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 }