/*
* Druid - a distributed column store.
* Copyright (C) 2012, 2013 Metamarkets Group Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package io.druid.query.aggregation.histogram;
import com.fasterxml.jackson.databind.ObjectMapper;
import io.druid.jackson.DefaultObjectMapper;
import org.hamcrest.CoreMatchers;
import org.junit.Assert;
import org.junit.Test;
import java.util.ArrayList;
import java.util.LinkedHashMap;
public class QuantilesTest
{
@Test
public void testSerialization() throws Exception
{
ObjectMapper mapper = new DefaultObjectMapper();
float[] probabilities = new float[]{0.25f, 0.5f, 0.75f};
float[] quantiles = new float[]{0.25f, 0.5f, 0.75f};
float min = 0f;
float max = 4f;
String theString = mapper.writeValueAsString(
new Quantiles(probabilities, quantiles, min, max)
);
Object theObject = mapper.readValue(theString, Object.class);
Assert.assertThat(theObject, CoreMatchers.instanceOf(LinkedHashMap.class));
LinkedHashMap theMap = (LinkedHashMap) theObject;
ArrayList theProbabilities = (ArrayList<Float>) theMap.get("probabilities");
Assert.assertEquals(probabilities.length, theProbabilities.size());
for (int i = 0; i < theProbabilities.size(); ++i) {
Assert.assertEquals(probabilities[i], ((Number) theProbabilities.get(i)).floatValue(), 0.0001f);
}
ArrayList theQuantiles = (ArrayList<Float>) theMap.get("quantiles");
Assert.assertEquals(quantiles.length, theQuantiles.size());
for (int i = 0; i < theQuantiles.size(); ++i) {
Assert.assertEquals(quantiles[i], ((Number) theQuantiles.get(i)).floatValue(), 0.0001f);
}
Assert.assertEquals(
"serialized min. matches expected min.",
min,
((Number) theMap.get("min")).floatValue(),
0.0001f
);
Assert.assertEquals(
"serialized max. matches expected max.",
max,
((Number) theMap.get("max")).floatValue(),
0.0001f
);
}
}