1   /*
2    * Copyright 2003-2004 The Apache Software Foundation.
3    * 
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    * 
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    * 
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.apache.commons.math.util;
17  
18  import org.apache.commons.math.MathException;
19  
20  import junit.framework.TestCase;
21  
22  /**
23   * @version $Revision: 201916 $ $Date: 2005-06-26 15:25:41 -0700 (Sun, 26 Jun 2005) $
24   */
25  public class ContinuedFractionTest extends TestCase {
26      /**
27       * Constructor for ContinuedFractionTest.
28       * @param name
29       */
30      public ContinuedFractionTest(String name) {
31          super(name);
32      }
33  
34      public void testGoldenRation(){
35          ContinuedFraction cf = new ContinuedFraction() {
36              public double getA(int n, double x) {
37                  return 1.0;
38              }
39  
40              public double getB(int n, double x) {
41                  return 1.0;
42              }
43          };
44          
45          try {
46              double gr = cf.evaluate(0.0, 10e-9);
47              assertEquals(1.61803399, gr, 10e-9);
48          } catch (MathException e) {
49              fail(e.getMessage());
50          }
51      }
52  }