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Java example source code file (ArrayRangeTest.java)

This example Java source code file (ArrayRangeTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

arraylist, arrayrangetarg, arrayrangetest, arrayreference, breakpointevent, fail, field, indexoutofboundsexception, jdi, list, sample, string, stringbuffer, throwable, util, value

The ArrayRangeTest.java Java example source code

/*
 * Copyright (c) 2001, 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.
 *
 * 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,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/**
 *  @test
 *  @bug 4439631
 *  @bug 4448721
 *  @bug 4448603
 *  @summary Test access to ranges within ArrayReferences
 *
 *  @author Robert Field
 *
 *  @run build TestScaffold VMConnection TargetListener TargetAdapter
 *  @run compile -g ArrayRangeTest.java
 *  @run main ArrayRangeTest
 */
import com.sun.jdi.*;
import com.sun.jdi.event.*;
import com.sun.jdi.request.*;

import java.util.*;

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

class ArrayRangeTarg {
    static int[] emptyArray = {};
    static int[] fullArray = {0, 100, 200, 300, 400};

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

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

public class ArrayRangeTest extends TestScaffold {
    ReferenceType targetClass;

    class Sample {
        Sample(String name, ArrayReference arrRef, int[] expected) {
            this.name = name;
            this.arrRef = arrRef;
            this.expected = expected;
        }
        String name;
        ArrayReference arrRef;
        int[] expected;
    }

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

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

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

    String arr(int a[]) {
        StringBuffer buf = new StringBuffer();
        buf.append('[');
        if (a.length > 0) {
            buf.append(a[0]);
            for (int i = 1; i < a.length; ++i) {
                buf.append(',');
                buf.append(a[i]);
            }
        }
        buf.append(']');
        return buf.toString();
    }

    void getValueGood(Sample samp, int index) {
        try {
            Value val = samp.arrRef.getValue(index);
            int ival = ((IntegerValue)val).value();
            if (ival != samp.expected[index]) {
                failure("FAIL - " + samp.name +
                        ".getValue(" + index + ") - wrong value=" + ival);
            } else {
                println("pass - " + samp.name +
                        ".getValue(" + index + ") - value=" + ival);
            }
        } catch (Throwable exc) {
            failure("FAIL - " + samp.name +
                    ".getValue(" + index + ") - unexpected: " + exc);
        }
    }

    void getValueBad(Sample samp, int index) {
        try {
            Value val = samp.arrRef.getValue(index);
            failure("FAIL - " + samp.name +
                    ".getValue(" + index + ") - no expected exception");
        } catch (IndexOutOfBoundsException exc) {
            println("pass - " + samp.name +
                    ".getValue(" + index + ") - got expected: " + exc);
        } catch (Throwable exc) {
            failure("FAIL - " + samp.name +
                    ".getValue(" + index + ") - unexpected: " + exc);
        }
    }

    void getValuesGood(Sample samp) {
        String desc = samp.name + ".getValues()";
        try {
            List vals = samp.arrRef.getValues();
            if (vals.size() != samp.expected.length) {
                failure("FAIL - " + desc +
                        " - wrong size=" + vals.size() +
                        " , expected: " + samp.expected.length);
            }
            for (int index = 0; index < vals.size(); ++index) {
                int ival = ((IntegerValue)vals.get(index)).value();
                if (ival != samp.expected[index]) {
                    failure("FAIL - " + desc +
                            " - wrong value=" + ival);
                    return;
                }
            }
            println("pass - " + samp.name + ".getValues())");
        } catch (Throwable exc) {
            failure("FAIL - " + desc  +
                    " - unexpected: " + exc);
        }
    }

    void getValuesGood(Sample samp, int index, int length) {
        try {
            List vals = samp.arrRef.getValues(index, length);
            if (vals.size() !=
                 ((length==-1)? (samp.expected.length - index) : length)) {
                failure("FAIL - " + samp.name + ".getValues(" +
                        index + ", " + length + ") - wrong size=" +
                        vals.size());
            }
            for (int i = 0; i < vals.size(); ++i) {
                int ival = ((IntegerValue)vals.get(i)).value();
                if (ival != samp.expected[index + i]) {
                    failure("FAIL - " + samp.name + ".getValues(" +
                            index + ", " + length + ") - wrong value=" +
                            ival);
                    return;
                }
            }
            println("pass - " + samp.name + ".getValues(" +
                    index + ", " + length + "))");
        } catch (Throwable exc) {
            failure("FAIL - " + samp.name + ".getValues(" +
                    index + ", " + length + ") - unexpected: " + exc);
        }
    }

