ClearDirectivesStackTest.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/*
 * @test
 * @key randomness
 * @bug 8137167
 * @summary Tests clear JCMD command
 * @modules java.base/jdk.internal.misc
 * @library /test/lib /
 *
 * @build sun.hotspot.WhiteBox
 * @run driver jdk.test.lib.helpers.ClassFileInstaller sun.hotspot.WhiteBox
 * @run driver compiler.compilercontrol.jcmd.ClearDirectivesStackTest
 */

package compiler.compilercontrol.jcmd;

import compiler.compilercontrol.share.AbstractTestBase;
import compiler.compilercontrol.share.method.MethodDescriptor;
import compiler.compilercontrol.share.scenario.Command;
import compiler.compilercontrol.share.scenario.CommandGenerator;
import compiler.compilercontrol.share.scenario.CompileCommand;
import compiler.compilercontrol.share.scenario.JcmdCommand;
import compiler.compilercontrol.share.scenario.Scenario;
import jdk.test.lib.Utils;

import java.lang.reflect.Executable;

public class ClearDirectivesStackTest extends AbstractTestBase {
    private static final int AMOUNT = Utils.getRandomInstance().nextInt(100);
    private final CommandGenerator cmdGen = new CommandGenerator();

    public static void main(String[] args) {
        new ClearDirectivesStackTest().test();
    }

    @Override
    public void test() {
        Scenario.Builder builder = Scenario.getBuilder();
        // Add some commands with JCMD
        for (int i = 0; i < AMOUNT; i++) {
            Executable exec = Utils.getRandomElement(METHODS).first;
            MethodDescriptor methodDescriptor = getValidMethodDescriptor(exec);
            CompileCommand compileCommand = new JcmdCommand(
                    cmdGen.generateCommand(), methodDescriptor,
                    cmdGen.generateCompiler(), Scenario.Type.JCMD,
                    Scenario.JcmdType.ADD);
            builder.add(compileCommand);
        }
        // clear the stack
        builder.add(new JcmdCommand(Command.NONEXISTENT, null, null,
                Scenario.Type.JCMD, Scenario.JcmdType.CLEAR));
        // print all directives after the clear
        builder.add(new JcmdCommand(Command.NONEXISTENT, null, null,
                Scenario.Type.JCMD, Scenario.JcmdType.PRINT));
        Scenario scenario = builder.build();
        scenario.execute();
    }
}