/**
  * Test allocated memory get method
  */
 public function testGetAllocatedMemory()
 {
     $hardwareServer = new HardwareServerEntity();
     $vs1 = new VirtualServerEntity();
     $vs1->setMemory(1500);
     $vs2 = new VirtualServerEntity();
     $vs2->setMemory(3000);
     $vs3 = new VirtualServerEntity();
     $vs3->setMemory(12000);
     $hardwareServer->setVirtualServers([$vs1, $vs2, $vs3]);
     $this->assertNotEmpty($hardwareServer->getAllocatedMemory());
     $this->assertEquals(1500 + 3000 + 12000, $hardwareServer->getAllocatedMemory());
 }