1 /* 2 * Copyright (c) 2014, 2016, 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 * @requires vm.jvmci 27 * @library ../../../../../ 28 * @modules jdk.internal.vm.ci/jdk.vm.ci.meta 29 * jdk.internal.vm.ci/jdk.vm.ci.runtime 30 * java.base/jdk.internal.misc 31 * @run junit/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI -Djvmci.Compiler=null jdk.vm.ci.runtime.test.ConstantTest 32 */ 33 package jdk.vm.ci.runtime.test; 34 35 import jdk.vm.ci.meta.JavaConstant; 36 import org.junit.Assert; 37 import org.junit.Test; 38 39 public class ConstantTest extends FieldUniverse { 40 41 @Test 42 public void testNegativeZero() { 43 Assert.assertTrue("Constant for 0.0f must be different from -0.0f", JavaConstant.FLOAT_0 != JavaConstant.forFloat(-0.0F)); 44 Assert.assertTrue("Constant for 0.0d must be different from -0.0d", JavaConstant.DOUBLE_0 != JavaConstant.forDouble(-0.0d)); 45 } 46 47 @Test 48 public void testNullIsNull() { 49 Assert.assertTrue(JavaConstant.NULL_POINTER.isNull()); 50 } 51 }