// 1 Refresh
Thread.sleep(TURBINE_CACHE_REFRESH + 1);
assertTrue("No object in cache before flush", (0 < globalCache.getNumberOfObjects()));
// Flush Cache
globalCache.flushCache();
// Wait 15 seconds, 3 Refresh
Thread.sleep((TURBINE_CACHE_REFRESH * 2) + 1);
assertEquals("After refresh", 0, globalCache.getNumberOfObjects());