1 /*

     2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

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

     4  *

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

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

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 /*

    25  * @test

    26  * @bug 8141615

    27  * @summary Tests new public methods at sun.reflect.ConstantPool

    28  * @modules java.base/jdk.internal.misc

    29  *          java.base/sun.reflect

    30  * @library /lib/testlibrary

    31  * @compile ConstantPoolTestDummy.jasm

    32  * @run main sun.reflect.constantPool.ConstantPoolTest

    33  */

    34 

    35 package sun.reflect.constantPool;

    36 

    37 import java.util.HashMap;

    38 import java.util.Map;

    39 import jdk.internal.misc.SharedSecrets;

    40 import jdk.testlibrary.Asserts;

    41 import sun.reflect.ConstantPool;

    42 

    43 public class ConstantPoolTest {

    44 

    45     private static final Class<?> TEST_CLASS = ConstantPoolTestDummy.class;

    46     private static final ConstantPool CP = SharedSecrets.getJavaLangAccess()

    47             .getConstantPool(TEST_CLASS);

    48 

    49     public static void main(String[] s) {

    50         for (TestCase testCase : TestCase.values()) {

    51             testCase.test();

    52         }

    53     }

    54 

    55     public static enum TestCase {

    56         GET_TAG_AT {

    57             {

    58                 referenceMap.put(1, ConstantPool.Tag.METHODREF);

    59                 referenceMap.put(2, ConstantPool.Tag.CLASS);

    60                 referenceMap.put(4, ConstantPool.Tag.UTF8);

    61                 referenceMap.put(10, ConstantPool.Tag.NAMEANDTYPE);

    62                 referenceMap.put(13, ConstantPool.Tag.LONG);

    63                 referenceMap.put(15, ConstantPool.Tag.INTEGER);

    64                 referenceMap.put(16, ConstantPool.Tag.INTERFACEMETHODREF);

    65                 referenceMap.put(21, ConstantPool.Tag.DOUBLE);

    66                 referenceMap.put(23, ConstantPool.Tag.STRING);

    67                 referenceMap.put(25, ConstantPool.Tag.INVOKEDYNAMIC);

    68                 referenceMap.put(29, ConstantPool.Tag.METHODHANDLE);

    69                 referenceMap.put(30, ConstantPool.Tag.METHODTYPE);

    70                 referenceMap.put(48, ConstantPool.Tag.FIELDREF);

    71                 referenceMap.put(52, ConstantPool.Tag.FLOAT);

    72             }

    73             @Override

    74             void testIndex(int cpi, Object reference) {

    75                 ConstantPool.Tag tagToVerify = CP.getTagAt(cpi);

    76                 ConstantPool.Tag tagToRefer = (ConstantPool.Tag) reference;

    77                 String msg = String.format("Method getTagAt works not as expected"

    78                         + "at CP entry #%d: got CP tag %s, but should be %s",

    79                         cpi, tagToVerify.name(), tagToRefer.name());

    80                 Asserts.assertEquals(tagToVerify, tagToRefer, msg);

    81             }

    82         },

    83         GET_CLASS_REF_INDEX_AT {

    84             {

    85                 referenceMap.put(1, 3);

    86                 referenceMap.put(16, 17);

    87                 referenceMap.put(32, 35);

    88                 referenceMap.put(34, 3);

    89                 referenceMap.put(48, 2);

    90             }

    91             @Override

    92             void testIndex(int cpi, Object reference) {

    93                 int indexToVerify = CP.getClassRefIndexAt(cpi);

    94                 int indexToRefer = (int) reference;

    95                 String msg = String.format("Method getClassRefIndexAt works not"

    96                         + " as expected at CP entry #%d:"

    97                         + " got index %d, but should be %d",

    98                         cpi, indexToVerify, indexToRefer);

    99                 Asserts.assertEquals(indexToVerify, indexToRefer, msg);

   100             }

   101         },

   102         GET_NAME_AND_TYPE_REF_INDEX_AT {

   103             {

   104                 referenceMap.put(1, 10);

   105                 referenceMap.put(16, 18);

   106                 referenceMap.put(25, 26);

   107                 referenceMap.put(32, 36);

   108                 referenceMap.put(34, 37);

   109                 referenceMap.put(48, 49);

   110             }

   111             @Override

   112             void testIndex(int cpi, Object reference) {

   113                 int indexToRefer = (int) reference;

   114                 int indexToVerify = CP.getNameAndTypeRefIndexAt(cpi);

   115                 String msg = String.format("Method getNameAndTypeRefIndexAt works"

   116                         + " not as expected at CP entry #%d:"

   117                         + " got index %d, but should be %d",

   118                         cpi, indexToVerify, indexToRefer);

   119                 Asserts.assertEquals(indexToVerify, indexToRefer, msg);

   120             }

   121         },

   122         GET_NAME_AND_TYPE_REF_INFO_AT {

   123             {

   124                 referenceMap.put(10, new String[]{"<init>", "()V"});

   125                 referenceMap.put(18, new String[]{"run", "()V"});

   126                 referenceMap.put(26, new String[]{"accept", "()Ljava/util/function/Consumer;"});

   127                 referenceMap.put(36, new String[]{"metafactory",

   128                         "(Ljava/lang/invoke/MethodHandles$Lookup;"

   129                         + "Ljava/lang/String;Ljava/lang/invoke/MethodType;"

   130                         + "Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;"

   131                         + "Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"});

   132                 referenceMap.put(37, new String[]{"toString", "()Ljava/lang/String;"});

   133                 referenceMap.put(49, new String[]{"myField", "I"});

   134             }

   135             @Override

   136             void testIndex(int cpi, Object reference) {

   137                 String[] natInfo = CP.getNameAndTypeRefInfoAt(cpi);

   138                 String msg = String.format("Method getNameAndTypeRefInfoAt"

   139                         + " works not as expected at CP entry #%d:"

   140                         + " returned value should not be null", cpi);

   141                 Asserts.assertNotNull(natInfo, msg);

   142                 String[] castedReference = (String[]) reference;

   143                 int natInfoLength = natInfo.length;

   144                 msg = String.format("Method getNameAndTypeRefInfoAt"

   145                         + " works not as expected at CP entry #%d:"

   146                         + " length of the returned string array is %d, but should be 2",

   147                         cpi, natInfoLength);

   148                 Asserts.assertEquals(natInfoLength, 2, msg);

   149                 String[] nameOrType = new String[]{"name", "type"};

   150                 for (int i = 0; i < 2; i++) {

   151                     String infoToVerify = natInfo[i];

   152                     String infoToRefer = castedReference[i];

   153                     msg = String.format("Method getNameAndTypeRefInfoAt"

   154                             + " works not as expected at CP entry #%d:"

   155                             + " got %s info %s, but should be %s",

   156                             cpi, nameOrType[i], infoToVerify, infoToRefer);

   157                     Asserts.assertEquals(infoToVerify, infoToRefer, msg);

   158                 }

   159             }

   160         };

   161 

   162         protected final Map<Integer, Object> referenceMap;

   163         TestCase() {

   164             this.referenceMap = new HashMap<>();

   165         }

   166         abstract void testIndex(int cpi, Object reference);

   167         public void test() {

   168             referenceMap.forEach(this::testIndex);

   169         }

   170     }

   171 }