/*

 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * 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,

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 *

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package jdk.jfr.jvm;

import static jdk.test.lib.Asserts.assertGreaterThan;

import static jdk.test.lib.Asserts.assertNE;

import jdk.jfr.internal.JVM;

import jdk.jfr.internal.Type;

/**

 * @test TestClassId

 * @key jfr

 * @requires vm.hasJFR

 * @library /test/lib

 * @modules jdk.jfr/jdk.jfr.internal

 * @run main/othervm jdk.jfr.jvm.TestClassId

 */

public class TestClassId {

    public static void main(String... args) {

        assertClassIds();

        JVM jvm = JVM.getJVM();

        jvm.createNativeJFR();

        assertClassIds();

        jvm.destroyNativeJFR();

        assertClassIds();

    }

    private static void assertClassIds() {

        long doubleClassId = Type.getTypeId(Double.class);

        assertGreaterThan(doubleClassId, 0L, "Class id must be greater than 0");

        long floatClassId = Type.getTypeId(Float.class);

        assertNE(doubleClassId, floatClassId, "Different classes must have different class ids");

    }

}