Test2::Tools::Mock − Class/Instance mocking for Test2.
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.
my $mock = mock
'Some::Class' => (
track => $BOOL, # Enable/Disable tracking on subs defined
below
add => [
new_method => sub { ... },
],
override => [
replace_method => sub { ... },
],
set => [
replace_or_inject => sub { ... },
],
track => $bool, # enable/disable tracking again to affect
mocks made after this point
..., # Argument keys may be repeated
);
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.
my $simple_mock = mock {} => (
add => [
is_active => sub { ... }
]
);
$simple_mock−>is_active(); # Calls our newly mocked
method.
mock
This is a one-stop shop function that delegates to one of the other methods depending on how it is used. If you are not comfortable with a function that has a lot of potential behaviors, you can use one of the other functions directly.
@mocks = mocked($object)
@mocks = mocked($class)
Check if an object or class is mocked. If it is mocked the $mock object(s) (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 existence 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 delegates to mock_build().
The second form calls the specified method on the current build. This second form delegates to mock_do().
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.
my $mock = mock(...);
Mock objects are instances of Test2::Mock. See it for their methods.
The source code repository for Test2−Suite can be found at <https://github.com/Test−More/Test2−Suite/>.
Chad Granum <[email protected]>
Chad Granum <[email protected]>
Copyright 2018 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 <https://dev.perl.org/licenses/>