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/sun.reflect

    29  * @library /lib/testlibrary

    30  * @compile ConstantPoolTestDummy.jasm

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

    32  */

    33 

    34 package sun.reflect.constantPool;

    35 

    36 import java.util.HashMap;

    37 import java.util.Map;

    38 import jdk.internal.misc.SharedSecrets;

    39 import jdk.testlibrary.Asserts;

    40 import sun.reflect.ConstantPool;

    41 

    42 public class ConstantPoolTest {

    43 

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

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

    46             .getConstantPool(TEST_CLASS);

    47 

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

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

    50             testCase.test();

    51         }

    52     }

    53 

    54     public static enum TestCase {

    55         GET_TAG_AT {

    56             {

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    71             }

    72             @Override

    73             void testIndex(int cpi, Object reference) {

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

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

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

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

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

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

    80             }

    81         },

    82         GET_CLASS_REF_INDEX_AT {

    83             {

    84                 referenceMap.put(1, 3);

    85                 referenceMap.put(16, 17);

    86                 referenceMap.put(32, 35);

    87                 referenceMap.put(34, 3);

    88                 referenceMap.put(48, 2);

    89             }

    90             @Override

    91             void testIndex(int cpi, Object reference) {

    92                 int indexToVerify = CP.getClassRefIndexAt(cpi);

    93                 int indexToRefer = (int) reference;

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

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

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

    97                         cpi, indexToVerify, indexToRefer);

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

    99             }

   100         },

   101         GET_NAME_AND_TYPE_REF_INDEX_AT {

   102             {

   103                 referenceMap.put(1, 10);

   104                 referenceMap.put(16, 18);

   105                 referenceMap.put(25, 26);

   106                 referenceMap.put(32, 36);

   107                 referenceMap.put(34, 37);

   108                 referenceMap.put(48, 49);

   109             }

   110             @Override

   111             void testIndex(int cpi, Object reference) {

   112                 int indexToRefer = (int) reference;

   113                 int indexToVerify = CP.getNameAndTypeRefIndexAt(cpi);

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

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

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

   117                         cpi, indexToVerify, indexToRefer);

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

   119             }

   120         },

   121         GET_NAME_AND_TYPE_REF_INFO_AT {

   122             {

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

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

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

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

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

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

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

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

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

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

   133             }

   134             @Override

   135             void testIndex(int cpi, Object reference) {

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

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

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

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

   140                 Asserts.assertNotNull(natInfo, msg);

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

   142                 int natInfoLength = natInfo.length;

   143                 msg = String.format("Method getNameAndTypeRefInfoAt"

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

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

   146                         cpi, natInfoLength);

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

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

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

   150                     String infoToVerify = natInfo[i];

   151                     String infoToRefer = castedReference[i];

   152                     msg = String.format("Method getNameAndTypeRefInfoAt"

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

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

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

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

   157                 }

   158             }

   159         };

   160 

   161         protected final Map<Integer, Object> referenceMap;

   162         TestCase() {

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

   164         }

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

   166         public void test() {

   167             referenceMap.forEach(this::testIndex);

   168         }

   169     }

   170 }