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Mockery is a simple yet flexible PHP mock object framework for use in unit testing with PHPUnit, PHP...

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Mockery

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Mockery is a simple yet flexible PHP mock object framework for use in unit testing with PHPUnit, PHPSpec or any other testing framework. Its core goal is to offer a test double framework with a succinct API capable of clearly defining all possible object operations and interactions using a human readable Domain Specific Language (DSL). Designed as a drop in alternative to PHPUnit's phpunit-mock-objects library, Mockery is easy to integrate with PHPUnit and can operate alongside phpunit-mock-objects without the World ending.

Mockery is released under a New BSD License.

Installation

To install Mockery, run the command below and you will get the latest version

composer require --dev mockery/mockery

Documentation

In older versions, this README file was the documentation for Mockery. Over time we have improved this, and have created an extensive documentation for you. Please use this README file as a starting point for Mockery, but do read the documentation to learn how to use Mockery.

The current version can be seen at docs.mockery.io.

PHPUnit Integration

Mockery ships with some helpers if you are using PHPUnit. You can extend the[

Mockery\Adapter\Phpunit\MockeryTestCase

](https://github.com/mockery/mockery/blob/master/library/Mockery/Adapter/Phpunit/MockeryTestCase.php)class instead of

PHPUnit\Framework\TestCase

, or if you are already using a custom base class for your tests, take a look at the traits available in the[

Mockery\Adapter\Phpunit

](https://github.com/mockery/mockery/blob/master/library/Mockery/Adapter/Phpunit) namespace.

Test Doubles

Test doubles (often called mocks) simulate the behaviour of real objects. They are commonly utilised to offer test isolation, to stand in for objects which do not yet exist, or to allow for the exploratory design of class APIs without requiring actual implementation up front.

The benefits of a test double framework are to allow for the flexible generation and configuration of test doubles. They allow the setting of expected method calls and/or return values using a flexible API which is capable of capturing every possible real object behaviour in way that is stated as close as possible to a natural language description. Use the

Mockery::mock

method to create a test double.

$double = Mockery::mock();

If you need Mockery to create a test double to satisfy a particular type hint, you can pass the type to the

mock

method.

class Book {} interface BookRepository { function find($id): Book; function findAll(): array; function add(Book $book): void; } $double = Mockery::mock(BookRepository::class);

A detailed explanation of creating and working with test doubles is given in the documentation, Creating test doublessection.

Method Stubs 🎫

A method stub is a mechanism for having your test double return canned responses to certain method calls. With stubs, you don't care how many times, if at all, the method is called. Stubs are used to provide indirect input to the system under test.

$double-\>allows()-\>find(123)-\>andReturns(new Book()); $book = $double-\>find(123);

If you have used Mockery before, you might see something new in the example above β€” we created a method stub using

allows

, instead of the "old"

shouldReceive

syntax. This is a new feature of Mockery v1, but fear not, the trusty ol'

shouldReceive

is still here.

For new users of Mockery, the above example can also be written as:

$double-\>shouldReceive('find')-\>with(123)-\>andReturn(new Book()); $book = $double-\>find(123);

If your stub doesn't require specific arguments, you can also use this shortcut for setting up multiple calls at once:

$double-\>allows(["findAll" =\> [new Book(), new Book()], ]);

or

$double-\>shouldReceive('findAll') -\>andReturn([new Book(), new Book()]);

You can also use this shortcut, which creates a double and sets up some stubs in one call:

$double = Mockery::mock(BookRepository::class, ["findAll" =\> [new Book(), new Book()], ]);

Method Call Expectations πŸ“²

A Method call expectation is a mechanism to allow you to verify that a particular method has been called. You can specify the parameters and you can also specify how many times you expect it to be called. Method call expectations are used to verify indirect output of the system under test.

