 -wt 9 -ct 9 -to 10 -e '+OK'";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
+$t += checkCmd( "./check_pop    $host_tcp_pop", 0, undef, %exceptions );
+$t += checkCmd( "./check_pop -H $host_tcp_pop -p 110 -w  9 -c  9 -t  10 -e '+OK'", 0, undef, %exceptions );
+$t += checkCmd( "./check_pop    $host_tcp_pop -p 110 -wt 9 -ct 9 -to 10 -e '+OK'", 0, undef, %exceptions );
+$t += checkCmd( "./check_pop    $host_nonresponsive", 2 );
+$t += checkCmd( "./check_pop    $hostname_invalid",   2 );
 
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
diff --git a/plugins/t/check_procs.t b/plugins/t/check_procs.t
index da49ac61..cb5f1224 100644
--- a/plugins/t/check_procs.t
+++ b/plugins/t/check_procs.t
@@ -1,51 +1,24 @@
-#! /usr/bin/perl -w
+#! /usr/bin/perl -w -I ..
+#
+# Process Tests via check_procs
+#
+# $Id$
+#
 
 use strict;
-use Cache;
 use Test;
-use vars qw($tests);
+use NPTest;
 
+use vars qw($tests);
 BEGIN {$tests = 10; plan tests => $tests}
 
-my $null = '';
-my $cmd;
-my $str;
 my $t;
 
-# Reverse Compatibility
-$cmd = "./check_procs -w 100000 -c 100000";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
-$t += ok $str, '/^PROCS OK: [0-9]+ process(es)?$/';
-
-# Reverse Compatibility
-$cmd = "./check_procs -w 100000 -c 100000 -s Z";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
-$t += ok $str, '/^PROCS OK: [0-9]+ process(es)? with /';
-
-# Reverse Compatibility
-$cmd = "./check_procs -w 0 -c 10000000";
-$str = `$cmd`;
-$t += ok $?>>8,1;
-print "Test was: $cmd\n" unless ($?);
-$t += ok $str, '/^PROCS WARNING: [0-9]+ process(es)?$/';
-
-# Reverse Compatibility
-$cmd = "./check_procs -w 0 -c 0";
-$str = `$cmd`;
-$t += ok $?>>8,2;
-print "Test was: $cmd\n" unless ($?);
-$t += ok $str, '/^PROCS CRITICAL: [0-9]+ process(es)?$/';
-
-# Reverse Compatibility
-$cmd = "./check_procs -w 0 -c 0 -s S";
-$str = `$cmd`;
-$t += ok $?>>8,2;
-print "Test was: $cmd\n" unless ($?);
-$t += ok $str, '/^PROCS CRITICAL: [0-9]+ process(es)? with /';
+$t += checkCmd( "./check_procs -w 100000 -c   100000",      0, '/^PROCS OK: [0-9]+ process(es)?$/' );
+$t += checkCmd( "./check_procs -w 100000 -c   100000 -s Z", 0, '/^PROCS OK: [0-9]+ process(es)? with /' );
+$t += checkCmd( "./check_procs -w      0 -c 10000000",      1, '/^PROCS WARNING: [0-9]+ process(es)?$/' );
+$t += checkCmd( "./check_procs -w 0      -c        0",      2, '/^PROCS CRITICAL: [0-9]+ process(es)?$/' );
+$t += checkCmd( "./check_procs -w 0      -c        0 -s S", 2, '/^PROCS CRITICAL: [0-9]+ process(es)? with /' );
 
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
diff --git a/plugins/t/check_smtp.t b/plugins/t/check_smtp.t
index 2a82b877..3bf32ecf 100644
--- a/plugins/t/check_smtp.t
+++ b/plugins/t/check_smtp.t
@@ -1,31 +1,34 @@
-#! /usr/bin/perl -w
+#! /usr/bin/perl -w -I ..
+#
+# Simple Mail Transfer Protocol (SMTP) Test via check_smtp
+#
+# $Id$
+#
 
-#use strict;
-use Cache;
+use strict;
 use Test;
+use NPTest;
+
 use vars qw($tests);
+BEGIN {$tests = 5; plan tests => $tests}
 
