Provided by: libtest-lectrotest-perl_0.5001-3_all bug


       Test::LectroTest::Compat - Use LectroTest property checks in a Test::Simple world


       version 0.5001


           #!/usr/bin/perl -w

           use MyModule;  # contains code we want to test
           use Test::More tests => 2;
           use Test::LectroTest::Compat;

           # property specs can now use Test::Builder-based
           # tests such as Test::More's cmp_ok()

           my $prop_nonnegative = Property {
               ##[ x <- Int, y <- Int ]##
               cmp_ok(MyModule::my_function( $x, $y ), '>=', 0);
           }, name => "my_function output is non-negative" ;

           # and we can now check whether properties hold
           # as a Test::Builder-style test that integrates
           # with other T::B tests

           holds( $prop_nonnegative );   # test whether prop holds
           cmp_ok( 0, '<', 1, "trivial 0<1 test" );  # a "normal" test


       This module lets you use mix LectroTest property checking with other popular Test::*
       modules.  With it, you can use "is()"- and "ok()"-style assertions from Test::* modules
       within your LectroTest property specifications and you can check LectroTest properties as
       part of a Test::Simple or Test::More test plan.  (You can actually take advantage of any
       module based on Test::Builder, not just Test::Simple and Test::More.)

       The module exports a single function "holds" which is described below.

   holds(property, opts...)
           holds( $prop_nonnegative );  # check prop_nonnegative

           holds( $prop_nonnegative, trials => 100 );

               Property {
                   ##[ x <- Int ]##
                   my_function2($x) < 0;
               }, name => "my_function2 is non-positive"

       Checks whether the given property holds.

       When called, this method creates a new Test::LectroTest::TestRunner, asks the TestRunner
       to check the property, and then reports the result to Test::Builder, which in turn reports
       to you as part of a typical Test::Simple- or Test::More-style test plan.  Any options you
       provide to "holds" after the property will be passed to the "TestRunner" so you can change
       the number of trials to run and so on.  (See the docs for "new" in
       Test::LectroTest::TestRunner for the complete list of options.)


       LectroTest can record failure-causing test cases to a file, and it can play those test
       cases back as part of its normal testing strategy.  The easiest way to take advantage of
       this feature is to set the regressions parameter when you "use" this module:

           use Test::LectroTest::Compat
               regressions => "regressions.txt";

       This tells LectroTest to use the file "regressions.txt" for both recording and playing
       back failures.  If you want to record and play back from separate files, or want only to
       record or play back, use the record_failures and/or playback_failures options:

           use Test::LectroTest::Compat
               playback_failures => "regression_suite_for_my_module.txt",
               record_failures   => "failures_in_the_field.txt";

       See Test::LectroTest::RegressionTesting for more.

       NOTE:  If you pass any of the recording or playback parameters to
       Test::LectroTest::Compat, you must have version 0.3500 or greater of LectroTest installed.
       Module authors, update your modules' build dependencies accordingly.


       In order to integrate with the Test::Builder testing harness (whose underlying testing
       model is somewhat incompatible with the needs of random trial-based testing) this module
       redefines two Test::Builder functions ("ok()" and "diag()") for the duration of each
       property check.


       For a gentle introduction to LectroTest, see Test::LectroTest::Tutorial.  Also, the slides
       from my LectroTest talk for the Pittsburgh Perl Mongers make for a great introduction.
       Download a copy from the LectroTest home (see below).

       Test::LectroTest::RegressionTesting explains how to test for regressions and corner cases
       using LectroTest.

       Test::LectroTest::Property explains in detail what you can put inside of your property

       Test::LectroTest::Generator describes the many generators and generator combinators that
       you can use to define the test or condition space that you want LectroTest to search for

       Test::LectroTest::TestRunner describes the objects that check your properties and tells
       you how to turn their control knobs.  You'll want to look here if you're interested in
       customizing the testing procedure.

       Test::Simple and Test::More explain how to do simple case-based testing in Perl.

       Test::Builder is the test harness upon which this module is built.


       Tom Moertel (


       The LectroTest project was inspired by Haskell's QuickCheck module by Koen Claessen and
       John Hughes:


       Copyright (c) 2004-13 by Thomas G Moertel.  All rights reserved.

       This program is free software; you can redistribute it and/or modify it under the same
       terms as Perl itself.