nbinotifications/src/test/java/org/opendaylight/transportpce/nbinotifications/consumer/SubscriberTest.java

   1 /*
   2  * Copyright © 2020 Orange, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.transportpce.nbinotifications.consumer;
   9
  10 import static org.junit.Assert.assertEquals;
  11 import static org.junit.Assert.assertTrue;
  12
  13 import java.util.Collections;
  14 import java.util.HashMap;
  15 import java.util.List;
  16 import java.util.Map;
  17 import org.apache.kafka.clients.consumer.ConsumerRecord;
  18 import org.apache.kafka.clients.consumer.MockConsumer;
  19 import org.apache.kafka.clients.consumer.OffsetResetStrategy;
  20 import org.apache.kafka.common.TopicPartition;
  21 import org.junit.Before;
  22 import org.junit.Test;
  23 import org.opendaylight.transportpce.nbinotifications.utils.NotificationServiceDataUtils;
  24 import org.opendaylight.transportpce.test.AbstractTest;
  25 import org.opendaylight.yang.gen.v1.nbi.notifications.rev201130.get.notifications.service.output.NotificationService;
  26
  27 public class SubscriberTest extends AbstractTest {
  28     private static final String TOPIC = "topic";
  29     private static final int PARTITION = 0;
  30     private MockConsumer<String, NotificationService> mockConsumer;
  31     private Subscriber subscriber;
  32
  33     @Before
  34     public void setUp() {
  35         mockConsumer = new MockConsumer<>(OffsetResetStrategy.EARLIEST);
  36         subscriber = new Subscriber(mockConsumer);
  37     }
  38
  39     @Test
  40     public void subscribeServiceShouldBeSuccessful() {
  41         // from https://www.baeldung.com/kafka-mockconsumer
  42         ConsumerRecord<String, NotificationService> record = new ConsumerRecord<String, NotificationService>(
  43                 TOPIC, PARTITION, 0L, "key", NotificationServiceDataUtils.buildReceivedEvent());
  44         mockConsumer.schedulePollTask(() -> {
  45             mockConsumer.rebalance(Collections.singletonList(new TopicPartition(TOPIC, PARTITION)));
  46             mockConsumer.addRecord(record);
  47         });
  48
  49         Map<TopicPartition, Long> startOffsets = new HashMap<>();
  50         TopicPartition tp = new TopicPartition(TOPIC, PARTITION);
  51         startOffsets.put(tp, 0L);
  52         mockConsumer.updateBeginningOffsets(startOffsets);
  53         List<NotificationService> result = subscriber.subscribeService(TOPIC);
  54         assertEquals("There should be 1 record", 1, result.size());
  55         assertTrue("Consumer should be closed", mockConsumer.closed());
  56     }
  57 }