log.info("test method: testDelete by key");
try {
DynamoDBKey<String, String> dKey = new DynamoDBKey<String, String>();
dKey.setHashKey("Brazil");
dKey.setRangeKey("10/10/1985");
person p1 = new person();
p1.setHashKey(dKey.getHashKey());
p1.setRangeKey(dKey.getRangeKey());
p1.setFirstName("Joao");
p1.setLastName("Velasco");
dataStore.put(dKey, p1);
assertTrue(dataStore.delete(dKey));
dKey.setRangeKey("10/10/1000");
assertFalse(dataStore.delete(dKey));
}catch (Exception e) {