public function testGetSingleRootAliasWhenQueryHasNoRootAliasAndNoExceptionRequested()
{
$qb = $this->getMockBuilder('Doctrine\\ORM\\QueryBuilder')->disableOriginalConstructor()->getMock();
$qb->expects($this->once())->method('getRootAliases')->willReturn([]);
$this->assertNull($this->doctrineHelper->getSingleRootAlias($qb, false));
}