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: 1.8 $ $Date: 2004/02/21 21:35:18 $
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  }