code: ///////////////////////////////////////////////////////////////////////////////
  // For information as to what this class does, see the Javadoc, below.       //
  // Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,       //
  // 2007, 2008, 2009, 2010, 2014, 2015 by Peter Spirtes, Richard Scheines, Joseph   //
  // Ramsey, and Clark Glymour.                                                //
  //                                                                           //
  // This program is free software; you can redistribute it and/or modify      //
  // it under the terms of the GNU General Public License as published by      //
  // the Free Software Foundation; either version 2 of the License, or         //
  // (at your option) any later version.                                       //
  //                                                                           //
  // This program 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 General Public License for more details.                              //
  //                                                                           //
  // You should have received a copy of the GNU General Public License         //
  // along with this program; if not, write to the Free Software               //
  // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA //
  ///////////////////////////////////////////////////////////////////////////////
  
  package edu.cmu.tetrad.gene.tetrad.gene.history;
  
  import junit.framework.Test;
  import junit.framework.TestCase;
  import junit.framework.TestSuite;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * Tests the Polynomial class.
   *
   * @author Joseph Ramsey jdramsey@andrew.cmu.edu
   */
  public class TestPolynomial extends TestCase {
  
      /**
       * Standard constructor for JUnit test cases.
       */
      public TestPolynomial(String name) {
          super(name);
      }
  
      /**
       * Tests to make sure that null parent throw an exception.
       */
      public void testConstruction() {
          PolynomialTerm term0 = new PolynomialTerm(1.0, new int[]{0});
          PolynomialTerm term1 = new PolynomialTerm(1.0, new int[]{1});
          PolynomialTerm term2 = new PolynomialTerm(1.0, new int[]{2, 3});
  
          List terms = new ArrayList();
          terms.add(term0);
          terms.add(term1);
          terms.add(term2);
  
          Polynomial p = new Polynomial(terms);
  
          System.out.println(p);
      }
  
      /**
       * Test the evaluation of terms.
       */
      public void testEvaluation() {
          PolynomialTerm term0 = new PolynomialTerm(1.0, new int[]{0});
          PolynomialTerm term1 = new PolynomialTerm(1.0, new int[]{1});
          PolynomialTerm term2 = new PolynomialTerm(1.0, new int[]{2, 3});
  
          List terms = new ArrayList();
          terms.add(term0);
          terms.add(term1);
          terms.add(term2);
  
          Polynomial p = new Polynomial(terms);
  
          double[] values = new double[]{1.0, 2.0, 3.0, 4.0};
  
          assertEquals(15.0, p.evaluate(values), 0.00001);
      }
  
      /**
       * This method uses reflection to collect up all of the test methods from
       * this class and return them to the test runner.
       */
      public static Test suite() {
  
          // Edit the name of the class in the parens to match the name
          // of this class.
          return new TestSuite(TestPolynomial.class);
      }
  }
  
  
  
  
  
  