1 /*

     2  * Copyright (c) 2019, 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 8173975

    27  * @summary Lookup::in throws IAE if the target class is a primitive class or array class

    28  * @run testng/othervm LookupClassTest

    29  */

    30 

    31 import java.lang.invoke.MethodHandles;

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

    33 

    34 import org.testng.annotations.BeforeTest;

    35 import org.testng.annotations.Test;

    36 import static org.testng.Assert.*;

    37 

    38 public class LookupClassTest {

    39     private static final LookupClassTest[] ARRAY = new LookupClassTest[0];

    40     @BeforeTest

    41     public void test() {

    42         assertTrue(ARRAY.getClass().isArray());

    43         assertSamePackage(MethodHandles.lookup(), ARRAY.getClass());

    44         assertSamePackage(MethodHandles.publicLookup(), int.class);

    45     }

    46 

    47     private void assertSamePackage(Lookup lookup, Class<?> targetClass) {

    48         assertEquals(lookup.lookupClass().getPackageName(), targetClass.getPackageName());

    49     }

    50 

    51     @Test(expectedExceptions = IllegalArgumentException.class)

    52     public void arrayLookupClass() {

    53         Lookup lookup = MethodHandles.lookup();

    54         lookup.in(ARRAY.getClass());

    55     }

    56 

    57     @Test(expectedExceptions = IllegalArgumentException.class)

    58     public void primitiveLookupClass() {

    59         Lookup lookup = MethodHandles.publicLookup();

    60         lookup.in(int.class);

    61     }

    62 

    63     @Test(expectedExceptions = IllegalArgumentException.class)

    64     public void voidLookupClass() {

    65         Lookup lookup = MethodHandles.publicLookup();

    66         lookup.in(void.class);

    67     }

    68 }