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How can I test a service in symfony2?

Posted by: admin November 29, 2017 Leave a comment


Since I’m working with services, this question may end up being an issue with dependency-injection in symfony. Currently I’m trying to test one simple feature in my service via phpunit test and I keep getting the following error:

PHP Catchable fatal error:  Argument 1 passed to Caremonk\MainSiteBundle\Tests\Services\GeoTest::__construct() must be an instance of Caremonk\MainSiteBundle\Tests\Services\Geo, none given, called in /usr/share/nginx/html/caremonk/vendor/phpunit/phpunit/PHPUnit/Framework/TestSuite.php on line 473 and defined in /usr/share/nginx/html/caremonk/src/Caremonk/MainSiteBundle/Tests/Services/GeoTest.php on line 14

From the error, it is obvious that I am trying create an instance of my service and the correct argument is not being passed, so bellow is my services.yml file:

    caremonk_main_site.geo.class: Caremonk\MainSiteBundle\Services\Geo
    caremonk_main_site.geo_test.class: Caremonk\MainSiteBundle\Tests\Services\GeoTest

        class: %caremonk_main_site.geo.class%
        arguments: []

        class: %caremonk_main_site.geo_test.class%
        arguments: ["@geo"]

Bellow is my service that I’ve built:

namespace Caremonk\MainSiteBundle\Services;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpFoundation\Request;

class Geo extends Controller

    public $pi80;
    public $latRad;
    public $lngRad;

    public function __construct()
        $this->pi80 = M_PI / 180;

    // Takes longitude and latitude and converts them into their respective radians
    // We also set our class properties to these values
    public function setCoordinates($lat,$lng)
        $this->latRad = $lat * $this->pi80;
        $this->lngRad = $lng * $this->pi80;

    public function distance($lat2, $lng2, $miles = true)
        $lat1 = $this->latRad;
        $lng1 = $this->lngRad;
        $lat2 *= $pi80;
        $lng2 *= $pi80;

        $r = 6372.797; // mean radius of Earth in km
        $dlat = ($lat2 - $lat1)/2;
        $dlng = ($lng2 - $lng1)/2;
        $a = sin($dlat) * sin($dlat) + cos($lat1) * cos($lat2) * sin($dlng) * sin($dlng);
        $c = 2 * atan2(sqrt($a), sqrt(1 - $a));
        $km = $r * $c;

        return ($miles ? ($km * 0.621371192) : $km);

    // This function returns the minimum latitude in radians
    public function min_lat($lat,$lng,$dis)
         $dis /= .62137119;
         $ratio = $dis/6372.797;
         return asin(sin($lat)*cos($ratio) + cos($lat)*sin($ratio)*cos(M_PI));

    // This function returns the max latitude in radians
    public function max_lat($lat,$lng,$dis)
         $dis /= .62137119;
         $ratio = $dis/6372.797;
         return asin(sin($lat)*cos($ratio) + cos($lat)*sin($ratio)*cos(0));

    // This function returns max longitude in radians
    public function max_lon($lat,$lng,$dis)
         $dis /= .62137119;
         $ratio = $dis/6372.797;
         return $lng + atan2(sin(M_PI/2)*sin($ratio)*cos($lat),cos($ratio)-sin($lat)*sin($lat));

    // This function returns min longitude in radians
    public function min_lon($lat,$lng,$dis)
         $dis /= .62137119;
         $ratio = $dis/6372.797;
         return $lng + atan2(sin(M_PI*1.5)*sin($ratio)*cos($lat),cos($ratio)-sin($lat)*sin($lat));

My test file is shown here:


namespace Caremonk\MainSiteBundle\Tests\Services;

use Caremonk\MainSiteBundle\Services;
use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
use Symfony\Component\DependencyInjection\ContainerBuilder;

class GeoTest extends WebTestCase
    public $geo; 

    public function __construct(Geo $geo)
        $this->geo = $geo;

    public function testSetCoordinates()
        //print $geoService->distance(6,5);

Lastly, my services are registered bellow in the app/config.yml file:

    - { resource: parameters.yml }
    - { resource: security.yml }
    - { resource: "@CaremonkMainSiteBundle/Resources/config/services.yml" }
# Other config.yml stuff

I don’t get dependency that well and I’m hoping that my interpretation of it as shown in this post is close to what symfony had in mind. Please let me know what I’m doing wrong so I can test my service.


In your test case, you’re not going to get anything in your constructor – you can set up the object you want to test in a setupBeforeClass or setup method, e.g.

public static function setUpBeforeClass()
     //start the symfony kernel
     $kernel = static::createKernel();

     //get the DI container
     self::$container = $kernel->getContainer();

     //now we can instantiate our service (if you want a fresh one for
     //each test method, do this in setUp() instead
     self::$geo = self::$container->get('geo');

(Note also you don’t need to set up your test classes as services either, so you can remove your geo_test service from services.yml)

Once you’ve done that, you should be able to run your test case with something like

cd /root/of/project
phpunit -c app src/Caremonk/MainSiteBundle/Tests/Services/GeoTest.php


If your are not going to test controllers (with client) your test class should just extend KernelTestCase (Symfony\Bundle\FrameworkBundle\Test). To boot the kernel & get services add sth like this in your test setup:

public function setUp()
    $this->geo = static::$kernel->getContainer()->get('geo');

More docs:


If you do not want to make tests in an application but in a standalone bundle, I would suggest you to take a look at the very detailed answer of this question.