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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.]
- *
- * ------------------------------
- * PolynomialFunction2DTests.java
- * ------------------------------
- * (C) Copyright 2009, by Object Refinery Limited and Contributors.
- *
- * Original Author: David Gilbert (for Object Refinery Limited);
- * Contributor(s): -;
- *
- * Changes
- * -------
- * 28-May-2009 : Version 1 (DG);
- *
- */
- package org.jfree.data.function;
- import java.util.Arrays;
- import org.jfree.chart.TestUtilities;
- import org.junit.Test;
- import static org.junit.Assert.assertEquals;
- import static org.junit.Assert.assertFalse;
- import static org.junit.Assert.assertTrue;
- /**
- * Tests for the {@link PolynomialFunction2D} class.
- */
- public class PolynomialFunction2DTest {
- /**
- * Some tests for the constructor.
- */
- @Test
- public void testConstructor() {
- PolynomialFunction2D f = new PolynomialFunction2D(new double[] {1.0,
- 2.0});
- assertTrue(Arrays.equals(new double[] {1.0, 2.0}, f.getCoefficients()));
- boolean pass = false;
- try {
- f = new PolynomialFunction2D(null);
- }
- catch (IllegalArgumentException e) {
- pass = true;
- }
- assertTrue(pass);
- }
- /**
- * Some checks for the getCoefficients() method.
- */
- @Test
- public void testGetCoefficients() {
- PolynomialFunction2D f = new PolynomialFunction2D(new double[] {1.0,
- 2.0});
- double[] c = f.getCoefficients();
- assertTrue(Arrays.equals(new double[] {1.0, 2.0}, c));
- // make sure that modifying the returned array doesn't change the
- // function
- c[0] = 99.9;
- assertTrue(Arrays.equals(new double[] {1.0, 2.0}, f.getCoefficients()));
- }
- /**
- * Some checks for the getOrder() method.
- */
- @Test
- public void testGetOrder() {
- PolynomialFunction2D f = new PolynomialFunction2D(new double[] {1.0,
- 2.0});
- assertEquals(1, f.getOrder());
- }
- /**
- * For datasets, the equals() method just checks keys and values.
- */
- @Test
- public void testEquals() {
- PolynomialFunction2D f1 = new PolynomialFunction2D(new double[] {1.0,
- 2.0});
- PolynomialFunction2D f2 = new PolynomialFunction2D(new double[] {1.0,
- 2.0});
- assertTrue(f1.equals(f2));
- f1 = new PolynomialFunction2D(new double[] {2.0, 3.0});
- assertFalse(f1.equals(f2));
- f2 = new PolynomialFunction2D(new double[] {2.0, 3.0});
- assertTrue(f1.equals(f2));
- }
- /**
- * Serialize an instance, restore it, and check for equality.
- */
- @Test
- public void testSerialization() {
- PolynomialFunction2D f1 = new PolynomialFunction2D(new double[] {1.0,
- 2.0});
- PolynomialFunction2D f2 = (PolynomialFunction2D)
- TestUtilities.serialised(f1);
- assertEquals(f1, f2);
- }
- /**
- * Objects that are equal should have the same hash code otherwise FindBugs
- * will tell on us...
- */
- @Test
- public void testHashCode() {
- PolynomialFunction2D f1 = new PolynomialFunction2D(new double[] {1.0,
- 2.0});
- PolynomialFunction2D f2 = new PolynomialFunction2D(new double[] {1.0,
- 2.0});
- assertEquals(f1.hashCode(), f2.hashCode());
- }
- }
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