Right assert for testing Doctrine entities in Symfony2

Question

I'm writing some test for my entities and this is the code:

$device = new Device();
$strTool = new StringTools();

$imei = $strTool->randomNumber(17);
$device->setImei($imei);
$device->setDescription($strTool->generateRandomString(50));

$this->em->persist($device);
$this->em->flush();

$devices = $this->em->getRepository('DeviceBundle:Device')->findOneBy(array('imei' => $imei));

$this->assertCount(1, $devices);
$this->assertTrue(is_object($device));

But first test assertCount is failing with this message:

PHPUnit_Framework_Exception: Argument #2 (No Value) of PHPUnit_Framework_Assert::assertCount() must be a countable or traversable

What is the right way to test I get results from DB?

Answer 1

findOneBy return only one element, use findBy instead.

btw, what you are testing here is Doctrine itself. Doctrine is pretty well tested so there is no need for you to do that.