Using Mockito to test Java Hbase API - unit-testing

Question

This is the method that I am testing. This method gets some Bytes from a Hbase Database based on an specific id, in this case called dtmid. The reason I why I want to return some specific values is because I realized that there is no way to know if an id will always be in Hbase. Also, the column Family and column name could change.
#Override
public void execute(Tuple tuple, BasicOutputCollector collector) {
try {
if (tuple.size() > 0) {
Long dtmid = tuple.getLong(0);
byte[] rowKey = HBaseRowKeyDistributor.getDistributedKey(dtmid);
Get get = new Get(rowKey);
get.addFamily("a".getBytes());
Result result = table.get(get);
byte[] bidUser = result.getValue("a".getBytes(),
"co_created_5076".getBytes());
collector.emit(new Values(dtmid, bidUser));
}
} catch (IOException e) {
e.printStackTrace();
}
}
On my main class when this method is called I want to return a specific value. The method should return some bytes.
byte[] bidUser = result.getValue("a".getBytes(),
"co_created_5076".getBytes());
This is what I have on my Unit Test.
#Test
public void testExecute() throws IOException {
long dtmId = 350000000770902930L;
final byte[] COL_FAMILY = "a".getBytes();
final byte[] COL_QUALIFIER = "co_created_5076".getBytes();
//setting a key value pair to put in result
List<KeyValue> kvs = new ArrayList<KeyValue>();
kvs.add(new KeyValue("--350000000770902930".getBytes(), COL_FAMILY, COL_QUALIFIER, Bytes.toBytes("ExpedtedBytes")));
// I create an Instance of result
Result result = new Result(kvs);
// A mock tuple with a single dtmid
Tuple tuple = mock(Tuple.class);
bolt.table = mock(HTable.class);
Result mcResult = mock(Result.class);
when(tuple.size()).thenReturn(1);
when(tuple.getLong(0)).thenReturn(dtmId);
when(bolt.table.get(any(Get.class))).thenReturn(result);
when(mcResult.getValue(any(byte[].class), any(byte[].class))).thenReturn(Bytes.toBytes("Bytes"));
BasicOutputCollector collector = mock(BasicOutputCollector.class);
// Execute the bolt.
bolt.execute(tuple, collector);
ArgumentCaptor<Values> valuesArg = ArgumentCaptor
.forClass(Values.class);
verify(collector).emit(valuesArg.capture());
Values d = valuesArg.getValue();
//casting this object in to a byteArray.
byte[] i = (byte[]) d.get(1);
assertEquals(dtmId, d.get(0));
}
I am using this down here to return my bytes.For some reason is not working.
when(mcResult.getValue(any(byte[].class), any(byte[].class))).thenReturn(Bytes
.toBytes("myBytes"));
For some reason when I capture the values, I still get the bytes that I specified here:
List<KeyValue> kvs = new ArrayList<KeyValue>();
kvs.add(new KeyValue("--350000000770902930".getBytes(),COL_FAMILY, COL_QUALIFIER, Bytes
.toBytes("ExpedtedBytes")));
Result result = new Result(kvs);

Answer 1

How about replacing
when(bolt.table.get(any(Get.class))).thenReturn(result);
with...
when(bolt.table.get(any(Get.class))).thenReturn(mcResult);