pulsar-client-tools/src/test/java/org/apache/pulsar/admin/cli/TestCmdTopics.java

/**
 * 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.pulsar.admin.cli;

import java.util.ArrayList;
import java.util.List;
import org.apache.pulsar.client.impl.MessageIdImpl;
import org.apache.pulsar.common.policies.data.PersistentTopicInternalStats.LedgerInfo;

import org.testng.Assert;
import org.testng.annotations.Test;

public class TestCmdTopics {
    private static LedgerInfo newLedger(long id, long entries, long size) {
        LedgerInfo l = new LedgerInfo();
        l.ledgerId = id;
        l.entries = entries;
        l.size = size;
        return l;
    }

    @Test
    public void testFindFirstLedgerWithinThreshold() throws Exception {
        List<LedgerInfo> ledgers = new ArrayList<>();
        ledgers.add(newLedger(0, 10, 1000));
        ledgers.add(newLedger(1, 10, 2000));
        ledgers.add(newLedger(2, 10, 3000));

        // test huge threshold
        Assert.assertNull(CmdTopics.findFirstLedgerWithinThreshold(ledgers, Long.MAX_VALUE));

        // test small threshold
        Assert.assertEquals(CmdTopics.findFirstLedgerWithinThreshold(ledgers, 0),
                            new MessageIdImpl(2, 0, -1));

        // test middling thresholds
        Assert.assertEquals(CmdTopics.findFirstLedgerWithinThreshold(ledgers, 1000),
                            new MessageIdImpl(2, 0, -1));
        Assert.assertEquals(CmdTopics.findFirstLedgerWithinThreshold(ledgers, 5000),
                            new MessageIdImpl(1, 0, -1));
    }
}