Test2::Tools::Mock(3) Class/Instance mocking for Test2.

DESCRIPTION

Mocking is often an essential part of testing. This library covers some of the most common mocking needs. This plugin is heavily influenced by Mock::Quick, but with an improved API. This plugin is also intended to play well with other plugins in ways Mock::Quick would be unable to.

SYNOPSIS


my $mock = mock 'Some::Class' => (
add => [
new_method => sub { ... },
],
override => [
replace_method => sub { ... },
],
);
Some::Class->new_method(); # Calls the newly injected method
Some::Class->replace_method(); # Calls our replacement method.
$mock->override(...) # Override some more
$mock = undef; # Undoes all the mocking, restoring all original methods.

EXPORTS

DEFAULT

mock
This is a one-stop shop function that delgates to one of the other methods depending on how it is used. If you are not comfortable with a function that has a lot of potential behaviors, you can use one of the other functions directly.
$mock = mocked($object)
$mock = mocked($class)
Check if an object or class is mocked. If it is mocked the $mock object (Test2::Mock) will be returned.
$mock = mock $class => ( ... );
$mock = mock $instance => ( ... )
$mock = mock 'class', $class => ( ... )
These forms delegate to "mock_class()" to mock a package. The third form is to be explicit about what type of mocking you want.
$obj = mock()
$obj = mock { ... }
$obj = mock 'obj', ...;
These forms delegate to "mock_obj()" to create instances of anonymous packages where methods are vivified into existance as needed.
mock $mock => sub { ... }
mock $method => ( ... )
These forms go together, the first form will set $mock as the current mock build, then run the sub. Within the sub you can declare mock specifications using the second form. The first form delgates to "mock_build()".

The second form calls the specified method on the current build. This second form delgates to "mock_do()".

BY REQUEST

DEFINING MOCKS
$obj = mock_obj( ... )
$obj = mock_obj { ... } => ( ... )
$obj = mock_obj sub { ... }
$obj = mock_obj { ... } => sub { ... }
This method lets you quickly generate a blessed object. The object will be an instance of a randomly generated package name. Methods will vivify as read/write accessors as needed.

Arguments can be any method available to Test2::Mock followed by an argument. If the very first argument is a hashref then it will be blessed as your new object.

If you provide a coderef instead of key/value pairs, the coderef will be run to build the mock. (See the ``BUILDING MOCKS'' section).

$mock = mock_class $class => ( ... )
$mock = mock_class $instance => ( ... )
$mock = mock_class ... => sub { ... }
This will create a new instance of Test2::Mock to control the package specified. If you give it a blessed reference it will use the class of the instance.

Arguments can be any method available to Test2::Mock followed by an argument. If the very first argument is a hashref then it will be blessed as your new object.

If you provide a coderef instead of key/value pairs, the coderef will be run to build the mock. (See the ``BUILDING MOCKS'' section).

BUILDING MOCKS

mock_build $mock => sub { ... }
Set $mock as the current build, then run the specified code. $mock will no longer be the current build when the sub is complete.
$mock = mock_building()
Get the current building $mock object.
mock_do $method => $args
Run the specified method on the currently building object.

METHOD GENERATORS

$sub = mock_accessor $field
Generate a read/write accessor for the specified field. This will generate a sub like the following: 

    $sub = sub {
        my $self = shift;
        ($self->{$field}) = @_ if @_;
        return $self->{$field};
    };
$sub = mock_getter $field
Generate a read only accessor for the specified field. This will generate a sub like the following: 

    $sub = sub {
        my $self = shift;
        return $self->{$field};
    };
$sub = mock_setter $field
Generate a write accessor for the specified field. This will generate a sub like the following: 

    $sub = sub {
        my $self = shift;
        ($self->{$field}) = @_;
    };
%pairs = mock_accessors(qw/name1 name2 name3/)
Generates several read/write accessors at once, returns key/value pairs where the key is the field name, and the value is the coderef.
%pairs = mock_getters(qw/name1 name2 name3/)
Generates several read only accessors at once, returns key/value pairs where the key is the field name, and the value is the coderef.
%pairs = mock_setters(qw/name1 name2 name3/)
Generates several write accessors at once, returns key/value pairs where the key is the field name, and the value is the coderef.

MOCK CONTROL OBJECTS

    my $mock = mock(...);

Mock objects are instances of Test2::Mock. See it for their methods.

SOURCE

The source code repository for Test2-Suite can be found at http://github.com/Test-More/Test2-Suite/.

MAINTAINERS

Chad Granum <[email protected]>

AUTHORS

Chad Granum <[email protected]>

COPYRIGHT

Copyright 2016 Chad Granum <[email protected]>.

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

See http://dev.perl.org/licenses/

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