1 /*
 2  * Copyright (c) 2024, 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  * @summary Smoke test for captured values in local classes.
27  * @modules jdk.incubator.code
28  * @run testng TestLocalCapture
29  */
30 
31 import jdk.incubator.code.Op;
32 import org.testng.annotations.*;
33 
34 import java.lang.invoke.MethodHandles;
35 import java.lang.reflect.Method;
36 import jdk.incubator.code.interpreter.Interpreter;
37 import jdk.incubator.code.op.CoreOp.FuncOp;
38 import jdk.incubator.code.CodeReflection;
39 import java.util.stream.IntStream;
40 
41 import static org.testng.Assert.*;
42 
43 public class TestLocalCapture {
44 
45     int x = 13;
46     final int CONST = 1;
47 
48     @CodeReflection
49     public int sum(int y, int z) {
50         final int localConst = 2;
51         class Foo {
52             int sum(int z) { return localConst + x + y + z + CONST; };
53         }
54         return new Foo().sum(z);
55     }
56 
57     @Test(dataProvider = "ints")
58     public void testLocalCapture(int y) throws ReflectiveOperationException {
59         Method sum = TestLocalCapture.class.getDeclaredMethod("sum", int.class, int.class);
60         FuncOp model = Op.ofMethod(sum).get();
61         int found = (int)Interpreter.invoke(MethodHandles.lookup(), model, this, y, 17);
62         int expected = sum(y, 17);
63         assertEquals(found, expected);
64     }
65 
66     @DataProvider(name = "ints")
67     public Object[][] ints() {
68         return IntStream.range(0, 50)
69                 .mapToObj(i -> new Object[] { i })
70                 .toArray(Object[][]::new);
71     }
72 }