Symfony Container Mocks

This container enables you to mock services in the Symfony dependency injection container. It is particularly useful in functional tests.

Features

• Can replace any Symfony service or parameter
• Automatically detects service class from service definition
• Can be used with any mocking framework
• Compatible with Symfony versions 2.7 - 3.4
• Works on all supported version of PHP

OTB supported mocking frameworks

• phpspec/prophecy

Installation

Add SymfonyContainerMocks using composer:

composer require "ramunasd/symfony-container-mocks"

or edit your composer.json:

{
    "require": {
        "ramunasd/symfony-container-mocks": "*"
    }
}

Replace base container class for test environment in app/AppKernel.php

<?php

use Symfony\Component\HttpKernel\Kernel;
use Symfony\Component\Config\Loader\LoaderInterface;
use RDV\SymfonyContainerMocks\DependencyInjection\TestKernelTrait;

class AppKernel extends Kernel
{
    // use special container when env=test
    use TestKernelTrait;
    
    public function registerBundles()
    {
        return [
            // bundles
        ];
    }
    
    public function registerContainerConfiguration(LoaderInterface $loader)
    {
    }
}

And clear application cache.

Examples

Inject mocked service

<?php

namespace Acme\Bundle\AcmeBundle\Tests\Controller;

use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
use Acme\Bundle\AcmeBundle\Service\Custom;

class AcmeControllerTest extends WebTestCase
{
    /**
     * @var \Symfony\Bundle\FrameworkBundle\Client $client
     */
    private $client;

    public function setUp()
    {
        parent::setUp();

        $this->client = static::createClient();
    }

    public function tearDown()
    {
        $this->client->getContainer()->tearDown();
        $this->client = null;

        parent::tearDown();
    }

    public function testSomethingWithMockedService()
    {
        $this->client->getContainer()->prophesize('acme.service.custom', Custom::class)
            ->someMethod([])
            ->willReturn(false)
            ->shouldBeCalledTimes(2);

        // ...
    }
}

Inject automatically mocked service

feature works only with flag "debug" enabled.

$mock = $this->client->getContainer()->prophesize('acme.service.custom');
$mock
    ->myMethod()
    ->willReturn(true);

Other mocking frameworks

// create stub
$mock = $this->getMock(Custom::class);

// inject service mock
self::$kernel->getContainer()->setMock('acme.service.custom', $mock);

// reset container state
self::$kernel->getContainer()->unMock('acme.service.custom');

Set specific framework parameter

// set custom value during test
self::$kernel->getContainer()->setMockedParameter('acme.service.parameter1', 'customValue1');

// trigger service, assert results

// reset all parameters to original values
self::$kernel->getContainer()->clearMockedParameters();

Things TO DO

• Symfony 4.x support
• PSR-11 adoption

Similar/Related projects

• https://github.com/jakzal/phpunit-injector - inject Symfony services into PHPUnit test cases