test/java/lang/instrument/RemoveAbsentTransformerTest.java

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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/**
 * @test
 * @bug 4882798
 * @summary remove an transformer that was never added
 * @author Gabriel Adauto, Wily Technology
 *
 * @run build RemoveAbsentTransformerTest
 * @run shell MakeJAR.sh redefineAgent
 * @run main/othervm -javaagent:redefineAgent.jar RemoveAbsentTransformerTest RemoveAbsentTransformerTest
 */
import java.lang.instrument.*;

public class
RemoveAbsentTransformerTest
    extends ATransformerManagementTestCase
{

    /**
     * Constructor for RemoveAbsentTransformerTest.
     * @param name
     */
    public RemoveAbsentTransformerTest(String name)
    {
        super(name);
    }

    public static void
    main (String[] args)
        throws Throwable {
        ATestCaseScaffold   test = new RemoveAbsentTransformerTest(args[0]);
        test.runTest();
    }

    protected final void
    doRunTest()
        throws Throwable {
        testRemoveNonExistentTransformer();
    }

    /**
     * Remove transformers that were not added
     */
    public void
    testRemoveNonExistentTransformer()
    {
        boolean result;
        ClassFileTransformer moreThanMeetsTheEye = new MyClassFileTransformer("NonExistent");

        addTransformerToManager(fInst, moreThanMeetsTheEye);
        removeTransformerFromManager(fInst, moreThanMeetsTheEye);
        result = fInst.removeTransformer(new MyClassFileTransformer("NonExistent2"));
        assertTrue(!result);
        result = fInst.removeTransformer(moreThanMeetsTheEye);
        assertTrue(!result);

        verifyTransformers(fInst);
    }

}