| /** |
| * 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 org.apache.storm.starter.bolt; |
| |
| import java.util.Map; |
| import org.apache.storm.Config; |
| import org.apache.storm.task.OutputCollector; |
| import org.apache.storm.task.TopologyContext; |
| import org.apache.storm.topology.OutputFieldsDeclarer; |
| import org.apache.storm.tuple.Fields; |
| import org.apache.storm.tuple.Tuple; |
| import org.apache.storm.tuple.Values; |
| import org.apache.storm.utils.MockTupleHelpers; |
| import org.testng.annotations.Test; |
| |
| import static org.fest.assertions.api.Assertions.assertThat; |
| import static org.mockito.Matchers.any; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.times; |
| import static org.mockito.Mockito.verify; |
| import static org.mockito.Mockito.verifyZeroInteractions; |
| import static org.mockito.Mockito.when; |
| |
| 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<String, Object> 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<String, Object> 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); |
| } |
| } |