$book = new Book(); $double = Mockery::mock(BookRepository::class); $double-\>expects()-\>add($book);

During the test, Mockery accept calls to the

add

method as prescribed. After you have finished exercising the system under test, you need to tell Mockery to check that the method was called as expected, using the

Mockery::close

method. One way to do that is to add it to your

tearDown

method in PHPUnit.

public function tearDown() { Mockery::close(); }

The

expects()

method automatically sets up an expectation that the method call (and matching parameters) is called once and once only. You can choose to change this if you are expecting more calls.

$double-\>expects()-\>add($book)-\>twice();

If you have used Mockery before, you might see something new in the example above β€” we created a method expectation using

expects

, instead of the "old"

shouldReceive

syntax. This is a new feature of Mockery v1, but same as with

accepts

in the previous section, it can be written in the "old" style.

For new users of Mockery, the above example can also be written as:

$double-\>shouldReceive('find') -\>with(123) -\>once() -\>andReturn(new Book()); $book = $double-\>find(123);

A detailed explanation of declaring expectations on method calls, please read the documentation, the Expectation declarationssection. After that, you can also learn about the new

allows

and

expects

methods in the Alternative shouldReceive syntaxsection.

It is worth mentioning that one way of setting up expectations is no better or worse than the other. Under the hood,

allows

and

expects

are doing the same thing as

shouldReceive

, at times in "less words", and as such it comes to a personal preference of the programmer which way to use.

Test Spies πŸ•΅οΈ

By default, all test doubles created with the

Mockery::mock

method will only accept calls that they have been configured to

allow

or

expect

(or in other words, calls that they

shouldReceive

). Sometimes we don't necessarily care about all of the calls that are going to be made to an object. To facilitate this, we can tell Mockery to ignore any calls it has not been told to expect or allow. To do so, we can tell a test double

shouldIgnoreMissing

, or we can create the double using the

Mocker::spy

shortcut.

// $double = Mockery::mock()-\>shouldIgnoreMissing(); $double = Mockery::spy(); $double-\>foo(); // null $double-\>bar(); // null

Further to this, sometimes we want to have the object accept any call during the test execution and then verify the calls afterwards. For these purposes, we need our test double to act as a Spy. All mockery test doubles record the calls that are made to them for verification afterwards by default:

$double-\>baz(123); $double-\>shouldHaveReceived()-\>baz(123); // null $double-\>shouldHaveReceived()-\>baz(12345); // Uncaught Exception Mockery\Exception\InvalidCountException...

Please refer to the Spies section of the documentation to learn more about the spies.

Utilities πŸ”Œ

Global Helpers

Mockery ships with a handful of global helper methods, you just need to ask Mockery to declare them.

Mockery::globalHelpers(); $mock = mock(Some::class); $spy = spy(Some::class); $spy-\>shouldHaveReceived() -\>foo(anyArgs());

All of the global helpers are wrapped in a

!function\_exists

call to avoid conflicts. So if you already have a global function called

spy

, Mockery will silently skip the declaring its own

spy

function.

Testing Traits

As Mockery ships with code generation capabilities, it was trivial to add functionality allowing users to create objects on the fly that use particular traits. Any abstract methods defined by the trait will be created and can have expectations or stubs configured like normal Test Doubles.

trait Foo { function foo() { return $this-\>doFoo(); } abstract function doFoo(); } $double = Mockery::mock(Foo::class); $double-\>allows()-\>doFoo()-\>andReturns(123); $double-\>foo(); // int(123)

Versioning

The Mockery team attempts to adhere to Semantic Versioning, however, some of Mockery's internals are considered private and will be open to change at any time. Just because a class isn't final, or a method isn't marked private, does not mean it constitutes part of the API we guarantee under the versioning scheme.

Alternative Runtimes

Mockery will attempt to continue support HHVM, but will not make any guarantees.

A new home for Mockery

⚠️️ Update your remotes! Mockery has transferred to a new location. While it was once at

padraic/mockery

, it is now at

mockery/mockery

. While your existing repositories will redirect transparently for any operations, take some time to transition to the new URL.

sh $ git remote set-url upstream https://github.com/mockery/mockery.git

Replace

upstream

with the name of the remote you use locally;

upstream

is commonly used but you may be using something else. Run

git remote -v

to see what you're actually using.

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