    void getValuesBad(Sample samp, int index, int length) {
        try {
            List vals = samp.arrRef.getValues(index, length);
            failure("FAIL - " + samp.name + ".getValues(" +
                        index + ", " + length + ") - no expected exception");
        } catch (IndexOutOfBoundsException exc) {
            println("pass - " + samp.name + ".getValue(" +
                    index + ", " + length + ") - got expected: " + exc);
        } catch (Throwable exc) {
            failure("FAIL - " + samp.name + ".getValues(" +
                    index + ", " + length + ") - unexpected: " + exc);
        }
    }

    void setValueGood(Sample samp, int index, int ival) {
        try {
            Value val = vm().mirrorOf(ival);
            samp.arrRef.setValue(index, val);
            println("pass - " + samp.name +
                    ".setValue(" + index + ", ..)");
        } catch (Throwable exc) {
            failure("FAIL - " + samp.name +
                    ".setValue(" + index + ",...) - unexpected: " + exc);
        }
    }

    void setValueBad(Sample samp, int index, int ival) {
        try {
            Value val = vm().mirrorOf(ival);
            samp.arrRef.setValue(index, val);
            failure("FAIL - " + samp.name +
                    ".setValue(" + index + ", ..) - no expected exception");
        } catch (IndexOutOfBoundsException exc) {
            println("pass - " + samp.name +
                    ".setValue(" + index + ",...) - got expected: " + exc);
        } catch (Throwable exc) {
            failure("FAIL - " + samp.name +
                    ".setValue(" + index + ",...) - unexpected: " + exc);
        }
    }

    void setValuesGood(Sample samp, int[] valArray) {
        String desc = samp.name + ".setValues(" + arr(valArray) + ")";
        try {
            List values = new ArrayList();
            for (int i = 0; i < valArray.length; ++i) {
                Value val = vm().mirrorOf(valArray[i]);
                values.add(val);
            }
            samp.arrRef.setValues(values);
            println("pass - " + desc);
        } catch (Throwable exc) {
            failure("FAIL - " + desc + " - unexpected: " + exc);
        }
    }

    void setValuesGood(Sample samp, int index, int[] valArray,
                       int srcInx, int length) {
        String desc = samp.name + ".setValues(" + index + ", " +
            arr(valArray) + ", " + srcInx + ", " + length + ")";
        try {
            List values = new ArrayList();
            for (int i = 0; i < valArray.length; ++i) {
                Value val = vm().mirrorOf(valArray[i]);
                values.add(val);
            }
            samp.arrRef.setValues(index, values, srcInx, length);
            println("pass - " + desc);
        } catch (Throwable exc) {
            failure("FAIL - " + desc + " - unexpected: " + exc);
        }
    }

    void setValuesBad(Sample samp, int index, int[] valArray,
                       int srcInx, int length) {
        String desc = samp.name + ".setValues(" + index + ", " +
            arr(valArray) + ", " + srcInx + ", " + length + ")";
        try {
            List values = new ArrayList();
            for (int i = 0; i < valArray.length; ++i) {
                Value val = vm().mirrorOf(valArray[i]);
                values.add(val);
            }
            samp.arrRef.setValues(index, values, srcInx, length);
            failure("FAIL - " + desc + " - no expected exception");
        } catch (IndexOutOfBoundsException exc) {
            println("pass - " + desc + " - got expected: " + exc);
        } catch (Throwable exc) {
            failure("FAIL - " + desc + " - unexpected: " + exc);
        }
    }

    void check(Sample samp, int[] expectArray) {
        String desc = samp.name + " - check - " + arr(expectArray);

        try {
            List vals = samp.arrRef.getValues();
            if (vals.size() != expectArray.length) {
                failure("FAIL - " + desc +
                        " - wrong size=" + vals.size() +
                        " , expected: " + expectArray.length);
            }
            for (int index = 0; index < vals.size(); ++index) {
                int ival = ((IntegerValue)vals.get(index)).value();
                if (ival != expectArray[index]) {
                    failure("FAIL - " + desc +
                            " - wrong value=" + ival);
                    return;
                }
            }
            println("pass - " + desc);
        } catch (Throwable exc) {
            failure("FAIL - " + desc  +
                    " - unexpected: " + exc);
        }
    }

