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.concurrent.atomic.AtomicLong;
  28 import java.util.functions.LongUnaryOperator;
  29 import org.testng.annotations.AfterMethod;
  30 import org.testng.annotations.AfterClass;
  31 import org.testng.annotations.BeforeMethod;
  32 import org.testng.annotations.BeforeClass;
  33 import org.testng.annotations.Test;
  34 import static org.testng.Assert.*;
  35 
  36 /**
  37  *
  38  * @author Jim Gish <jim.gish@oracle.com>
  39  */
  40  @Test
  41  public class LongUnaryOperatorTest {
  42     
  43     public LongUnaryOperatorTest() {
  44     }
  45     
  46 
  47     /**
  48      * Test of operate method, of class LongUnaryOperator.
  49      */
  50     public void testOperate() {
  51         long operand = 0L;
  52         LongUnaryOperator instance = new LongUnaryOperatorImpl();
  53         long expResult = 3L;
  54         long result = instance.operate(operand);
  55         assertEquals(result, expResult);
  56     }
  57     
  58     public void testUpdateOps() {
  59         AtomicLong atomLong = new AtomicLong(3);
  60         // make sure we the updated value is returned
  61         assertEquals( atomLong.updateAndGet(x -> x + 1), 4 );
  62         // then the previous value is returned
  63         assertEquals( atomLong.getAndUpdate(x -> x + 1), 4 );
  64         // finally, verify that the update was successful
  65         assertEquals( atomLong.get(), 5 );
  66     };
  67     
  68     public class LongUnaryOperatorImpl implements LongUnaryOperator {
  69 
  70         public long operate(long operand) {
  71             // inc by 3
  72             return operand + 3L;
  73         }
  74     }
  75 }