1Test::Class::Load(3)  User Contributed Perl Documentation Test::Class::Load(3)
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NAME

6       Test::Class::Load - Load "Test::Class" classes automatically.
7

VERSION

9       version 0.51
10

SYNOPSIS

12        use Test::Class::Load qw(t/tests t/lib);
13        Test::Class->runtests;
14

EXPORT

16       None.
17

DESCRIPTION

19       "Test::Class" typically uses a helper script to load the test classes.
20       It often looks something like this:
21
22        #!/usr/bin/perl -T
23
24        use strict;
25        use warnings;
26
27        use lib 't/tests';
28
29        use MyTest::Foo;
30        use MyTest::Foo::Bar;
31        use MyTest::Foo::Baz;
32
33        Test::Class->runtests;
34
35       This causes a problem, though.  When you're writing a test class, it's
36       easy to forget to add it to the helper script.  Then you run your huge
37       test suite and see that all tests pass, even though you don't notice
38       that it didn't run your new test class.  Or you delete a test class and
39       you forget to remove it from the helper script.
40
41       "Test::Class::Load" automatically finds and loads your test classes for
42       you. There is no longer a need to list them individually.
43

BASIC USAGE

45       Using "Test::Class::Load" is as simple as this:
46
47        #!/usr/bin/perl -T
48
49        use strict;
50        use warnings;
51
52        use Test::Class::Load 't/tests';
53
54        Test::Class->runtests;
55
56       That will search through all files in the "t/tests" directory and
57       automatically load anything which ends in ".pm". You should only put
58       test classes in those directories.
59
60       If you have test classes in more than one directory, that's OK. Just
61       list all of them in the import list.
62
63        use Test::Class::Load qw<
64          t/customer
65          t/order
66          t/inventory
67        >;
68        Test::Class->runtests;
69

ADVANCED USAGE

71       Here's some examples of advanced usage of "Test::Class::Load".
72
73   FILTER LOADED CLASSES
74       You can redefine the filtering criteria, that is, decide what classes
75       are picked up and what others are not. You do this simply by
76       subclassing "Test::Class::Load" overriding the "is_test_class()"
77       method. You might want to do this to only load modules which inherit
78       from "Test::Class", or anything else for that matter.
79
80       is_test_class
81             $is_test_class = $class->is_test_class( $file, $directory )
82
83           Returns true if $file in $directory should be considered a test
84           class and be loaded by Test::Class::Load. The default filter simply
85           returns true if $file ends with ".pm"
86
87       For example:
88
89         use strict;
90         use warnings;
91
92         package My::Loader;
93         use base qw( Test::Class::Load );
94
95         # Overriding this selects what test classes
96         # are considered by T::C::Load
97         sub is_test_class {
98             my ( $class, $file, $dir ) = @_;
99
100             # return unless it's a .pm (the default)
101             return unless $class->SUPER::is_test_class( $file, $dir );
102
103             # and only allow .pm files with "Good" in their filename
104             return $file =~ m{Good};
105         }
106
107         1;
108
109   CUSTOMIZING TEST RUNS
110       One problem with this style of testing is that you run all of the tests
111       every time you need to test something.  If you want to run only one
112       test class, it's problematic.  The easy way to do this is to change
113       your helper script by deleting the "runtests" call:
114
115        #!/usr/bin/perl -T
116
117        use strict;
118        use warnings;
119
120        use Test::Class::Load 't/tests';
121
122       Then, just make sure that all of your test classes inherit from your
123       own base class which runs the tests for you.  It might looks something
124       like this:
125
126        package My::Test::Class;
127
128        use strict;
129        use warnings;
130
131        use base 'Test::Class';
132
133        INIT { Test::Class->runtests } # here's the magic!
134
135        1;
136
137       Then you can run an individual test class by using the "prove" utility,
138       tell it the directory of the test classes and the name of the test
139       package you wish to run:
140
141        prove -lv -It/tests Some::Test::Class
142
143       You can even automate this by binding it to a key in "vim":
144
145        noremap ,t  :!prove -lv -It/tests %<CR>
146
147       Then you can just type ",t" ('comma', 'tee') and it will run the tests
148       for your test class or the tests for your test script (if you're using
149       a traditional "Test::More" style script).
150
151       Of course, you can still run your helper script with "prove", "make
152       test" or "./Build test" to run all of your test classes.
153
154       If you do that, you'll have to make sure that the "-I" switches point
155       to your test class directories.
156

SECURITY

158       "Test::Class::Load" is taint safe.  Because we're reading the class
159       names from the directory structure, they're marked as tainted when
160       running under taint mode.  We use the following ultra-paranoid bit of
161       code to untaint them. Please file a bug report if this is too
162       restrictive.
163
164        my ($package) = $_package =~ /^([[:word:]]+(?:::[[:word:]]+)*)$/;
165

SUPPORT

167       See Test::Class
168

AUTHOR

170       Curtis "Ovid" Poe, "<ovid@cpan.org>"
171

ACKNOWLEDGMENTS

173       Thanks to David Wheeler for the idea and Adrian Howard for
174       "Test::Class".
175

177       Copyright 2006 Curtis "Ovid" Poe, all rights reserved.
178
179       This program is free software; you can redistribute it and/or modify it
180       under the same terms as Perl itself.
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184perl v5.34.0                      2021-07-23              Test::Class::Load(3)
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