pulsar-broker/src/test/java/org/apache/pulsar/broker/service/HashRangeAutoSplitStickyKeyConsumerSelectorTest.java

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 * 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,
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 * specific language governing permissions and limitations
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package org.apache.pulsar.broker.service;

import com.google.common.collect.ImmutableList;
import org.testng.Assert;
import org.testng.annotations.Test;

import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

public class HashRangeAutoSplitStickyKeyConsumerSelectorTest {

    @Test
    public void testGetConsumerKeyHashRanges() throws BrokerServiceException.ConsumerAssignException {
        HashRangeAutoSplitStickyKeyConsumerSelector selector = new HashRangeAutoSplitStickyKeyConsumerSelector(2 << 5);
        List<String> consumerName = Arrays.asList("consumer1", "consumer2", "consumer3", "consumer4");
        for (int index = 0; index < consumerName.size(); index++) {
            Consumer consumer = mock(Consumer.class);
            when(consumer.consumerName()).thenReturn(consumerName.get(index));
            selector.addConsumer(consumer);
        }

        Map<String, List<String>> expectedResult = new HashMap<>();
        expectedResult.put("consumer1", ImmutableList.of("[49, 64]"));
        expectedResult.put("consumer4", ImmutableList.of("[33, 48]"));
        expectedResult.put("consumer2", ImmutableList.of("[17, 32]"));
        expectedResult.put("consumer3", ImmutableList.of("[0, 16]"));
        for (Map.Entry<String, List<String>> entry : selector.getConsumerKeyHashRanges().entrySet()) {
            Assert.assertEquals(entry.getValue(), expectedResult.get(entry.getKey()));
            expectedResult.remove(entry.getKey());
        }
        Assert.assertEquals(expectedResult.size(), 0);
    }

}