/**
* @return \core_kernel_classes_Class|null
*/
public function testTestCenterRoot()
{
$testCenterClass = $this->testCenterService->getRootClass();
$this->assertInstanceOf('core_kernel_classes_Class', $testCenterClass);
$this->assertEquals(TestCenterService::CLASS_URI, $testCenterClass->getUri());
return $testCenterClass;
}
