contrib/src/test/java/org/apache/apex/malhar/contrib/misc/math/QuotientMapTest.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.apex.malhar.contrib.misc.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 org.apache.apex.malhar.lib.testbench.CountAndLastTupleTestSink;

/**
 * @deprecated
 * Functional tests for {@link QuotientMap}
 */
@Deprecated
public class QuotientMapTest
{
  private static Logger LOG = LoggerFactory.getLogger(QuotientMap.class);

  /**
   * Test node logic emits correct results
   */
  @Test
  public void testNodeProcessing() throws Exception
  {
    testNodeProcessingSchema(new QuotientMap<String, Integer>());
    testNodeProcessingSchema(new QuotientMap<String, Double>());
  }

  @SuppressWarnings({ "unchecked", "rawtypes" })
  public void testNodeProcessingSchema(QuotientMap oper) throws Exception
  {
    CountAndLastTupleTestSink quotientSink = new CountAndLastTupleTestSink();

    oper.quotient.setSink(quotientSink);
    oper.setMult_by(2);

    oper.beginWindow(0); //
    HashMap<String, Number> input = new HashMap<String, Number>();
    int numtuples = 100;
    for (int i = 0; i < numtuples; i++) {
      input.clear();
      input.put("a", 2);
      input.put("b", 20);
      input.put("c", 1000);
      oper.numerator.process(input);
      input.clear();
      input.put("a", 2);
      input.put("b", 40);
      input.put("c", 500);
      oper.denominator.process(input);
    }

    oper.endWindow();

    // One for each key
    Assert.assertEquals("number emitted tuples", 1, quotientSink.count);
    HashMap<String, Number> output = (HashMap<String, Number>)quotientSink.tuple;
    for (Map.Entry<String, Number> e : output.entrySet()) {
      if (e.getKey().equals("a")) {
        Assert.assertEquals("emitted value for 'a' was ", 2d,
            e.getValue());
      } else if (e.getKey().equals("b")) {
        Assert.assertEquals("emitted tuple for 'b' was ", 1d,
            e.getValue());
      } else if (e.getKey().equals("c")) {
        Assert.assertEquals("emitted tuple for 'c' was ", 4d,
            e.getValue());
      } else {
        LOG.debug(String.format("key was %s", e.getKey()));
      }
    }
  }
}