library/src/test/java/com/datatorrent/lib/math/RangeMapTest.java

/*
 * Copyright (c) 2013 DataTorrent, Inc. ALL Rights Reserved.
 *
 * 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.datatorrent.lib.math;

import java.util.HashMap;
import java.util.Map;

import org.junit.Assert;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.datatorrent.api.Sink;

import com.datatorrent.lib.util.HighLow;

/**
 * Functional tests for {@link com.datatorrent.lib.math.RangeMap}
 */
public class RangeMapTest<V extends Number>
{
  private static Logger log = LoggerFactory.getLogger(RangeMapTest.class);

  @SuppressWarnings("rawtypes")
	class TestSink implements Sink
  {
    double low = -1;
    double high = -1;

    @SuppressWarnings("unchecked")
		@Override
    public void put(Object payload)
    {
      HashMap<String, Object> tuple = (HashMap<String, Object>)payload;
      for (Map.Entry<String, Object> e : tuple.entrySet()) {
        HighLow<V> hl = (HighLow<V>)e.getValue();
        high = hl.getHigh().doubleValue();
        low = hl.getLow().doubleValue();
      }
    }

    @Override
    public int getCount(boolean reset)
    {
      throw new UnsupportedOperationException("Not supported yet.");
    }
  }

  /**
   * Test functional logic
   */
  @Test
  public void testNodeProcessing()
  {
    testSchemaNodeProcessing(new RangeMap<String, Integer>(), "integer"); // 8million/s
    testSchemaNodeProcessing(new RangeMap<String, Double>(), "double"); // 8 million/s
    testSchemaNodeProcessing(new RangeMap<String, Long>(), "long"); // 8 million/s
    testSchemaNodeProcessing(new RangeMap<String, Short>(), "short"); // 8 million/s
    testSchemaNodeProcessing(new RangeMap<String, Float>(), "float"); // 8 million/s
  }

  /**
   * Test node logic emits correct results for each schema
   */
  @SuppressWarnings({ "unchecked", "rawtypes" })
	public void testSchemaNodeProcessing(RangeMap node, String type)
  {
    TestSink rangeSink = new TestSink();
    node.range.setSink(rangeSink);

    new HashMap<String, Number>();
    int numtuples = 1000;
    // For benchmark do -> numtuples = numtuples * 100;
    if (type.equals("integer")) {
      HashMap<String, Integer> tuple;
      for (int i = -10; i < numtuples; i++) {
        tuple = new HashMap<String, Integer>();
        tuple.put("a", new Integer(i));
        node.data.process(tuple);
      }
    }
    else if (type.equals("double")) {
      HashMap<String, Double> tuple;
      for (int i = -10; i < numtuples; i++) {
        tuple = new HashMap<String, Double>();
        tuple.put("a", new Double(i));
        node.data.process(tuple);
      }
    }
    else if (type.equals("long")) {
      HashMap<String, Long> tuple;
      for (int i = -10; i < numtuples; i++) {
        tuple = new HashMap<String, Long>();
        tuple.put("a", new Long(i));
        node.data.process(tuple);
      }
    }
    else if (type.equals("short")) {
      HashMap<String, Short> tuple;
      for (short i = -10; i < 1000; i++) {
        tuple = new HashMap<String, Short>();
        tuple.put("a", new Short(i));
        node.data.process(tuple);
      }
    }
    else if (type.equals("float")) {
      HashMap<String, Float> tuple;
      for (int i = -10; i < numtuples; i++) {
        tuple = new HashMap<String, Float>();
        tuple.put("a", new Float(i));
        node.data.process(tuple);
      }
    }
    node.endWindow();
    Assert.assertEquals("high was ", new Double(999.0), rangeSink.high, 0);
    Assert.assertEquals("low was ", new Double(-10.0), rangeSink.low, 0);
    log.debug(String.format("\nTested %d tuples", numtuples));
  }
}