-BEGIN {$tests = 3; plan tests => $tests}
+my $host_tcp_smtp      = getTestParameter( "host_tcp_smtp",      "NP_HOST_TCP_SMTP",      "mailhost",
+					   "A host providing an STMP Service (a mail server)");
 
-my $null = '';
-my $cmd;
-my $str;
-my $t;
+my $host_nonresponsive = getTestParameter( "host_nonresponsive", "NP_HOST_NONRESPONSIVE", "10.0.0.1",
+					   "The hostname of system not responsive to network requests" );
 
-$cmd = "./check_smtp $Cache::mailhost";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
+my $hostname_invalid   = getTestParameter( "hostname_invalid",   "NP_HOSTNAME_INVALID",   "nosuchhost",
+                                           "An invalid (not known to DNS) hostname" );
+my %exceptions = ( 2 => "No SMTP Server present?" );
 
-$cmd = "./check_smtp -H $Cache::mailhost -p 25 -t 1 -w 9 -c 9 -t 10 -e 220";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
+my $t;
 
-$cmd = "./check_smtp -H $Cache::mailhost -p 25 -wt 9 -ct 9 -to 10 -e 220";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
+$t += checkCmd( "./check_smtp    $host_tcp_smtp",                                   0, undef, %exceptions );
+$t += checkCmd( "./check_smtp -H $host_tcp_smtp -p 25 -t 1 -w 9 -c 9 -t 10 -e 220", 0, undef, %exceptions );
+$t += checkCmd( "./check_smtp -H $host_tcp_smtp -p 25 -wt 9 -ct 9 -to 10 -e 220",   0, undef, %exceptions );
+$t += checkCmd( "./check_smtp    $host_nonresponsive", 2 );
+$t += checkCmd( "./check_smtp    $hostname_invalid",   3 );
 
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
diff --git a/plugins/t/check_snmp.t b/plugins/t/check_snmp.t
index 162b0b9b..b45b6c01 100644
--- a/plugins/t/check_snmp.t
+++ b/plugins/t/check_snmp.t
@@ -1,52 +1,57 @@
-#! /usr/bin/perl -w
+#! /usr/bin/perl -w -I ..
+#
+# Simple Network Management Protocol (SNMP) Test via check_snmp
+#
+# $Id$
+#
 
 use strict;
-use Helper;
-use Cache;
 use Test;
-use vars qw($tests);
+use NPTest;
 
-BEGIN {$tests = 8; plan tests => $tests}
+use vars qw($tests);
+BEGIN {$tests = 12; plan tests => $tests}
 
