PHPUnit Integration

Mockery was designed as a simple-to-use standalone mock object framework, so its need for integration with any testing framework is entirely optional. To integrate Mockery, we need to define a tearDown() method for our tests containing the following (we may use a shorter \Mockery namespace alias):

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

This static call cleans up the Mockery container used by the current test, and run any verification tasks needed for our expectations.

For some added brevity when it comes to using Mockery, we can also explicitly use the Mockery namespace with a shorter alias. For example:

use \Mockery as m;

class SimpleTest extends \PHPUnit\Framework\TestCase
{
    public function testSimpleMock() {
        $mock = m::mock('simplemock');
        $mock->shouldReceive('foo')->with(5, m::any())->once()->andReturn(10);

        $this->assertEquals(10, $mock->foo(5));
    }

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

Mockery ships with an autoloader so we don’t need to litter our tests with require_once() calls. To use it, ensure Mockery is on our include_path and add the following to our test suite’s Bootstrap.php or TestHelper.php file:

require_once 'Mockery/Loader.php';
require_once 'Hamcrest/Hamcrest.php';

$loader = new \Mockery\Loader;
$loader->register();

If we are using Composer, we can simplify this to including the Composer generated autoloader file:

require __DIR__ . '/../vendor/autoload.php'; // assuming vendor is one directory up

Caution

Prior to Hamcrest 1.0.0, the Hamcrest.php file name had a small “h” (i.e. hamcrest.php). If upgrading Hamcrest to 1.0.0 remember to check the file name is updated for all your projects.)

To integrate Mockery into PHPUnit and avoid having to call the close method and have Mockery remove itself from code coverage reports, have your test case extends the \Mockery\Adapter\Phpunit\MockeryTestCase:

class MyTest extends \Mockery\Adapter\Phpunit\MockeryTestCase
{

}

An alternative is to use the supplied trait:

class MyTest extends \PHPUnit\Framework\TestCase
{
    use \Mockery\Adapter\Phpunit\MockeryPHPUnitIntegration;
}

Extending MockeryTestCase or using the MockeryPHPUnitIntegration trait is the recommended way of integrating Mockery with PHPUnit, since Mockery 1.0.0.

PHPUnit listener

Before the 1.0.0 release, Mockery provided a PHPUnit listener that would call Mockery::close() for us at the end of a test. This has changed significantly since the 1.0.0 version.

Now, Mockery provides a PHPUnit listener that makes tests fail if Mockery::close() has not been called. It can help identify tests where we’ve forgotten to include the trait or extend the MockeryTestCase.

If we are using PHPUnit’s XML configuration approach, we can include the following to load the TestListener:

<listeners>
    <listener class="\Mockery\Adapter\Phpunit\TestListener"></listener>
</listeners>

Make sure Composer’s or Mockery’s autoloader is present in the bootstrap file or we will need to also define a “file” attribute pointing to the file of the TestListener class.

Caution

The TestListener will only work for PHPUnit 6+ versions.

For PHPUnit versions 5 and lower, the test listener does not work.

If we are creating the test suite programmatically we may add the listener like this:

// Create the suite.
$suite = new PHPUnit\Framework\TestSuite();

// Create the listener and add it to the suite.
$result = new PHPUnit\Framework\TestResult();
$result->addListener(new \Mockery\Adapter\Phpunit\TestListener());

// Run the tests.
$suite->run($result);

Caution

PHPUnit provides a functionality that allows tests to run in a separated process, to ensure better isolation. Mockery verifies the mocks expectations using the Mockery::close() method, and provides a PHPUnit listener, that automatically calls this method for us after every test.

However, this listener is not called in the right process when using PHPUnit’s process isolation, resulting in expectations that might not be respected, but without raising any Mockery\Exception. To avoid this, we cannot rely on the supplied Mockery PHPUnit TestListener, and we need to explicitly call Mockery::close. The easiest solution to include this call in the tearDown() method, as explained previously.