/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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*/
/*
* @test
* @bug 6276988
* @summary All enum constants in a class should share a single "universe".
*/
import java.lang.reflect.Field;
import java.math.RoundingMode;
import java.util.EnumSet;
public class OneUniverse {
private static final Field universeField;
static {
try {
universeField = EnumSet.class.getDeclaredField("universe");
} catch (NoSuchFieldException e) {
throw new AssertionError(e);
}
universeField.setAccessible(true);
}
public static void main(String... args) {
EnumSet<RoundingMode> noneSet = EnumSet.noneOf(RoundingMode.class);
EnumSet<RoundingMode> allSet = EnumSet.allOf(RoundingMode.class);
if (getUniverse(noneSet) != getUniverse(allSet)) {
throw new AssertionError(
"Multiple universes detected. Inform the bridge!");
}
}
private static <E extends Enum<E>> Enum<E>[] getUniverse(EnumSet<E> set) {
try {
return (Enum<E>[]) universeField.get(set);
} catch (IllegalAccessException e) {
throw new AssertionError(e);
}
}
}