* Match behaviour of MapCacheLRU and ProcessCacheLRU.
* Add missing unit tests for TTL and maxCacheKeys eviction behaviour.
Change-Id: I559eae1cd336274b21728e86775cfbad7e2f2c6d
Follows-up 7cddc22.
Also use PHPUnit_Framework_TestCase as parent instead of MediaWikiTestCase
in preparation for library extraction.
Change-Id: I0e68e56ecf8376b52a59c33ba6dd18b671bdcfc9