1Test::LectroTest::RegreUssseironCToensttriinbgu(t3e)d PeTrelstD:o:cLuemcetnrtoaTteisotn::RegressionTesting(3)
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NAME

6       Test::LectroTest::RegressionTesting - How to do regression testing (for
7       free!)
8

VERSION

10       version 0.5001
11

SYNOPSIS

13           use Test::LectroTest
14               regressions => "regressions.txt";
15
16           # -- OR --
17
18           use Test::LectroTest
19               playback_failures => "regression_suite_for_my_module.txt",
20               record_failures   => "failures_in_the_field.txt";
21
22           # -- OR --
23
24           use Test::LectroTest::Compat
25               regressions => "regressions.txt";
26
27           # -- OR --
28
29           use Test::LectroTest::Compat
30               playback_failures => "regression_suite_for_my_module.txt",
31               record_failures   => "failures_in_the_field.txt";
32

DESCRIPTION

34       Say that LectroTest uncovers a bug in your software by finding a random
35       test case that proves one of your properties to be false.  If you apply
36       a fix for the bug, how can you be sure that LectroTest will re-test the
37       property using the exact same test case that "broke" it before, just to
38       be certain the bug really is fixed?  And how can you be sure that
39       future changes to your code will not reintroduce the same bug without
40       your knowing it?
41
42       For situations like these, LectroTest can record failure-causing test
43       cases to a file, and it can play those test cases back as part of its
44       normal testing strategy.
45
46       The easiest way to take advantage of this feature is to set the
47       regressions parameter when you "use" Test::LectroTest or
48       Test::LectroTest::Compat:
49
50           use Test::LectroTest
51               regressions => "regressions.txt";
52
53       This tells LectroTest to use the file "regressions.txt" for both
54       recording and playing back failures.  If you want to record and play
55       back from separate files, use the record_failures and playback_failures
56       options:
57
58           use Test::LectroTest::Compat
59               playback_failures => "regression_suite_for_my_module.txt",
60               record_failures   => "failures_in_the_field.txt";
61
62       Here is how it works:
63
64       1.  When testing a property named N, LectroTest will check for a play-
65           back file.  If the file exists, LectroTest will search it for test
66           cases associated with N.  If any such test cases exist, LectroTest
67           will play them back before and in addition to performing the usual,
68           random testing of the property.
69
70       2.  When performing the usual, random testing of a property named N, if
71           a failure occurs (i.e., LectroTest finds a counterexample),
72           LectroTest will record the test case that caused the failure to the
73           recording file, associating the test case with the name N.
74
75       NOTE: If you pass any of the recording or playback parameters to
76       Test::LectroTest::Compat, you must have version 0.3500 or greater of
77       Test::LectroTest installed.  (Module authors, update your modules'
78       build dependencies accordingly.)  The Test::LectroTest module itself,
79       however, has always ignored unfamiliar parameters, and thus these
80       options are backward compatible with older versions.
81

SEE ALSO

83       Test::LectroTest gives a quick overview of automatic, specification-
84       based testing with LectroTest.  This module accepts failure recording
85       and play-back options.
86
87       Test::LectroTest::Compat lets you mix LectroTest with the popular
88       family of Test::Builder-based modules such as Test::Simple and
89       Test::More. This module accepts failure recording and play-back
90       options.
91

AUTHOR

93       Tom Moertel (tom@moertel.com)
94

96       Copyright (c) 2004-13 by Thomas G Moertel.  All rights reserved.
97
98       This program is free software; you can redistribute it and/or modify it
99       under the same terms as Perl itself.
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103perl v5.34.0                      2021-07T-e2s3t::LectroTest::RegressionTesting(3)
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