library/src/test/java/org/apache/apex/malhar/lib/appdata/datastructs/DimensionalTableTest.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.
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package org.apache.apex.malhar.lib.appdata.datastructs;

import java.util.Map;
import java.util.Set;

import org.junit.Assert;
import org.junit.Test;

import org.apache.apex.malhar.lib.util.KryoCloneUtils;

import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;

public class DimensionalTableTest
{
  @Test
  public void serializabilityTest() throws Exception
  {
    DimensionalTable<Integer> table = createTestTable();

    KryoCloneUtils.cloneObject(table);
  }

  @Test
  public void serializationRestorationTest() throws Exception
  {
    DimensionalTable<Integer> table = createTestTable();
    int size = table.size();

    table = KryoCloneUtils.cloneObject(table);
    Assert.assertEquals(size, table.size());
  }

  @Test
  public void getDataPointTest()
  {
    DimensionalTable<Integer> table = createTestTable();

    Integer point = table.getDataPoint(Lists.newArrayList("google", "taco bell", "Ukraine"));
    Assert.assertEquals((Integer)6, point);

    Map<String, String> selectionValues = Maps.newHashMap();
    selectionValues.put("publisher", "amazon");
    selectionValues.put("advertiser", "burger king");
    selectionValues.put("location", "Czech");

    point = table.getDataPoint(selectionValues);
    Assert.assertEquals((Integer)7, point);
  }

  @Test
  public void getDataPointsTest()
  {
    DimensionalTable<Integer> table = createTestTable();

    //Select on publisher
    Set<Integer> expectedDataPoints = Sets.newHashSet(3, 4, 5);
    Map<String, String> selectionKeys = Maps.newHashMap();
    selectionKeys.put("publisher", "twitter");

    Set<Integer> dataPoints = Sets.newHashSet(table.getDataPoints(selectionKeys));

    Assert.assertEquals(expectedDataPoints, dataPoints);

    //Select on advertiser
    expectedDataPoints = Sets.newHashSet(8, 9);
    selectionKeys.clear();
    selectionKeys.put("advertiser", "microsoft");

    dataPoints = Sets.newHashSet(table.getDataPoints(selectionKeys));

    Assert.assertEquals(expectedDataPoints, dataPoints);

    //Select on location
    expectedDataPoints = Sets.newHashSet(2, 10);
    selectionKeys.clear();
    selectionKeys.put("location", "NY");

    dataPoints = Sets.newHashSet(table.getDataPoints(selectionKeys));

    Assert.assertEquals(expectedDataPoints, dataPoints);
  }

  @Test
  public void duplicateAppendTest()
  {
    DimensionalTable<Integer> table = new DimensionalTable<Integer>(Lists.newArrayList("publisher", "advertiser", "location"));

    table.appendRow(1, "google", "starbucks", "CA");
    table.appendRow(2, "google", "starbucks", "CA");

    Assert.assertEquals(1, table.dataColumn.size());
    Assert.assertEquals(1, table.dimensionColumns.get(0).size());

    final Integer expectedPoint = 2;

    Map<String, String> row = Maps.newHashMap();
    row.put("publisher", "google");
    row.put("advertiser", "starbucks");
    row.put("location", "CA");

    table.appendRow(expectedPoint, row);

    Integer point = table.getDataPoint(row);
    Assert.assertEquals(expectedPoint, point);
  }

  @Test
  public void mapAppendTest()
  {
    DimensionalTable<Integer> table = createTestTable();

    final Integer expectedPoint = 1000;

    Map<String, String> row = Maps.newHashMap();
    row.put("publisher", "twitter");
    row.put("advertiser", "best buy");
    row.put("location", "san diego");

    table.appendRow(expectedPoint, row);

    Integer point = table.getDataPoint(row);
    Assert.assertEquals(expectedPoint, point);
  }

  private DimensionalTable<Integer> createTestTable()
  {
    DimensionalTable<Integer> table = new DimensionalTable<Integer>(Lists.newArrayList("publisher", "advertiser", "location"));

    table.appendRow(1, "google", "starbucks", "CA");
    table.appendRow(2, "amazon", "walmart", "NY");
    table.appendRow(3, "twitter", "safeway", "NV");
    table.appendRow(4, "twitter", "khol's", "AK");
    table.appendRow(5, "twitter", "starbucks", "Russia");
    table.appendRow(6, "google", "taco bell", "Ukraine");
    table.appendRow(7, "amazon", "burger king", "Czech");
    table.appendRow(8, "google", "microsoft", "Hungary");
    table.appendRow(9, "amazon", "microsoft", "Hungary");
    table.appendRow(10, "amazon", "starbucks", "NY");

    return table;
  }
}