/*
* 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.
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package org.apache.kafka.clients.consumer;
import org.apache.kafka.clients.consumer.internals.NoOpConsumerRebalanceListener;
import org.apache.kafka.common.TopicPartition;
import org.apache.kafka.common.record.TimestampType;
import org.junit.Test;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Iterator;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
public class MockConsumerTest {
private MockConsumer<String, String> consumer = new MockConsumer<String, String>(OffsetResetStrategy.EARLIEST);
@Test
public void testSimpleMock() {
consumer.subscribe(Arrays.asList("test"), new NoOpConsumerRebalanceListener());
assertEquals(0, consumer.poll(1000).count());
consumer.rebalance(Arrays.asList(new TopicPartition("test", 0), new TopicPartition("test", 1)));
// Mock consumers need to seek manually since they cannot automatically reset offsets
HashMap<TopicPartition, Long> beginningOffsets = new HashMap<>();
beginningOffsets.put(new TopicPartition("test", 0), 0L);
beginningOffsets.put(new TopicPartition("test", 1), 0L);
consumer.updateBeginningOffsets(beginningOffsets);
consumer.seek(new TopicPartition("test", 0), 0);
ConsumerRecord<String, String> rec1 = new ConsumerRecord<String, String>("test", 0, 0, 0L, TimestampType.CREATE_TIME, 0L, 0, 0, "key1", "value1");
ConsumerRecord<String, String> rec2 = new ConsumerRecord<String, String>("test", 0, 1, 0L, TimestampType.CREATE_TIME, 0L, 0, 0, "key2", "value2");
consumer.addRecord(rec1);
consumer.addRecord(rec2);
ConsumerRecords<String, String> recs = consumer.poll(1);
Iterator<ConsumerRecord<String, String>> iter = recs.iterator();
assertEquals(rec1, iter.next());
assertEquals(rec2, iter.next());
assertFalse(iter.hasNext());
assertEquals(2L, consumer.position(new TopicPartition("test", 0)));
consumer.commitSync();
assertEquals(2L, consumer.committed(new TopicPartition("test", 0)).offset());
}
}