ConstantTest.java revision 12657:6ef01bd40ce2 
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 jdk.vm.ci.runtime.test.ConstantTest
32 */
33package jdk.vm.ci.runtime.test;
34
35import jdk.vm.ci.meta.JavaConstant;
36import org.junit.Assert;
37import org.junit.Test;
38
39public 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}
52