MemBucketTest.java

/*
 * Copyright 2014-2016 CyberVision, Inc.
 *
 * Licensed 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.kaaproject.kaa.client.logging.memory;

import org.junit.Assert;
import org.junit.Test;
import org.kaaproject.kaa.client.logging.LogRecord;

import java.util.List;

public class MemBucketTest {

  public void addLogRecordTestHelper(int maxSize, int maxRecordCount) {
    MemBucket bucket = new MemBucket(1, maxSize, maxRecordCount);

    int curSize = 0;
    int curRecordCount = 0;

    LogRecord record = new LogRecord();

    while (curSize + record.getSize() <= maxSize && curRecordCount < maxRecordCount) {
      Assert.assertTrue(bucket.addRecord(record));
      curRecordCount++;
      curSize += 3;
    }

    Assert.assertFalse(bucket.addRecord(record));
  }

  @Test
  public void addLogRecordTest() {
    addLogRecordTestHelper(10, 2);
    addLogRecordTestHelper(14, 10);
    addLogRecordTestHelper(2, 10);
    addLogRecordTestHelper(10, 1);
  }

  @Test
  public void shrinkToSizeTest() {
    MemBucket bucket = new MemBucket(1, 100, 100);
    addNRecordsToBucket(bucket, 10);
    List<LogRecord> overSize = bucket.shrinkToSize(10, 4);
    Assert.assertEquals(3, bucket.getCount());
    Assert.assertEquals(9, bucket.getSize());
    Assert.assertEquals(7, overSize.size());

    bucket = new MemBucket(1, 100, 100);
    addNRecordsToBucket(bucket, 10);
    overSize = bucket.shrinkToSize(10, 2);
    Assert.assertEquals(2, bucket.getCount());
    Assert.assertEquals(6, bucket.getSize());
    Assert.assertEquals(8, overSize.size());

    overSize = bucket.shrinkToSize(400, 400);
    Assert.assertEquals(0, overSize.size());
  }

  private void addNRecordsToBucket(MemBucket bucket, int n) {
    while (n-- > 0) {
      bucket.addRecord(new LogRecord());
    }
  }
}