XYStackerTest.java

/*
 *  Copyright 2014 TWO SIGMA OPEN SOURCE, LLC
 *
 *  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.twosigma.beaker.chart.xychart.plotitem;

import org.assertj.core.api.Assertions;
import org.junit.Before;
import org.junit.Test;

import java.util.Arrays;
import java.util.List;

public class XYStackerTest {
  BasedXYGraphics area1, area2, area3;

  @Before
  public void initStubData() {
    area1 = new Area();
    area1.setX(Arrays.asList(new Integer(1)));
    area1.setY(Arrays.asList(new Integer(1)));
    area2 = new Area();
    area2.setX(Arrays.asList(new Integer(1), new Integer(2)));
    area2.setY(Arrays.asList(new Integer(1), new Integer(2)));
    area3 = new Area();
    area3.setX(Arrays.asList(new Integer(1), new Integer(2), new Integer(3)));
    area3.setY(Arrays.asList(new Integer(1), new Integer(2), new Integer(3)));
  }

  @Test
  public void callStackWithMaxSizeAreasIsThree_returnAllAreasWithSizeIsThree() {
    //when
    List<BasedXYGraphics> list = XYStacker.stack(Arrays.asList(area1, area2, area3));
    //then
    Assertions.assertThat(list.get(0).getX().size()).isEqualTo(3);
    Assertions.assertThat(list.get(0).getY().size()).isEqualTo(3);
    Assertions.assertThat(list.get(1).getX().size()).isEqualTo(3);
    Assertions.assertThat(list.get(1).getY().size()).isEqualTo(3);
    Assertions.assertThat(list.get(2).getX().size()).isEqualTo(3);
    Assertions.assertThat(list.get(2).getY().size()).isEqualTo(3);
  }

  @Test
  public void callStackWithOneAndThreeElementsArea_returnFirstAreaWithTheSameYs() {
    //when
    List<BasedXYGraphics> list = XYStacker.stack(Arrays.asList(area1, area3));
    List<Number> firstAreaYs = list.get(0).getY();
    //then
    Assertions.assertThat(firstAreaYs.get(0))
        .isEqualTo(firstAreaYs.get(1))
        .isEqualTo(firstAreaYs.get(2));
  }

  @Test
  public void callStackWithAreas_returnFirstAreaYsEqualsSecondAreaBases() {
    //when
    List<BasedXYGraphics> list = XYStacker.stack(Arrays.asList(area3, area1));
    List<Number> firstAreaYs = list.get(0).getY();
    List<Number> secondAreaBases = list.get(1).getBases();
    //then
    Assertions.assertThat(firstAreaYs.get(0)).isEqualTo(secondAreaBases.get(0));
    Assertions.assertThat(firstAreaYs.get(1)).isEqualTo(secondAreaBases.get(1));
    Assertions.assertThat(firstAreaYs.get(2)).isEqualTo(secondAreaBases.get(2));
  }

  @Test
  public void callStackWithOneArea_returnThatArea() {
    //when
    List<BasedXYGraphics> list = XYStacker.stack(Arrays.asList(area1));
    //then
    Assertions.assertThat(list.get(0)).isEqualTo(area1);
  }



}