01: /*
02: * Copyright 2003-2004 The Apache Software Foundation.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
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: }
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