-my $null = '';
-my $cmd;
-my $str;
 my $t;
-my $community=get_option("snmp_community","SNMP community name");
-
-exit(0) unless (-x "./check_snmp");
-
-$cmd = "./check_snmp -H 127.0.0.1 -C $community -o system.sysUpTime.0 -w 1: -c 1:";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
-chomp $str;
-$t += ok $str, '/^SNMP OK - \d+/';
-
-$cmd = "./check_snmp -H 127.0.0.1 -C $community -o host.hrSWRun.hrSWRunTable.hrSWRunEntry.hrSWRunIndex.1 -w 1:1 -c 1:1";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
-chomp $str;
-$t += ok $str, '/^SNMP OK - 1\s*$/';
-
-$cmd = "./check_snmp -H 127.0.0.1 -C $community -o host.hrSWRun.hrSWRunTable.hrSWRunEntry.hrSWRunIndex.1 -w 0 -c 1:";
-$str = `$cmd`;
-$t += ok $?>>8,1;
-print "Test was: $cmd\n" unless ($?);
-chomp $str;
-$t += ok $str, '/^SNMP WARNING - \*1\*\s*$/';
-
-$cmd = "./check_snmp -H 127.0.0.1 -C $community -o host.hrSWRun.hrSWRunTable.hrSWRunEntry.hrSWRunIndex.1 -w :0 -c 0";
-$str = `$cmd`;
-$t += ok $?>>8,2;
-print "Test was: $cmd\n" unless ($?);
-chomp $str;
-$t += ok $str, '/^SNMP CRITICAL - \*1\*\s*$/';
-
-#host.hrSWRun.hrSWRunTable.hrSWRunEntry.hrSWRunIndex.1 = 1
-#enterprises.ucdavis.memory.memAvailSwap.0
-#./check_snmp 127.0.0.1 -C staff -o enterprises.ucdavis.diskTable.dskEntry.dskAvail.1,enterprises.ucdavis.diskTable.dskEntry.dskPercent.1 -w 100000: -c 50000: -l Space on root -u 'bytes free (','% used)'
+
+if ( -x "./check_snmp" )
+{
+  my $host_snmp          = getTestParameter( "host_snmp",          "NP_HOST_SNMP",      "localhost",
+					     "A host providing an SNMP Service");
+
+  my $snmp_community     = getTestParameter( "snmp_community",     "NP_SNMP_COMMUNITY", "public",
+					     "The SNMP Community string for SNMP Testing" );
+
+  my $host_nonresponsive = getTestParameter( "host_nonresponsive", "NP_HOST_NONRESPONSIVE", "10.0.0.1",
+					     "The hostname of system not responsive to network requests" );
+
+  my $hostname_invalid   = getTestParameter( "hostname_invalid",   "NP_HOSTNAME_INVALID",   "nosuchhost",
+					     "An invalid (not known to DNS) hostname" );
+
+  my %exceptions = ( 3 => "No SNMP Server present?" );
+
+
+  $t += checkCmd( "./check_snmp -H $host_snmp -C $snmp_community -o system.sysUpTime.0 -w 1: -c 1:",
+		  { 0 => 'continue',  3 => 'skip' }, '/^SNMP OK - \d+/',		%exceptions );
+
+  $t += checkCmd( "./check_snmp -H $host_snmp -C $snmp_community -o host.hrSWRun.hrSWRunTable.hrSWRunEntry.hrSWRunIndex.1 -w 1:1 -c 1:1",
+		  { 0 => 'continue',  3 => 'skip' }, '/^SNMP OK - 1\s*$/',		%exceptions );
+
+  $t += checkCmd( "./check_snmp -H $host_snmp -C $snmp_community -o host.hrSWRun.hrSWRunTable.hrSWRunEntry.hrSWRunIndex.1 -w 0   -c 1:",
+		  { 1 => 'continue',  3 => 'skip' }, '/^SNMP WARNING - \*1\*\s*$/',	%exceptions );
+
+  $t += checkCmd( "./check_snmp -H $host_snmp -C $snmp_community -o host.hrSWRun.hrSWRunTable.hrSWRunEntry.hrSWRunIndex.1 -w  :0 -c 0",
+		  { 2 => 'continue',  3 => 'skip' }, '/^SNMP CRITICAL - \*1\*\s*$/',	%exceptions );
+
+  $t += checkCmd( "./check_snmp -H $host_nonresponsive -C $snmp_community -o system.sysUpTime.0 -w 1: -c 1:", 3, '/SNMP problem - /' );
+
+  $t += checkCmd( "./check_snmp -H $hostname_invalid   -C $snmp_community -o system.sysUpTime.0 -w 1: -c 1:", 3, '/SNMP problem - /' );
+
+}
+else
+{
+  $t += skipMissingCmd( "./check_snmp", $tests );
+}
 
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
diff --git a/plugins/t/check_swap.t b/plugins/t/check_swap.t
index 5b702f00..348010de 100644
--- a/plugins/t/check_swap.t
+++ b/plugins/t/check_swap.t
@@ -1,34 +1,25 @@
-#! /usr/bin/perl -w
+#! /usr/bin/perl -w -I ..
+#
+# Swap Space Tests via check_swap
+#
+# $Id$
+#
 
 use strict;
-use Cache;
 use Test;
-use vars qw($tests);
+use NPTest;
 
+use vars qw($tests);
 BEGIN {$tests = 6; plan tests => $tests}
 
-my $null = '';
-my $cmd;
-my $str;
 my $t;
 
