1 /* 2 * Copyright (c) 2014, 2015, 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 (os.simpleArch == "x64" | os.simpleArch == "sparcv9" | os.simpleArch == "aarch64") 27 * @library ../../../../../ 28 * @modules jdk.vm.ci/jdk.vm.ci.meta 29 * jdk.vm.ci/jdk.vm.ci.runtime 30 * java.base/jdk.internal.misc 31 * @build jdk.vm.ci.runtime.test.ConstantTest 32 * @run junit/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI jdk.vm.ci.runtime.test.ConstantTest 33 */ 34 // * @compile ConstantTest.java FieldUniverse.java TypeUniverse.java TestMetaAccessProvider.java 35 package jdk.vm.ci.runtime.test; 36 37 import org.junit.Assert; 38 import org.junit.Test; 39 40 import jdk.vm.ci.meta.JavaConstant; 41 42 public class ConstantTest extends FieldUniverse { 43 44 @Test 45 public void testNegativeZero() { 46 Assert.assertTrue("Constant for 0.0f must be different from -0.0f", JavaConstant.FLOAT_0 != JavaConstant.forFloat(-0.0F)); 47 Assert.assertTrue("Constant for 0.0d must be different from -0.0d", JavaConstant.DOUBLE_0 != JavaConstant.forDouble(-0.0d)); 48 } 49 50 @Test 51 public void testNullIsNull() { 52 Assert.assertTrue(JavaConstant.NULL_POINTER.isNull()); 53 } 54 }