/*
* Copyright 2016 Naver Corp.
*
* 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 com.navercorp.pinpoint.common.server.bo.codec.stat;
import com.navercorp.pinpoint.common.buffer.AutomaticBuffer;
import com.navercorp.pinpoint.common.buffer.Buffer;
import com.navercorp.pinpoint.common.buffer.FixedBuffer;
import org.junit.Assert;
import org.junit.Test;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
/**
* @author HyunGil Jeong
*/
public class AgentStatDataPointCodecTest {
private AgentStatDataPointCodec codec = new AgentStatDataPointCodec();
@Test
public void test_timestamps() {
// Given
final long initialTimestamp = System.currentTimeMillis();
final long intervalMs = 5000L;
final long randomDelta = 10L;
final int numValues = (int) (Math.random() * 100) + 1;
final List<Long> expectedTimestamps = createTimestamps(initialTimestamp, intervalMs, randomDelta, numValues);
final Buffer timestampBuffer = new AutomaticBuffer();
// When
codec.encodeTimestamps(timestampBuffer, expectedTimestamps);
// Then
List<Long> decodedTimestamps = codec.decodeTimestamps(initialTimestamp, new FixedBuffer(timestampBuffer.getBuffer()), numValues);
Assert.assertEquals(expectedTimestamps, decodedTimestamps);
}
@Test
public void test_single_timestamp() {
// Given
final long givenTimestamp = System.currentTimeMillis();
final List<Long> expectedTimestamp = Arrays.asList(givenTimestamp);
final Buffer timestampBuffer = new AutomaticBuffer();
// When
codec.encodeTimestamps(timestampBuffer, expectedTimestamp);
// Then
List<Long> decodedTimestamp = codec.decodeTimestamps(givenTimestamp, new FixedBuffer(timestampBuffer.getBuffer()), 1);
Assert.assertEquals(expectedTimestamp, decodedTimestamp);
}
private List<Long> createTimestamps(long initialTimestampMs, long intervalMs, long randomDelta, int numValues) {
List<Long> timestamps = new ArrayList<Long>(numValues);
timestamps.add(initialTimestampMs);
long prevTimestamp = initialTimestampMs;
for (int i = 1; i < numValues; ++i) {
long delta = ((long) (Math.random() * (randomDelta * 2))) - randomDelta;
long timestamp = prevTimestamp + (intervalMs + delta);
timestamps.add(timestamp);
prevTimestamp = timestamp;
}
return timestamps;
}
}