-$cmd = "./check_swap 100 100";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
-$t += ok $str, '/^Swap ok - Swap used\: +[0-9]{1,2}\% \([0-9]+ bytes out of [0-9]+\)$/';
-
-$cmd = "./check_swap 0 0";
-$str = `$cmd`;
-$t += ok $?>>8,2;
-print "Test was: $cmd\n" unless ($?);
-$t += ok $str, '/^CRITICAL - Swap used\: +[0-9]{1,2}\% \([0-9]+ bytes out of [0-9]+\)$/';
+my $successOutput = '/^SWAP OK - [0-9]+\% free \([0-9]+ MB out of [0-9]+ MB\)/';
+my $failureOutput = '/^SWAP CRITICAL - [0-9]+\% free \([0-9]+ MB out of [0-9]+ MB\)/';
 
-$cmd = "./check_swap 100 100 1000000000 1000000000";
-$str = `$cmd`;
-$t += ok $?>>8,2;
-print "Test was: $cmd\n" unless ($?);
-$t += ok $str, '/^CRITICAL - Swap used\: +[0-9]{1,2}\% \([0-9]+ bytes out of [0-9]+\)$/';
+$t += checkCmd( "./check_swap -w 1048576 -c 1048576", 0, $successOutput ); # 1MB  free
+$t += checkCmd( "./check_swap -w   1\%   -c     1\%", 0, $successOutput ); # 1%   free
+$t += checkCmd( "./check_swap -w 100\%   -c   100\%", 2, $failureOutput ); # 100% free (always fails)
 
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
diff --git a/plugins/t/check_tcp.t b/plugins/t/check_tcp.t
index 21c3b774..ffe559df 100644
--- a/plugins/t/check_tcp.t
+++ b/plugins/t/check_tcp.t
@@ -1,27 +1,34 @@
-#! /usr/bin/perl -w
+#! /usr/bin/perl -w -I ..
+#
+# TCP Connection Based Tests via check_tcp
+#
+# $Id$
+#
 
-#use strict;
-use Cache;
+use strict;
 use Test;
+use NPTest;
+
 use vars qw($tests);
+BEGIN {$tests = 5; plan tests => $tests}
 
-BEGIN {$tests = 3; plan tests => $tests}
+my $host_tcp_http      = getTestParameter( "host_tcp_http",      "NP_HOST_TCP_HTTP",      "localhost",
+					   "A host providing the HTTP Service (a web server)" );
 
-my $null = '';
-my $cmd;
-my $str;
-my $t;
+my $host_nonresponsive = getTestParameter( "host_nonresponsive", "NP_HOST_NONRESPONSIVE", "10.0.0.1",
+					   "The hostname of system not responsive to network requests" );
+
+my $hostname_invalid   = getTestParameter( "hostname_invalid",   "NP_HOSTNAME_INVALID",   "nosuchhost",
+                                           "An invalid (not known to DNS) hostname" );
 
-$cmd = "./check_tcp $Cache::hostname -p 80 -wt 300 -ct 600";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "$cmd\n" if ($?);
-$t += ok $str, '/^TCP OK\s-\s+[0-9]?\.?[0-9]+ second response time on port 80/';
+my $successOutput = '/^TCP OK\s-\s+[0-9]?\.?[0-9]+ second response time on port [0-9]+/';
+
+my $t;
 
-$cmd = "./check_tcp $Cache::nullhost -p 81 -wt 0 -ct 0 -to 1";
-$str = `$cmd`;
-$t += ok $?>>8,2;
-print "$cmd\n" unless ($?);
+$t += checkCmd( "./check_tcp $host_tcp_http      -p 80 -wt 300 -ct 600",       0, $successOutput );
+$t += checkCmd( "./check_tcp $host_tcp_http      -p 81 -wt   0 -ct   0 -to 1", 2 ); # use invalid port for this test
+$t += checkCmd( "./check_tcp $host_nonresponsive -p 80 -wt   0 -ct   0 -to 1", 2 );
+$t += checkCmd( "./check_tcp $hostname_invalid   -p 80 -wt   0 -ct   0 -to 1", 2 );
 
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
diff --git a/plugins/t/check_time.t b/plugins/t/check_time.t
index 4d8c5c2b..05878dc2 100644
--- a/plugins/t/check_time.t
+++ b/plugins/t/check_time.t
@@ -1,52 +1,40 @@
-#! /usr/bin/perl -w
+#! /usr/bin/perl -w -I ..
+#
+# System Time Tests via check_time
+#
+# $Id$
+#
 
 use strict;
-use Cache;
-use Helper;
 use Test;
+use NPTest;
+
 use vars qw($tests);
+BEGIN {$tests = 8; plan tests => $tests}
 
