test/jdk/com/sun/jdi/NewInstanceTest.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/**
 * @test
 * @bug 4419450
 * @summary Test newInstance() for arrays - currently covers
 * only reference type arrays (see bug #4450091).
 * @author Robert Field
 *
 * @run build TestScaffold VMConnection TargetListener TargetAdapter
 * @run compile -g NewInstanceTest.java
 * @run driver NewInstanceTest
 */
import com.sun.jdi.*;
import com.sun.jdi.event.*;
import com.sun.jdi.request.*;

import java.util.*;

    /********** target program **********/

interface IfcFoo {
}
class ClsFoo implements IfcFoo {
}

class NewInstanceTarg {
    static ClsFoo aFoo = new ClsFoo();

    static Object[] objArray = new Object[10];
    static ClsFoo[] clsArray = new ClsFoo[10];
    static IfcFoo[] ifc0Array = new IfcFoo[10];
    static IfcFoo[] ifcArray = {aFoo, aFoo};

    public static void main(String[] args){
        System.out.println("Howdy!");
        System.out.println("Goodbye from NewInstanceTarg!");
    }
}

    /********** test program **********/

public class NewInstanceTest extends TestScaffold {
    ReferenceType targetClass;

    NewInstanceTest (String args[]) {
        super(args);
    }

    public static void main(String[] args)      throws Exception {
        new NewInstanceTest(args).startTests();
    }

    /********** test assist **********/

    void makeArray(String fieldName) throws Exception {
        println("Making array for field: " + fieldName);
        Field arrayField = targetClass.fieldByName(fieldName);
        ArrayType arrayType = (ArrayType)arrayField.type();
        println("Type for " + fieldName + " is " + arrayType);
        ArrayReference arrayReference = arrayType.newInstance(20);
        println("Passed subtest: " + fieldName);
    }

    /********** test core **********/

    protected void runTests() throws Exception {
        /*
         * Get to the top of main()
         * to determine targetClass
         */
        BreakpointEvent bpe = startToMain("NewInstanceTarg");
        targetClass = bpe.location().declaringType();

        makeArray("objArray");
        makeArray("clsArray");
        makeArray("ifc0Array");
        makeArray("ifcArray");

        /*
         * resume the target until end
         */
        listenUntilVMDisconnect();

        /*
         * deal with results of test
         * if anything has called failure("foo") testFailed will be true
         */
        if (!testFailed) {
            println("NewInstanceTest: passed");
        } else {
            throw new Exception("NewInstanceTest: failed");
        }
    }
}