1Test::Stream::Plugin::MUoscekr(3C)ontributed Perl DocumeTnetsatt:i:oSntream::Plugin::Mock(3)
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6 Test::Stream::Plugin::Mock - Class/Instance mocking for Test::Stream.
7
9 This distribution is deprecated in favor of Test2, Test2::Suite, and
10 Test2::Workflow.
11 See Test::Stream::Manual::ToTest2 for a conversion guide.
13
15 Mocking is often an essential part of testing. This library covers some
16 of the most common mocking needs. This plugin is heavily influenced by
17 Mock::Quick, but with an improved API. This plugin is also intended to
18 play well with other plugins in ways Mock::Quick would be unable to.
19
21 my $mock = mock 'Some::Class' => (
22 add => [
23 new_method => sub { ... },
24 ],
25 override => [
26 replace_method => sub { ... },
27 ],
28 );
29 Some::Class->new_method(); # Calls the newly injected method
31 Some::Class->replace_method(); # Calls our replacement method.
32 $mock->override(...) # Override some more
34 $mock = undef; # Undoes all the mocking, restoring all original methods.
36
38 This plugin plays nicely with Test::Stream::Plugin::Spec. Mocks are
39 treated as a "before_each" if you use the mock functions without saving
40 the returned object. The mock will also apply to any describe block in
41 which they are defined.
42 describe stuff => sub {
44 # The mock specification
45 mock 'My::Class' => (...);
46 # Mock applies here, inside the describe block
48 tests foo => sub {
50 # Mock applies here inside any nested blocks, even though they run
51 # later
52 };
53 };
54 # Mock does not apply out here
56
58 DEFAULT
59 mock
60 This is a 1-stop shop function that delgates to one of the other
61 methods depending on how it is used. If you are not comfortable
62 with a function that has a lot of potential behaviors, you can use
63 one of the other functions directly.
64 $mock = mocked($object)
66 $mock = mocked($class)
67 Check if an object or class is mocked. If it is mocked the $mock
68 object (Test::Stream::Mock) will be returned.
69 $mock = mock $class => ( ... );
71 $mock = mock $instance => ( ... )
72 $mock = mock 'class', $class => ( ... )
73 These forms delegate to "mock_class()" to mock a package. The third
74 form is to be explicit about what type of mocking you want.
75 $obj = mock()
77 $obj = mock { ... }
78 $obj = mock 'obj', ...;
79 These forms delegate to "mock_obj()" to create instances of
80 anonymous packages where methods are vivified into existance as
81 needed.
82 mock $mock => sub { ... }
84 mock $method => ( ... )
85 These forms go together, the first form will set $mock as the
86 current mock build, then run the sub. Within the sub you can
87 declare mock specifications using the second form. The first form
88 delgates to "mock_build()".
89 The second form calls the specified method on the current build.
91 This second form delgates to "mock_do()".
92 BY REQUEST
94 DEFINING MOCKS
95 $obj = mock_obj( ... )
97 $obj = mock_obj { ... } => ( ... )
98 $obj = mock_obj sub { ... }
99 $obj = mock_obj { ... } => sub { ... }
100 This method lets you quickly generate a blessed object. The object
101 will be an instance of a randomly generated package name. Methods
102 will vivify as read/write accessors as needed.
103 Arguments can be any method available to Test::Stream::Mock
105 followed by an argument. If the very first argument is a hashref
106 then it will be blessed as your new object.
107 If you provide a coderef instead of key/value pairs, the coderef
109 will be run to build the mock. (See the "BUILDING MOCKS" section).
110 $mock = mock_class $class => ( ... )
112 $mock = mock_class $instance => ( ... )
113 $mock = mock_class ... => sub { ... }
114 This will create a new instance of Test::Stream::Mock to control
115 the package specified. If you give it a blessed reference it will
116 use the class of the instance.
117 Arguments can be any method available to Test::Stream::Mock
119 followed by an argument. If the very first argument is a hashref
120 then it will be blessed as your new object.
121 If you provide a coderef instead of key/value pairs, the coderef
123 will be run to build the mock. (See the "BUILDING MOCKS" section).
124 BUILDING MOCKS
126 mock_build $mock => sub { ... }
128 Set $mock as the current build, then run the specified code. $mock
129 will no longer be the current build when the sub is complete.
130 $mock = mock_building()
132 Get the current building $mock object.
133 mock_do $method => $args
135 Run the specified method on the currently building object.
136 METHOD GENERATORS
138 $sub = mock_accessor $field
140 Generate a read/write accessor for the specified field. This will
141 generate a sub like the following:
142 $sub = sub {
144 my $self = shift;
145 ($self->{$field}) = @_ if @_;
146 return $self->{$field};
147 };
148 $sub = mock_getter $field
150 Generate a read obly accessor for the specified field. This will
151 generate a sub like the following:
152 $sub = sub {
154 my $self = shift;
155 return $self->{$field};
156 };
157 $sub = mock_setter $field
159 Generate a write accessor for the specified field. This will
160 generate a sub like the following:
161 $sub = sub {
163 my $self = shift;
164 ($self->{$field}) = @_;
165 };
166 %pairs = mock_accessors(qw/name1 name2 name3/)
168 Generates several read/write accessors at once, returns key/value
169 pairs where the key is the field name, and the value is the
170 coderef.
171 %pairs = mock_getters(qw/name1 name2 name3/)
173 Generates several read only accessors at once, returns key/value
174 pairs where the key is the field name, and the value is the
175 coderef.
176 %pairs = mock_setters(qw/name1 name2 name3/)
178 Generates several write accessors at once, returns key/value pairs
179 where the key is the field name, and the value is the coderef.
180
182 my $mock = mock(...);
183 Mock objects are instances of Test::Stream::Mock, see it for their
185 methods.
186
188 The source code repository for Test::Stream can be found at
189 http://github.com/Test-More/Test-Stream/.
190
192 Chad Granum <exodist@cpan.org>
193
195 Chad Granum <exodist@cpan.org>
196
198 Copyright 2015 Chad Granum <exodist7@gmail.com>.
199 This program is free software; you can redistribute it and/or modify it
201 under the same terms as Perl itself.
202 See http://dev.perl.org/licenses/
204perl v5.30.1 2020-01-30 Test::Stream::Plugin::Mock(3)