-BEGIN {$tests = 6; plan tests => $tests}
+my $host_udp_time      = getTestParameter( "host_udp_time",      "NP_HOST_UDP_TIME",      "localhost",
+					   "A host providing the UDP Time Service" );
 
-my $null = '';
-my $cmd;
-my $str;
-my $t;
-my $udp_hostname=get_option("udp_hostname","UDP host name");
+my $host_nonresponsive = getTestParameter( "host_nonresponsive", "NP_HOST_NONRESPONSIVE", "10.0.0.1",
+                                           "The hostname of system not responsive to network requests" );
 
-# standard mode
+my $hostname_invalid   = getTestParameter( "hostname_invalid",   "NP_HOSTNAME_INVALID",   "nosuchhost",
+                                           "An invalid (not known to DNS) hostname" );
 
-$cmd = "./check_time -H $udp_hostname -w 999999,59 -c 999999,59 -t 60";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
-$t += ok $str, '/^TIME OK - [0-9]+ second time difference$/';
+my $successOutput = '/^TIME OK - [0-9]+ second time difference/';
 
-$cmd = "./check_time -H $udp_hostname -w 999999 -W 59 -c 999999 -C 59 -t 60";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
-$t += ok $str, '/^TIME OK - [0-9]+ second time difference$/';
+my $t;
 
-# reverse compatibility mode
+# standard mode
+$t += checkCmd( "./check_time -H $host_udp_time -w 999999,59       -c 999999,59       -t 60", 0, $successOutput );
+$t += checkCmd( "./check_time -H $host_udp_time -w 999999    -W 59 -c 999999    -C 59 -t 60", 0, $successOutput );
 
-$cmd = "./check_time $udp_hostname -wt 59 -ct 59 -cd 999999 -wd 999999 -to 60";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
-$t += ok $str, '/^TIME OK - [0-9]+ second time difference$/';
+# reverse compatibility mode
+$t += checkCmd( "./check_time    $host_udp_time -wt 59 -ct 59 -cd 999999 -wd 999999 -to 60",  0, $successOutput );
 
 # failure mode
-
-#$cmd = "./check_time -H $Cache::nullhost -t 1";
-#$str = `$cmd`;
-#$t += ok $?>>8,255;
-#print "Test was: $cmd\n" unless ($?);
-
-#$cmd = "./check_time -H $Cache::noserver -t 1";
-#$str = `$cmd`;
-#$t += ok $?>>8,255;
-#print "$cmd\n" unless ($?);
+$t += checkCmd( "./check_time -H $host_nonresponsive -t 1", 2 );
+$t += checkCmd( "./check_time -H $hostname_invalid   -t 1", 3 );
 
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
diff --git a/plugins/t/check_udp.t b/plugins/t/check_udp.t
index abbf5e49..c80e08ad 100644
--- a/plugins/t/check_udp.t
+++ b/plugins/t/check_udp.t
@@ -1,24 +1,33 @@
-#! /usr/bin/perl -w
+#! /usr/bin/perl -w -I ..
+#
+# UDP Connection Based Tests via check_udp
+#
+# $Id$
+#
 
-#use strict;
-use Cache;
-use Helper;
+use strict;
 use Test;
+use NPTest;
+
 use vars qw($tests);
+BEGIN {$tests = 3; plan tests => $tests} #TODO# Update to 4 when the commented out test is fixed
 
-BEGIN {$tests = 3; plan tests => $tests}
+my $host_udp_time      = getTestParameter( "host_udp_time",      "NP_HOST_UDP_TIME",      "localhost",
+                                           "A host providing the UDP Time Service" );
 
-my $null = '';
-my $str;
-my $t;
-my $hostname=get_option("udp_hostname","UDP host name");
+my $host_nonresponsive = getTestParameter( "host_nonresponsive", "NP_HOST_NONRESPONSIVE", "10.0.0.1",
+                                           "The hostname of system not responsive to network requests" );
+
+my $hostname_invalid   = getTestParameter( "hostname_invalid",   "NP_HOSTNAME_INVALID",   "nosuchhost",
+                                           "An invalid (not known to DNS) hostname" );
 
