random.nextBytes(data);
byteMap.put("a3", data);
cache.store("a1", new ByteArrayInputStream(byteMap.get("a1")));
cache.store("a2", new ByteArrayInputStream(byteMap.get("a2")));
cache.store("a3", new ByteArrayInputStream(byteMap.get("a3")));
assertEquals(new ByteArrayInputStream(byteMap.get("a1")),
cache.getIfStored("a1"));
assertEquals(new ByteArrayInputStream(byteMap.get("a2")),
cache.getIfStored("a2"));
assertEquals(new ByteArrayInputStream(byteMap.get("a3")),