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

    protected void runTests() throws Exception {
        /*
         * Get to the top of main() to determine targetClass
         */
        BreakpointEvent bpe = startToMain("ArrayRangeTarg");
        targetClass = bpe.location().declaringType();
        Field fullField = targetClass.fieldByName("fullArray");
        Field emptyField = targetClass.fieldByName("emptyArray");
        ArrayReference emptyAR = (ArrayReference)targetClass.getValue(emptyField);
        ArrayReference fullAR = (ArrayReference)targetClass.getValue(fullField);
        Sample full = new Sample("full", fullAR, ArrayRangeTarg.fullArray);
        Sample empty = new Sample("empty", emptyAR, ArrayRangeTarg.emptyArray);

        getValueGood(full, 0);
        getValueGood(full, 4);

        // index < 0
        getValueBad(full, -1);
        getValueBad(full, -2);
        getValueBad(empty, -1);
        getValueBad(empty, -2);

        // index >= length
        getValueBad(full, 5);
        getValueBad(empty, 0);
        getValueBad(empty, 5);

        getValuesGood(full);
        getValuesGood(empty);

        getValuesGood(full, 0, 5);
        getValuesGood(full, 0, 4);
        getValuesGood(full, 1, 4);
        getValuesGood(full, 5, 0);
        getValuesGood(full, 0, 0);
        getValuesGood(full, 0, -1);
        getValuesGood(full, 1, -1);
        getValuesGood(full, 5, -1);

        getValuesGood(empty, 0, 0);
        getValuesGood(empty, 0, -1);

        // index < 0
        getValuesBad(full, -1, 0);
        getValuesBad(full, -1, 3);
        getValuesBad(full, -1, -1);
        getValuesBad(empty, -1, 0);
        getValuesBad(full, -2, 0);
        getValuesBad(full, -2, 3);
        getValuesBad(full, -2, -1);
        getValuesBad(empty, -2, 0);

        // index > length()
        getValuesBad(full, 6, 0);
        getValuesBad(full, 6, -1);
        getValuesBad(empty, 1, 0);
        getValuesBad(empty, 1, -1);

        // length < 0
        getValuesBad(full, 0, -2);
        getValuesBad(empty, 0, -2);

        // index + length > length()
        getValuesBad(full, 0, 6);
        getValuesBad(full, 1, 5);
        getValuesBad(full, 2, 4);
        getValuesBad(full, 5, 1);
        getValuesBad(empty, 0, 1);

        setValueGood(full, 0, 55);
        setValueGood(full, 4, 66);

        // index < 0
        setValueBad(full, -1, 77);
        setValueBad(full, -2, 77);

        // index > length()
        setValueBad(full, 5, 77);
        setValueBad(full, 6, 77);

        check(full, new int[] {55, 100, 200, 300, 66});

        // index < 0
        setValueBad(empty, -1, 77);
        setValueBad(empty, -2, 77);

        // index > length()
        setValueBad(empty, 0, 77);
        setValueBad(empty, 1, 77);

        setValuesGood(full, new int[] {40, 41, 42});
        setValuesGood(full, new int[] {});

        check(full, new int[] {40, 41, 42, 300, 66});

        setValuesGood(full, new int[] {99, 51, 52, 53, 54, 55});
        setValuesGood(full, new int[] {50});

        check(full, new int[] {50, 51, 52, 53, 54});

        setValuesGood(empty, new int[] {});
        setValuesGood(empty, new int[] {88});

        setValuesGood(full, 2, new int[] {30, 31, 32, 33, 34, 35}, 0, 3);
        setValuesGood(full, 0, new int[] {80}, 0, 1);

        check(full, new int[] {80, 51, 30, 31, 32});

        setValuesGood(full, 0, new int[] {90, 91, 92, 93, 94, 95}, 3, 3);
        setValuesGood(full, 4, new int[] {81}, 0, 1);

        check(full, new int[] {93, 94, 95, 31, 81});

        setValuesGood(full, 3, new int[] {60, 61, 62, 63}, 0, -1);
        setValuesGood(full, 0, new int[] {82}, 0, -1);

        check(full, new int[] {82, 94, 95, 60, 61});

        setValuesGood(full, 3, new int[] {20, 21, 22, 23}, 1, -1);
        setValuesGood(full, 1, new int[] {83, 84}, 1, -1);
        setValuesGood(full, 1, new int[] {}, 0, -1);
        setValuesGood(full, 2, new int[] {}, 0, 0);
        setValuesGood(full, 3, new int[] {99}, 0, 0);
        setValuesGood(full, 4, new int[] {99, 98}, 1, 0);

        check(full, new int[] {82, 84, 95, 21, 22});

        setValuesGood(empty, 0, new int[] {}, 0, -1);
        setValuesGood(empty, 0, new int[] {}, 0, 0);
        setValuesGood(empty, 0, new int[] {99}, 0, 0);
        setValuesGood(empty, 0, new int[] {99, 98}, 1, 0);

