public function testFolderGetterAndSetter() { $subFolder = $this->getMock('Oro\\Bundle\\EmailBundle\\Entity\\EmailFolder'); $subFolder2 = $this->getMock('Oro\\Bundle\\EmailBundle\\Entity\\EmailFolder'); $entity = new EmailFolder(); $entity->addSubFolder($subFolder); $entity->addSubFolder($subFolder2); $subFolders = $entity->getSubFolders(); $this->assertInstanceOf('Doctrine\\Common\\Collections\\ArrayCollection', $subFolders); $this->assertCount(2, $subFolders); $this->assertTrue($subFolder === $subFolders[0]); $this->assertTrue($subFolder2 === $subFolders[1]); }