1 /*

     2  * Copyright (c) 2015, 2016, 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.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

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

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

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

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

    15  * accompanied this code).

    16  *

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

    18  * 2 along with this work; if not, write to the Free Software Foundation,

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

    20  *

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

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

    23  * questions.

    24  */

    25 

    26 /* @test

    27  * @bug 8139885

    28  * @run testng/othervm -ea -esa test.java.lang.invoke.FindAccessTest

    29  */

    30 

    31 package test.java.lang.invoke;

    32 

    33 import java.lang.invoke.MethodHandle;

    34 import java.lang.invoke.MethodHandles;

    35 import java.lang.invoke.MethodHandles.Lookup;

    36 import java.lang.invoke.MethodType;

    37 

    38 import static org.testng.AssertJUnit.*;

    39 

    40 import org.testng.annotations.*;

    41 

    42 /**

    43  * Tests for Lookup.findClass/accessClass extensions added in JEP 274.

    44  */

    45 public class FindAccessTest {

    46 

    47     static final Lookup LOOKUP = MethodHandles.lookup();

    48 

    49     @Test

    50     public static void testFindSpecial() throws Throwable {

    51         FindSpecial.C c = new FindSpecial.C();

    52         assertEquals("I1.m", c.m());

    53         MethodType t = MethodType.methodType(String.class);

    54         MethodHandle ci1m = LOOKUP.findSpecial(FindSpecial.I1.class, "m", t, FindSpecial.C.class);

    55         assertEquals("I1.m", (String) ci1m.invoke(c));

    56     }

    57 

    58     @Test

    59     public static void testFindSpecialAbstract() throws Throwable {

    60         FindSpecial.C c = new FindSpecial.C();

    61         assertEquals("q", c.q());

    62         MethodType t = MethodType.methodType(String.class);

    63         boolean caught = false;

    64         try {

    65             MethodHandle ci3q = LOOKUP.findSpecial(FindSpecial.I3.class, "q", t, FindSpecial.C.class);

    66         } catch (Throwable thrown) {

    67             if (!(thrown instanceof IllegalAccessException) || !FindSpecial.ABSTRACT_ERROR.equals(thrown.getMessage())) {

    68                 throw new AssertionError(thrown.getMessage(), thrown);

    69             }

    70             caught = true;

    71         }

    72         assertTrue(caught);

    73     }

    74 

    75     @Test(expectedExceptions = {ClassNotFoundException.class})

    76     public static void testFindClassCNFE() throws ClassNotFoundException, IllegalAccessException {

    77         LOOKUP.findClass("does.not.Exist");

    78     }

    79 

    80     static class FindSpecial {

    81 

    82         interface I1 {

    83             default String m() {

    84                 return "I1.m";

    85             }

    86         }

    87 

    88         interface I2 {

    89             default String m() {

    90                 return "I2.m";

    91             }

    92         }

    93 

    94         interface I3 {

    95             String q();

    96         }

    97 

    98         static class C implements I1, I2, I3 {

    99             public String m() {

   100                 return I1.super.m();

   101             }

   102             public String q() {

   103                 return "q";

   104             }

   105         }

   106 

   107         static final String ABSTRACT_ERROR = "no such method: test.java.lang.invoke.FindAccessTest$FindSpecial$I3.q()String/invokeSpecial";

   108 

   109     }

   110 

   111 }