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]);
}