    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  }