src/test/org/apache/commons/math/util/ContinuedFractionTest.java

/*
 * Copyright 2003-2004 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.commons.math.util;

import org.apache.commons.math.MathException;

import junit.framework.TestCase;

/**
 * @version $Revision$ $Date$
 */
public class ContinuedFractionTest extends TestCase {
    /**
     * Constructor for ContinuedFractionTest.
     * @param name
     */
    public ContinuedFractionTest(String name) {
        super(name);
    }

    public void testGoldenRation(){
        ContinuedFraction cf = new ContinuedFraction() {
            public double getA(int n, double x) {
                return 1.0;
            }

            public double getB(int n, double x) {
                return 1.0;
            }
        };
        
        try {
            double gr = cf.evaluate(0.0, 10e-9);
            assertEquals(1.61803399, gr, 10e-9);
        } catch (MathException e) {
            fail(e.getMessage());
        }
    }
}