public void testDeleteLongString3() {
String ROOT_HASH_BEFORE = "e020de34ca26f8d373ff2c0a8ac3a4cb9032bfa7a194c68330b7ac3584a1d388";
String ROOT_HASH_AFTER = "63356ecf33b083e244122fca7a9b128cc7620d438d5d62e4f8b5168f1fb0527b";
TrieImpl trie = new TrieImpl(mockDb);
trie.update(cat, LONG_STRING);
assertEquals(LONG_STRING, new String(trie.get(cat)));
trie.update(ca, LONG_STRING);
assertEquals(LONG_STRING, new String(trie.get(ca)));
assertEquals(ROOT_HASH_BEFORE, Hex.toHexString(trie.getRootHash()));