1Test::Object(3)       User Contributed Perl Documentation      Test::Object(3)
2
3
4

NAME

6       Test::Object - Thoroughly testing objects via registered handlers
7

VERSION

9       version 0.08
10

SYNOPSIS

12         ###################################################################
13         # In your test module, register test handlers again class names   #
14         ###################################################################
15
16         package My::ModuleTester;
17
18         use Test::More;
19         use Test::Object;
20
21         # Foo::Bar is a subclass of Foo
22         Test::Object->register(
23               class => 'Foo',
24               tests => 5,
25               code  => \&foo_ok,
26               );
27         Test::Object->register(
28               class => 'Foo::Bar',
29               # No fixed number of tests
30               code  => \&foobar_ok,
31               );
32
33         sub foo_ok {
34               my $object = shift;
35               ok( $object->foo, '->foo returns true' );
36         }
37
38         sub foobar_ok {
39               my $object = shift;
40               is( $object->foo, 'bar', '->foo returns "bar"' );
41         }
42
43         1;
44
45
46
47         ###################################################################
48         # In test script, test object against all registered classes      #
49         ###################################################################
50
51         #!/usr/bin/perl -w
52
53         use Test::More 'no_plan';
54         use Test::Object;
55         use My::ModuleTester;
56
57         my $object = Foo::Bar->new;
58         isa_ok( $object, 'Foo::Bar' );
59         object_ok( $object );
60

DESCRIPTION

62       In situations where you have deep trees of classes, there is a common
63       situation in which you test a module 4 or 5 subclasses down, which
64       should follow the correct behaviour of not just the subclass, but of
65       all the parent classes.
66
67       This should be done to ensure that the implementation of a subclass has
68       not somehow "broken" the object's behaviour in a more general sense.
69
70       "Test::Object" is a testing package designed to allow you to easily
71       test what you believe is a valid object against the expected behaviour
72       of all of the classes in its inheritance tree in one single call.
73
74       To do this, you "register" tests (in the form of CODE or function
75       references) with "Test::Object", with each test associated with a
76       particular class.
77
78       When you call "object_ok" in your test script, "Test::Object" will
79       check the object against all registered tests. For each class that your
80       object responds to "$object->isa($class)" for, the appropriate testing
81       function will be called.
82
83       Doing it this way allows adapter objects and other things that respond
84       to "isa" differently that the default to still be tested against the
85       classes that it is advertising itself as correctly.
86
87       This also means that more than one test might be "counted" for each
88       call to "object_ok". You should account for this correctly in your
89       expected test count.
90

SUPPORT

92       Bugs should be submitted via the CPAN bug tracker, located at
93
94       <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Test-Object>
95
96       For other issues, contact the author.
97

AUTHOR

99       Adam Kennedy <adamk@cpan.org>
100

SEE ALSO

102       <http://ali.as/>, Test::More, Test::Builder::Tester, Test::Class
103

105       Copyright 2005, 2006 Adam Kennedy.
106
107       This program is free software; you can redistribute it and/or modify it
108       under the same terms as Perl itself.
109
110       The full text of the license can be found in the LICENSE file included
111       with this module.
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115perl v5.36.0                      2023-01-20                   Test::Object(3)
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