@group DCOM-43
public function testGetStats() {
$cache = $this
->_getCacheDriver();
$stats = $cache
->getStats();
$this
->assertArrayHasKey(Cache::STATS_HITS, $stats);
$this
->assertArrayHasKey(Cache::STATS_MISSES, $stats);
$this
->assertArrayHasKey(Cache::STATS_UPTIME, $stats);
$this
->assertArrayHasKey(Cache::STATS_MEMORY_USAGE, $stats);
$this
->assertArrayHasKey(Cache::STATS_MEMORY_AVAILIABLE, $stats);
}