-$str = `./check_udp $hostname -p 37 -wt 300 -ct 600`;
-$t += ok $?>>8,0;
-$t += ok $str, '/^Connection accepted on port 37 - [0-9]+ second response time$/';
+my $successOutput = '/^Connection accepted on port [0-9]+ - [0-9]+ second response time$/';
+
+my $t;
 
-$str = `./check_udp $Cache::nullhost -p 80 -wt 0 -ct 0 -to 1`;
-$t += ok $?>>8,2;
+$t += checkCmd( "./check_udp -H $host_udp_time      -p 37 -wt 300 -ct 600",       0, $successOutput );
+$t += checkCmd( "./check_udp    $host_nonresponsive -p 37 -wt 0   -ct   0 -to 1", 2 );
+#TODO# $t += checkCmd( "./check_udp    $hostname_invalid   -p 37 -wt 0   -ct   0 -to 1", 2 ); # Currently returns 0 (ie success)
 
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
diff --git a/plugins/t/check_users.t b/plugins/t/check_users.t
index 593f1737..4b313d30 100644
--- a/plugins/t/check_users.t
+++ b/plugins/t/check_users.t
@@ -1,28 +1,25 @@
-#! /usr/bin/perl -w
+#! /usr/bin/perl -w -I ..
+#
+# Logged in Users Tests via check_users
+#
+# $Id$
+#
 
 use strict;
-use Cache;
 use Test;
-use vars qw($tests);
+use NPTest;
 
+use vars qw($tests);
 BEGIN {$tests = 4; plan tests => $tests}
 
-my $null = '';
-my $cmd;
-my $str;
-my $t;
+my $successOutput = '/^USERS OK - [0-9]+ users currently logged in/';
+my $failureOutput = '/^USERS CRITICAL - [0-9]+ users currently logged in/';
 
-$cmd = "./check_users 1000 1000";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
-$t += ok $str, '/^USERS OK - +[0-9]+ users currently logged in$/';
+my $t;
 
-$cmd = "./check_users 0 0";
-$str = `$cmd`;
-$t += ok $?>>8,2;
-print "Test was: $cmd\n" unless ($?);
-$t += ok $str, '/^USERS CRITICAL - [0-9]+ +users currently logged in$/';
+$t += checkCmd( "./check_users 1000 1000", 0, $successOutput );
+$t += checkCmd( "./check_users    0    0", 2, $failureOutput );
 
 exit(0) if defined($Test::Harness::VERSION);
 exit($tests - $t);
+
diff --git a/plugins/t/check_vsz.t b/plugins/t/check_vsz.t
deleted file mode 100644
index 95972619..00000000
--- a/plugins/t/check_vsz.t
+++ /dev/null
@@ -1,28 +0,0 @@
-#! /usr/bin/perl -w
-
-use strict;
-use Cache;
-use Test;
-use vars qw($tests);
-
-BEGIN {$tests = 4; plan tests => $tests}
-
-my $null = '';
-my $cmd;
-my $str;
-my $t;
-
-$cmd = "./check_vsz 100000 1000000 init";
-$str = `$cmd`;
-$t += ok $?>>8,0;
-print "Test was: $cmd\n" if ($?);
-$t += ok $str, '/^ok \(all VSZ\<[0-9]+\)/';
-
-$cmd = "./check_vsz 0 0";
-$str = `$cmd`;
-$t += ok $?>>8,2;
-print "Test was: $cmd\n" unless ($?);
-$t += ok $str, '/^CRITICAL \(VSZ\>[0-9]+\)/';
-
-exit(0) if defined($Test::Harness::VERSION);
-exit($tests - $t);
diff --git a/test.pl.in b/test.pl.in
index e88c473d..22d0576d 100755
--- a/test.pl.in
+++ b/test.pl.in
@@ -1,91 +1,51 @@
-#!/usr/bin/perl -w
+#!/usr/bin/perl -w -I .. -I ../..
+#
+# Wrapper for running the test harnesses
+#
+# $Id$
+#
+
 use strict;
 