        // index < 0
        setValuesBad(full, -1, new int[] {30, 31, 32, 33, 34, 35}, 0, 0);
        setValuesBad(full, -1, new int[] {30, 31, 32, 33, 34, 35}, 0, -1);
        setValuesBad(full, -2, new int[] {30, 31, 32, 33, 34, 35}, 0, -1);
        setValuesBad(empty, -1, new int[] {}, 0, 0);
        setValuesBad(empty, -2, new int[] {}, 0, 0);

        // index > length()
        setValuesBad(full, 6, new int[] {30, 31, 32, 33, 34, 35}, 0, 1);
        setValuesBad(full, 6, new int[] {30, 31, 32, 33, 34, 35}, 0, -1);
        setValuesBad(empty, 1, new int[] {4}, 0, 0);
        setValuesBad(empty, 1, new int[] {}, 0, 0);
        setValuesBad(empty, 1, new int[] {}, 0, -1);

        // srcIndex < 0
        setValuesBad(full, 0, new int[] {90, 91, 92, 93, 94, 95}, -1, 3);
        setValuesBad(full, 0, new int[] {90, 91, 92, 93, 94, 95}, -1, 0);
        setValuesBad(full, 0, new int[] {90, 91, 92, 93, 94, 95}, -1, -1);
        setValuesBad(full, 0, new int[] {90, 91, 92, 93, 94, 95}, -2, -1);
        setValuesBad(full, 1, new int[] {}, -1, -1);
        setValuesBad(full, 2, new int[] {}, -1, 0);
        setValuesBad(empty, 0, new int[] {}, -1, 0);

        // srcIndex > values.size()
        setValuesBad(full, 0, new int[] {81}, 2, 0);
        setValuesBad(full, 0, new int[] {81}, 2, 1);
        setValuesBad(full, 0, new int[] {81}, 2, -1);
        setValuesBad(full, 4, new int[] {}, 1, 0);
        setValuesBad(full, 1, new int[] {}, 1, -1);
        setValuesBad(full, 2, new int[] {}, 1, 0);
        setValuesBad(empty, 0, new int[] {}, 1, 0);
        setValuesBad(empty, 0, new int[] {5}, 2, 0);

        // length < 0 (length != -1)
        setValuesBad(full, 3, new int[] {60, 61, 62, 63}, 0, -2);
        setValuesBad(full, 3, new int[] {}, 0, -2);

        // index + length > length()
        setValuesBad(full, 0, new int[] {20, 21, 22, 23, 24, 25, 26}, 0, 6);
        setValuesBad(full, 1, new int[] {20, 21, 22, 23, 24, 25, 26}, 0, 5);
        setValuesBad(full, 2, new int[] {20, 21, 22, 23, 24, 25, 26}, 0, 4);
        setValuesBad(full, 3, new int[] {20, 21, 22, 23, 24, 25, 26}, 0, 3);
        setValuesBad(full, 4, new int[] {20, 21, 22, 23, 24, 25, 26}, 0, 2);
        setValuesBad(full, 5, new int[] {20, 21, 22, 23, 24, 25, 26}, 0, 1);
        setValuesBad(full, 6, new int[] {20, 21, 22, 23, 24, 25, 26}, 0, 0);
        setValuesBad(full, 2, new int[] {20, 21, 22, 23, 24, 25, 26}, 1, 4);
        setValuesBad(full, 3, new int[] {20, 21, 22, 23, 24, 25, 26}, 1, 3);
        setValuesBad(full, 4, new int[] {20, 21, 22, 23, 24, 25, 26}, 2, 2);
        setValuesBad(full, 5, new int[] {20, 21, 22, 23, 24, 25, 26}, 3, 1);
        setValuesBad(full, 6, new int[] {20, 21, 22, 23, 24, 25, 26}, 4, 0);
        setValuesBad(empty, 0, new int[] {6}, 0, 1);

        // srcIndex + length > values.size()
        setValuesBad(full, 0, new int[] {82}, 0, 2);
        setValuesBad(full, 0, new int[] {82}, 1, 1);
        setValuesBad(full, 0, new int[] {82}, 2, 0);
        setValuesBad(full, 0, new int[] {20, 21, 22}, 0, 4);
        setValuesBad(full, 0, new int[] {20, 21, 22}, 1, 3);
        setValuesBad(full, 0, new int[] {20, 21, 22}, 2, 2);
        setValuesBad(full, 0, new int[] {20, 21, 22}, 3, 1);
        setValuesBad(full, 0, new int[] {20, 21, 22}, 4, 0);

        check(full, new int[] {82, 84, 95, 21, 22});

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

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

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