1 /*
   2  * Copyright (c) 2013, 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.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 8026844
  27  * @summary Test repeating subtractExact
  28  * @compile SubExactIRepeatTest.java Verify.java
  29  * @run main SubExactIRepeatTest
  30  *
  31  */
  32 
  33 import java.lang.ArithmeticException;
  34 
  35 public class SubExactIRepeatTest {
  36     public static void main(String[] args) {
  37         runTest(new Verify.SubExactI());
  38     }
  39 
  40     public static int nonExact(int x, int y, Verify.BinaryMethod method) {
  41         int result = method.unchecked(x, y);
  42         result += method.unchecked(x, y);
  43         result += method.unchecked(x, y);
  44         result += method.unchecked(x, y);
  45         return result;
  46     }
  47 
  48     public static void runTest(Verify.BinaryMethod method) {
  49         java.util.Random rnd = new java.util.Random();
  50         for (int i = 0; i < 50000; ++i) {
  51             int x = Integer.MIN_VALUE + 10;
  52             int y = Integer.MAX_VALUE - 10 + rnd.nextInt(5);
  53 
  54             int c = rnd.nextInt() / 2;
  55             int d = rnd.nextInt() / 2;
  56 
  57             int a = catchingExact(x, y, method);
  58 
  59             if (a != 36) {
  60                 throw new RuntimeException("a != 36 : " + a);
  61             }
  62 
  63             int b = nonExact(c, d, method);
  64             int n = exact(c, d, method);
  65 
  66 
  67             if (n != b) {
  68                 throw new RuntimeException("n != b : " + n + " != " + b);
  69             }
  70         }
  71     }
  72 
  73     public static int exact(int x, int y, Verify.BinaryMethod method) {
  74         int result = 0;
  75         result += method.checkMethod(x, y);
  76         result += method.checkMethod(x, y);
  77         result += method.checkMethod(x, y);
  78         result += method.checkMethod(x, y);
  79         return result;
  80     }
  81 
  82     public static int catchingExact(int x, int y, Verify.BinaryMethod method) {
  83         int result = 0;
  84         try {
  85             result += 5;
  86             result = method.checkMethod(x, y);
  87         } catch (ArithmeticException e) {
  88             result += 1;
  89         }
  90         try {
  91             result += 6;
  92 
  93             result += method.checkMethod(x, y);
  94         } catch (ArithmeticException e) {
  95             result += 2;
  96         }
  97         try {
  98             result += 7;
  99             result += method.checkMethod(x, y);
 100         } catch (ArithmeticException e) {
 101             result += 3;
 102         }
 103         try {
 104             result += 8;
 105             result += method.checkMethod(x, y);
 106         } catch (ArithmeticException e) {
 107             result += 4;
 108         }
 109         return result;
 110     }
 111 }