/******************************************************************************* * 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.flume.source.kafka; import static org.junit.Assert.assertEquals; import static org.mockito.Matchers.anyList; import static org.mockito.Mockito.mock; import static org.mockito.Mockito.times; import static org.mockito.Mockito.verify; import static org.mockito.Mockito.when; import java.lang.reflect.Field; import java.nio.ByteBuffer; import kafka.consumer.ConsumerIterator; import kafka.message.Message; import kafka.message.MessageAndMetadata; import org.apache.flume.EventDeliveryException; import org.apache.flume.PollableSource.Status; import org.apache.flume.channel.ChannelProcessor; import org.apache.flume.source.AbstractSource; import org.junit.After; import org.junit.Before; import org.junit.Test; import org.slf4j.Logger; import org.slf4j.LoggerFactory; public class KafkaSourceTest { private static final Logger log = LoggerFactory.getLogger(KafkaSourceTest.class); private KafkaSource mockKafkaSource; private ConsumerIterator<Message> mockIt; @SuppressWarnings("rawtypes") private MessageAndMetadata mockMessageAndMetadata; private ChannelProcessor mockChannelProcessor; private ByteBuffer mockBuffer; private Message mockMessage; @SuppressWarnings("unchecked") @Before public void setup() throws Exception { mockIt = mock(ConsumerIterator.class); mockMessageAndMetadata = mock(MessageAndMetadata.class); mockChannelProcessor = mock(ChannelProcessor.class); mockBuffer = mock(ByteBuffer.class); mockMessage = mock(Message.class); mockKafkaSource = new KafkaSource(); when(mockMessage.payload()).thenReturn(mockBuffer); when(mockMessageAndMetadata.message()).thenReturn(mockMessage); Field field = AbstractSource.class.getDeclaredField("channelProcessor"); field.setAccessible(true); field.set(mockKafkaSource, mockChannelProcessor); field = KafkaSource.class.getDeclaredField("it"); field.setAccessible(true); field.set(mockKafkaSource, mockIt); } @After public void tearDown() throws Exception { } @SuppressWarnings("unchecked") @Test public void testProcessItNotEmpty() throws EventDeliveryException, SecurityException, NoSuchFieldException, IllegalArgumentException, IllegalAccessException { when(mockIt.next()).thenReturn(mockMessageAndMetadata); when(mockIt.hasNext()).thenReturn(true); Status status = mockKafkaSource.process(); verify(mockIt, times(1)).hasNext(); verify(mockIt, times(1)).next(); verify(mockChannelProcessor, times(1)).processEventBatch(anyList()); when(mockIt.next()).thenReturn(mockMessageAndMetadata); assertEquals(Status.READY, status); } @SuppressWarnings("unchecked") @Test public void testProcessItEmpty() throws EventDeliveryException, SecurityException, NoSuchFieldException, IllegalArgumentException, IllegalAccessException { when(mockIt.next()).thenReturn(mockMessageAndMetadata); when(mockIt.hasNext()).thenReturn(false); Status status = mockKafkaSource.process(); verify(mockIt, times(1)).hasNext(); verify(mockIt, times(0)).next(); verify(mockChannelProcessor, times(1)).processEventBatch(anyList()); when(mockIt.next()).thenReturn(mockMessageAndMetadata); assertEquals(Status.READY, status); } @SuppressWarnings("unchecked") @Test public void testProcessException() throws EventDeliveryException, SecurityException, NoSuchFieldException, IllegalArgumentException, IllegalAccessException { when(mockIt.next()).thenThrow(new RuntimeException()); when(mockIt.hasNext()).thenReturn(true); Status status = mockKafkaSource.process(); verify(mockIt, times(1)).hasNext(); verify(mockIt, times(1)).next(); verify(mockChannelProcessor, times(0)).processEventBatch(anyList()); assertEquals(Status.BACKOFF, status); } }