1 /*
   2  * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  * 
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  * 
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  * 
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  * 
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 package org.openjdk.tests.java.util.functions;
  26 
  27 import java.util.functions.DoubleUnaryOperator;
  28 import org.testng.annotations.AfterMethod;
  29 import org.testng.annotations.AfterClass;
  30 import org.testng.annotations.BeforeMethod;
  31 import org.testng.annotations.BeforeClass;
  32 import org.testng.annotations.Test;
  33 import static org.testng.Assert.*;
  34 
  35 /**
  36  *
  37  * @author Jim Gish <jim.gish@oracle.com>
  38  */
  39 public class DoubleUnaryOperatorTest {
  40     
  41     public DoubleUnaryOperatorTest() {
  42     }
  43     
  44     public void testOperate() {
  45         double operand = 2D;
  46         DoubleUnaryOperator instance = new DoubleUnaryOperatorImpl();
  47         double expResult = 10D;
  48         double result = instance.operate(operand);
  49         assertEquals(result, expResult, 0.1D /* delta for equality test */ );
  50     }
  51 
  52     public class DoubleUnaryOperatorImpl implements DoubleUnaryOperator {
  53 
  54         public double operate(double operand) {
  55             // multiply by 5
  56             return operand * 5D;
  57         }
  58     }
  59 }