assertEquals(2, fc.size());
//at this point the cache should contain feature from area 2 & 3 and features from area 1
//should have been evicted.
assertEquals(0, cache.peek(e4).size());
assertEquals(0, cache.peek(e1).size());
assertEquals(2, cache.peek(e2).size());
assertEquals(2, cache.peek(e3).size());
fc = cache.getFeatures(f4);
assertEquals(2, fc.size());