Default Unit tests are not compatible for Elgg version 1.10

Assumptions

Auto-loading classes are not working appropriately and return "Fatal error". Please check the below mentioned error:  

PHP Fatal error:  Interface 'Elgg\Cache\PoolTestCase' not found in 

[Elgg hosted directory path ] /engine/tests/phpunit/Elgg/Cache/MemoryPoolTest.php on line 6