public function testAdapter()
{
$Adapter = $this->getMockBuilder('Acl\\AclInterface')->getMock();
$Adapter->expects($this->once())->method('initialize')->with($this->Acl);
$this->assertNull($this->Acl->adapter($Adapter));
$this->assertEquals($this->Acl->adapter(), $Adapter, 'Returned object is different %s');
}