1 /*
 2  * Copyright (c) 2025, 2026, 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 import jdk.incubator.code.Op;
25 import jdk.incubator.code.Reflect;
26 import jdk.incubator.code.dialect.core.CoreOp;
27 import org.junit.jupiter.api.Assertions;
28 import org.junit.jupiter.api.Test;
29 
30 import java.lang.reflect.Method;
31 import java.util.List;
32 import java.util.Optional;
33 import java.util.stream.IntStream;
34 
35 /*
36  * @test
37  * @modules jdk.incubator.code
38  * @run junit TestOpOfMethod
39  */
40 public class TestOpOfMethod {
41 
42     @Reflect
43     static void f() {
44     }
45     @Reflect
46     static void g() {
47     }
48 
49     @Test
50     public void testInstancesReflectSameMethodHaveSameModel() throws NoSuchMethodException {
51         Method f = this.getClass().getDeclaredMethod("f");
52         Method f2 = this.getClass().getDeclaredMethod("f");
53         CoreOp.FuncOp fm = Op.ofMethod(f).orElseThrow();
54         CoreOp.FuncOp fm2 = Op.ofMethod(f2).orElseThrow();
55         Assertions.assertSame(fm, fm2);
56     }
57 
58     @Test
59     public void testInstancesReflectDiffMethodsHaveDiffModels() throws NoSuchMethodException {
60         Method f = this.getClass().getDeclaredMethod("f");
61         CoreOp.FuncOp fm = Op.ofMethod(f).orElseThrow();
62 
63         Method g = this.getClass().getDeclaredMethod("g");
64         CoreOp.FuncOp gm = Op.ofMethod(g).orElseThrow();
65 
66         Assertions.assertNotSame(gm, fm);
67     }
68 
69     @Test
70     public void testOpOfMethodIsThreadSafe() throws NoSuchMethodException {
71         Method f = this.getClass().getDeclaredMethod("f");
72         List<Optional<CoreOp.FuncOp>> fops = IntStream.range(1, 3).parallel().mapToObj(_ -> Op.ofMethod(f)).toList();
73         Assertions.assertSame(fops.getFirst(), fops.getLast());
74     }
75 }