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TestMeasurementsExporter.java
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Wed, May 22, 13:01

TestMeasurementsExporter.java
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/**
* Copyright (c) 2015 Yahoo! Inc. All rights reserved.
* <p>
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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. See accompanying
* LICENSE file.
*/
package com.yahoo.ycsb.measurements.exporter;
import com.yahoo.ycsb.generator.ZipfianGenerator;
import com.yahoo.ycsb.measurements.Measurements;
import org.codehaus.jackson.JsonNode;
import org.codehaus.jackson.map.ObjectMapper;
import org.testng.annotations.Test;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Properties;
import static org.testng.AssertJUnit.assertEquals;
import static org.testng.AssertJUnit.assertTrue;
public class TestMeasurementsExporter {
@Test
public void testJSONArrayMeasurementsExporter() throws IOException {
Properties props = new Properties();
props.put(Measurements.MEASUREMENT_TYPE_PROPERTY, "histogram");
Measurements mm = new Measurements(props);
ByteArrayOutputStream out = new ByteArrayOutputStream();
JSONArrayMeasurementsExporter export = new JSONArrayMeasurementsExporter(out);
long min = 5000;
long max = 100000;
ZipfianGenerator zipfian = new ZipfianGenerator(min, max);
for (int i = 0; i < 1000; i++) {
int rnd = zipfian.nextValue().intValue();
mm.measure("UPDATE", rnd);
}
mm.exportMeasurements(export);
export.close();
ObjectMapper mapper = new ObjectMapper();
JsonNode json = mapper.readTree(out.toString("UTF-8"));
assertTrue(json.isArray());
assertEquals(json.get(0).get("measurement").asText(), "Operations");
assertEquals(json.get(4).get("measurement").asText(), "MaxLatency(us)");
assertEquals(json.get(11).get("measurement").asText(), "4");
}
}

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