-my $file = '../Cache';
-unless (-f "$file.pm") {
-	open(CACHE,">$file.pm") or die "Cannot open cache";
-	print CACHE "package Cache;
-require Exporter;
-\@ISA=qw(Exporter);
-\@EXPORT=qw();
-1;
-";
-	close CACHE;
-}
+use Getopt::Long;
 
-use Helper;
-my ($tstdir,$spath,$hostname,$httphost,$mailhost,$dnshost,$noserver,$nullhost,$quickcheck);
+use NPTest qw(DetermineTestHarnessDirectory TestsFrom);
 
-use Getopt::Long;
-GetOptions
-	("tstdir:s"=>\$tstdir,
-	 "spath:s"=>\$spath,
-	 "hostname:s"=>\$hostname,
-	 "httpname:s"=>\$httphost,
-	 "mailhost:s"=>\$mailhost,
-	 "dnshost:s"=>\$dnshost,
-	 "noserver:s"=>\$noserver,
-	 "nullhost:s"=>\$nullhost,
-	 "quickcheck"=>\$quickcheck);
+my $tstdir;
+
+if ( ! GetOptions( "testdir:s" => \$tstdir ) )
+{
+  print "Usage: ${0} [--testdir=<directory>] [<test_harness.t> ...]\n";
+  exit 1;
+}
 
-$spath = "." unless ($spath);
+my @tests;
 
-unless ($quickcheck) {
-    
-	$hostname = get_option("hostname","host for FTP/UDP tests")		unless ($hostname);
-	$httphost = get_option("httphost","host for HTTP tests")		unless ($httphost);
-	$mailhost = get_option("mailhost","host for SMTP/IMAP/POP tests")	unless ($mailhost);
-	$dnshost  = get_option("dnshost","hostname to lookup for DNS tests")	unless ($dnshost);
-	$noserver = get_option("noserver","host that rejects above services")	unless ($noserver);
-	# This machine should not be locatable from your network.  Use IP
-	# private addresses like 10.x.x.x and pick one that does not exist
-	# on your LAN/WAN
-	$nullhost = get_option("nullhost","nonexistent IP address (e.g., 10.0.0.0)")	unless ($nullhost);
+if ( scalar( @ARGV ) )
+{
+  @tests = @ARGV;
 }
+else
+{
+  my $directory = DetermineTestHarnessDirectory( $tstdir );
+
+  if ( !defined( $directory ) )
+  {
+    print STDERR "$0: Unable to determine the test harness directory - ABORTING\n";
+    exit 2;
+  }
 
-my @dots;
-if (@ARGV) {
-	@dots = @ARGV;
-} else {
-	unless ($tstdir) {
-		if (-d './t') {
-			$tstdir = './t';
-		} else {
-			$tstdir = $ENV{PWD};
-			$tstdir = `/bin/pwd` unless defined($tstdir);
-			chomp $tstdir;
-			if (defined($tstdir)) {
-				$tstdir =~ s|^(.*)/([^/]+)/?$|$1/$2|;
-				if (-d "../../$2/t") {
-					$tstdir = "../../$2/t";
-				} elsif (-d "$tstdir/t") {
-					$tstdir = "$tstdir/t";
-				}
-			} else {
-				die "Could not get PWD from environment\n";
-			}
-		}
-	}
-	$tstdir = './t' unless ($tstdir);
-	opendir(DIR, $tstdir) || die "can't opendir $tstdir: $!";
-	while ($file = readdir(DIR)) {
-		push @dots, "$tstdir/$file" if ($file =~ m/^[^\.]+\.t$/);
-	}
-	closedir DIR;
+  @tests = TestsFrom( $directory, 1 );
 }
-my $prog;
-my $test;
-my @progs;
-foreach $test (@dots) {
-	$prog=`basename $test .t`;
-	chomp $prog;
-	if ( -e "$prog" ){
-		push @progs, "$test";
-	}else{
-		print "No binary found for $prog\n";
-	}
+
+if ( ! scalar( @tests ) )
+{
+  print STDERR "$0: Unable to determine the test harnesses to run - ABORTING\n";
+  exit 3;
 }
 
 use Test::Harness;
+
 #$Test::Harness::verbose=1;
-runtests(@progs);
+
+runtests( @tests );