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- /* ===========================================================
- * JFreeChart : a free chart library for the Java(tm) platform
- * ===========================================================
- *
- * (C) Copyright 2000-2013, by Object Refinery Limited and Contributors.
- *
- * Project Info: http://www.jfree.org/jfreechart/index.html
- *
- * This library is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation; either version 2.1 of the License, or
- * (at your option) any later version.
- *
- * This library 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 Lesser General Public
- * License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
- * USA.
- *
- * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
- * Other names may be trademarks of their respective owners.]
- *
- * ----------------------
- * MovingAverageTest.java
- * ----------------------
- * (C) Copyright 2003-2013, by Object Refinery Limited and Contributors.
- *
- * Original Author: David Gilbert (for Object Refinery Limited);
- * Contributor(s): -;
- *
- * Changes
- * -------
- * 14-Aug-2003 : Version 1 (DG);
- * 04-Oct-2004 : Eliminated NumberUtils usage (DG);
- *
- */
- package org.jfree.data.time;
- import static org.junit.Assert.assertEquals;
- import org.jfree.date.MonthConstants;
- import org.junit.Test;
- /**
- * Tests for the {@link MovingAverage} class.
- */
- public class MovingAverageTest {
- private static final double EPSILON = 0.0000000001;
- /**
- * A test for the values calculated from a time series.
- */
- @Test
- public void test1() {
- TimeSeries source = createDailyTimeSeries1();
- TimeSeries maverage = MovingAverage.createMovingAverage(source,
- "Moving Average", 3, 3);
- // the moving average series has 7 items, the first three
- // days (11, 12, 13 August are skipped)
- assertEquals(7, maverage.getItemCount());
- double value = maverage.getValue(0).doubleValue();
- assertEquals(14.1, value, EPSILON);
- value = maverage.getValue(1).doubleValue();
- assertEquals(13.4, value, EPSILON);
- value = maverage.getValue(2).doubleValue();
- assertEquals(14.433333333333, value, EPSILON);
- value = maverage.getValue(3).doubleValue();
- assertEquals(14.933333333333, value, EPSILON);
- value = maverage.getValue(4).doubleValue();
- assertEquals(19.8, value, EPSILON);
- value = maverage.getValue(5).doubleValue();
- assertEquals(15.25, value, EPSILON);
- value = maverage.getValue(6).doubleValue();
- assertEquals(12.5, value, EPSILON);
- }
- /**
- * Creates a sample series.
- *
- * @return A sample series.
- */
- private TimeSeries createDailyTimeSeries1() {
- TimeSeries series = new TimeSeries("Series 1", Day.class);
- series.add(new Day(11, MonthConstants.AUGUST, 2003), 11.2);
- series.add(new Day(13, MonthConstants.AUGUST, 2003), 13.8);
- series.add(new Day(17, MonthConstants.AUGUST, 2003), 14.1);
- series.add(new Day(18, MonthConstants.AUGUST, 2003), 12.7);
- series.add(new Day(19, MonthConstants.AUGUST, 2003), 16.5);
- series.add(new Day(20, MonthConstants.AUGUST, 2003), 15.6);
- series.add(new Day(25, MonthConstants.AUGUST, 2003), 19.8);
- series.add(new Day(27, MonthConstants.AUGUST, 2003), 10.7);
- series.add(new Day(28, MonthConstants.AUGUST, 2003), 14.3);
- return series;
- }
- }
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