J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2006-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * @test |
| 26 | * @bug 6276988 |
| 27 | * @summary All enum constants in a class should share a single "universe". |
| 28 | */ |
| 29 | |
| 30 | import java.lang.reflect.Field; |
| 31 | import java.math.RoundingMode; |
| 32 | import java.util.EnumSet; |
| 33 | |
| 34 | public class OneUniverse { |
| 35 | |
| 36 | private static final Field universeField; |
| 37 | |
| 38 | static { |
| 39 | try { |
| 40 | universeField = EnumSet.class.getDeclaredField("universe"); |
| 41 | } catch (NoSuchFieldException e) { |
| 42 | throw new AssertionError(e); |
| 43 | } |
| 44 | universeField.setAccessible(true); |
| 45 | } |
| 46 | |
| 47 | public static void main(String... args) { |
| 48 | |
| 49 | EnumSet<RoundingMode> noneSet = EnumSet.noneOf(RoundingMode.class); |
| 50 | EnumSet<RoundingMode> allSet = EnumSet.allOf(RoundingMode.class); |
| 51 | |
| 52 | if (getUniverse(noneSet) != getUniverse(allSet)) { |
| 53 | throw new AssertionError( |
| 54 | "Multiple universes detected. Inform the bridge!"); |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | private static <E extends Enum<E>> Enum<E>[] getUniverse(EnumSet<E> set) { |
| 59 | try { |
| 60 | return (Enum<E>[]) universeField.get(set); |
| 61 | } catch (IllegalAccessException e) { |
| 62 | throw new AssertionError(e); |
| 63 | } |
| 64 | } |
| 65 | } |