1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 package org.apache.commons.math.util; 18 19 import org.apache.commons.math.MathException; 20 21 import junit.framework.TestCase; 22 23 /** 24 * @version $Revision: 778522 $ $Date: 2009-05-25 18:24:50 -0400 (Mon, 25 May 2009) $ 25 */ 26 public class ContinuedFractionTest extends TestCase { 27 /** 28 * Constructor for ContinuedFractionTest. 29 * @param name 30 */ 31 public ContinuedFractionTest(String name) { 32 super(name); 33 } 34 35 public void testGoldenRatio(){ 36 ContinuedFraction cf = new ContinuedFraction() { 37 38 @Override 39 public double getA(int n, double x) { 40 return 1.0; 41 } 42 43 @Override 44 public double getB(int n, double x) { 45 return 1.0; 46 } 47 }; 48 49 try { 50 double gr = cf.evaluate(0.0, 10e-9); 51 assertEquals(1.61803399, gr, 10e-9); 52 } catch (MathException e) { 53 fail(e.getMessage()); 54 } 55 } 56 }