1 /*
 2  * Copyright (c) 2020, 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  * @requires ((os.arch == "amd64" | os.arch == "x86_64") & sun.arch.data.model == "64") | os.arch == "aarch64"
27  * @modules jdk.incubator.foreign/jdk.internal.foreign
28  * @run testng/othervm --enable-native-access=ALL-UNNAMED TestSymbolLookup
29  */
30 
31 import jdk.incubator.foreign.MemoryAddress;
32 import jdk.incubator.foreign.SymbolLookup;
33 import jdk.incubator.foreign.MemorySegment;
34 import jdk.incubator.foreign.ResourceScope;
35 import jdk.incubator.foreign.ValueLayout;
36 import org.testng.annotations.Test;
37 
38 import static jdk.incubator.foreign.ValueLayout.JAVA_BYTE;
39 import static org.testng.Assert.*;
40 
41 // FYI this test is run on 64-bit platforms only for now,
42 // since the windows 32-bit linker fails and there
43 // is some fallback behaviour to use the 64-bit linker,
44 // where cygwin gets in the way and we accidentally pick up its
45 // link.exe
46 public class TestSymbolLookup {
47     static {
48         System.loadLibrary("LookupTest");
49     }
50 
51     static final SymbolLookup LOOKUP = SymbolLookup.loaderLookup();
52 
53     @Test
54     public void testSimpleLookup() {
55         assertFalse(LOOKUP.lookup("f").isEmpty());
56     }
57 
58     @Test
59     public void testInvalidSymbolLookup() {
60         assertTrue(LOOKUP.lookup("nonExistent").isEmpty());
61     }
62 
63     @Test
64     public void testVariableSymbolLookup() {
65         MemorySegment segment = MemorySegment.ofAddressNative(LOOKUP.lookup("c").get().address(), ValueLayout.JAVA_INT.byteSize(), ResourceScope.globalScope());
66         assertEquals(segment.get(JAVA_BYTE, 0), 42);
67     }
68 }