getRepository is null in phpunit test - symfony

Question

I'm running phpunit tests on some classes and I get this error
Call to a member function getRepository() on null in
src/MyApp/MyBundle/CopyList.php on line 429
At that line is
$list = $this->em->getRepository('MyAppMyBundle:CopyList')->findByName($task);
from
namespace MyApp\MyBundle\Classes\Action;
use Symfony\Component\HttpFoundation\Session;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\ParameterBag;
use MyApp\MyBundle\Entity\CopyVirtualList;
use Doctrine\ORM\EntityManager;
class CopyList extends Action
{
private $em;
public function __construct(EntityManager $em)
{
$this->em = $em;
}
public function __clone() {
$task = $this->getTask();
$this->__copy($task);
}
public function __copy($task)
{
$list = $this->em->getRepository('MyAppMyBundle:CopyList')->findByName($task);
if (!$list) {
$list = new CopyVirtualList();
$this->em->persist($list);
$this->em->flush();
}
}
}
which is being called from the line
$clone = clone $container;
in
namespace tests\src\MyApp\MyBundle\Classes;
use Symfony\Component\HttpFoundation\Request;
abstract class TaskContextContainerTestCase extends TestCase
{
public function testCloning()
{
$container = $this->createInstance();
$container->setImmutable(true);
$this->assertTrue($container->isImmutable());
$clone = clone $container;
$this->assertNotEquals($container, $clone);
$this->assertFalse($clone->isImmutable());
}
protected function createInstance()
{
$task = $this->getMockBuilder('MyApp\MyBundle\Model\TaskContext')
->disableOriginalConstructor()
->getMockForAbstractClass();
$container = $task->createElement(
$this->getContainerKind(),
$this->getContainerType()
);
$container->setContext($task);
return $container;
}
}
TestCase is
namespace tests\src\MyApp\MyBundle;
use MyApp\Environment as Env;
require_once dirname(__DIR__) . '/../../../../app/AppKernel.php';
class TestCase extends \PHPUnit_Framework_TestCase
{
protected function setUp()
{
try {
$kernel = new \AppKernel('test', true);
$kernel->boot();
new \MyApp\Environment(); // init single env-instance
Env::getInstance()->setContainer($kernel->getContainer());
} catch (\Exception $e) {
}
parent::setUp();
}
}
And
namespace MyApp\MyBundle\Tests\Units\Classes\Action;
use MyApp\MyBundle\Classes\Action\CopyList;
use tests\src\MyApp\MyBundle\Classes\Action\ActionTestCase as TestCase;
class CopyListTest extends TestCase {
private $object;
public function setUp()
{
parent::setUp();
$task = $this->getMockBuilder('MyApp\MyBundle\Model\TaskContext')
->disableOriginalConstructor()
->getMock();
$this->object = new CopyList($task);
}
public function testCreateInstance() {
$task = $this->getMockBuilder('MyApp\MyBundle\Model\TaskContext')
->disableOriginalConstructor()
->getMockForAbstractClass();
$container = $task->createElement($this->getContainerKind(), $this->getContainerType());
$container->setContext($task);
return $container;
}
public function testCloning()
{
$container = $this->createInstance();
$container->setImmutable(true);
$this->assertTrue($container->isImmutable());
$clone = clone $container;
$this->assertNotEquals($container, $clone);
$this->assertFalse($clone->isImmutable());
}
}
Can anyone point me in the right direction?