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 }