| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package storm.starter.bolt; |
| |
| import backtype.storm.Config; |
| import backtype.storm.task.OutputCollector; |
| import backtype.storm.task.TopologyContext; |
| import backtype.storm.topology.OutputFieldsDeclarer; |
| import backtype.storm.tuple.Fields; |
| import backtype.storm.tuple.Tuple; |
| import backtype.storm.tuple.Values; |
| import org.testng.annotations.Test; |
| import storm.starter.tools.MockTupleHelpers; |
| |
| import java.util.Map; |
| |
| import static org.fest.assertions.api.Assertions.assertThat; |
| import static org.mockito.Matchers.any; |
| import static org.mockito.Mockito.*; |
| |
| public class RollingCountBoltTest { |
| |
| private static final String ANY_NON_SYSTEM_COMPONENT_ID = "irrelevant_component_id"; |
| private static final String ANY_NON_SYSTEM_STREAM_ID = "irrelevant_stream_id"; |
| |
| private Tuple mockNormalTuple(Object obj) { |
| Tuple tuple = MockTupleHelpers.mockTuple(ANY_NON_SYSTEM_COMPONENT_ID, ANY_NON_SYSTEM_STREAM_ID); |
| when(tuple.getValue(0)).thenReturn(obj); |
| return tuple; |
| } |
| |
| @SuppressWarnings("rawtypes") |
| @Test |
| public void shouldEmitNothingIfNoObjectHasBeenCountedYetAndTickTupleIsReceived() { |
| // given |
| Tuple tickTuple = MockTupleHelpers.mockTickTuple(); |
| RollingCountBolt bolt = new RollingCountBolt(); |
| Map conf = mock(Map.class); |
| TopologyContext context = mock(TopologyContext.class); |
| OutputCollector collector = mock(OutputCollector.class); |
| bolt.prepare(conf, context, collector); |
| |
| // when |
| bolt.execute(tickTuple); |
| |
| // then |
| verifyZeroInteractions(collector); |
| } |
| |
| @SuppressWarnings("rawtypes") |
| @Test |
| public void shouldEmitSomethingIfAtLeastOneObjectWasCountedAndTickTupleIsReceived() { |
| // given |
| Tuple normalTuple = mockNormalTuple(new Object()); |
| Tuple tickTuple = MockTupleHelpers.mockTickTuple(); |
| |
| RollingCountBolt bolt = new RollingCountBolt(); |
| Map conf = mock(Map.class); |
| TopologyContext context = mock(TopologyContext.class); |
| OutputCollector collector = mock(OutputCollector.class); |
| bolt.prepare(conf, context, collector); |
| |
| // when |
| bolt.execute(normalTuple); |
| bolt.execute(tickTuple); |
| |
| // then |
| verify(collector).emit(any(Values.class)); |
| } |
| |
| @Test |
| public void shouldDeclareOutputFields() { |
| // given |
| OutputFieldsDeclarer declarer = mock(OutputFieldsDeclarer.class); |
| RollingCountBolt bolt = new RollingCountBolt(); |
| |
| // when |
| bolt.declareOutputFields(declarer); |
| |
| // then |
| verify(declarer, times(1)).declare(any(Fields.class)); |
| |
| } |
| |
| @Test |
| public void shouldSetTickTupleFrequencyInComponentConfigurationToNonZeroValue() { |
| // given |
| RollingCountBolt bolt = new RollingCountBolt(); |
| |
| // when |
| Map<String, Object> componentConfig = bolt.getComponentConfiguration(); |
| |
| // then |
| assertThat(componentConfig).containsKey(Config.TOPOLOGY_TICK_TUPLE_FREQ_SECS); |
| Integer emitFrequencyInSeconds = (Integer) componentConfig.get(Config.TOPOLOGY_TICK_TUPLE_FREQ_SECS); |
| assertThat(emitFrequencyInSeconds).isGreaterThan(0); |
| } |
| } |