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  * @run testng TestOptions
27  */
28 
29 import org.testng.Assert;
30 import org.testng.annotations.Test;
31 
32 import java.lang.reflect.Method;
33 import java.lang.reflect.code.op.CoreOp;
34 import java.lang.reflect.code.writer.OpWriter;
35 import java.lang.runtime.CodeReflection;
36 import java.util.Optional;
37 import java.util.stream.Stream;
38 
39 public class TestOptions {
40 
41     @CodeReflection
42     static int f(int n) {
43         return n;
44     }
45 
46     @Test
47     public void testDropWriteVoid() {
48         CoreOp.FuncOp f = getFuncOp("f");
49 
50         Assert.assertFalse(OpWriter.toText(f).contains("void"));
51         Assert.assertFalse(OpWriter.toText(f, OpWriter.VoidOpResultOption.DROP_VOID).contains("void"));
52         Assert.assertTrue(OpWriter.toText(f, OpWriter.VoidOpResultOption.WRITE_VOID).contains("void"));
53     }
54 
55     @Test
56     public void testDropWriteDescendants() {
57         CoreOp.FuncOp f = getFuncOp("f");
58 
59         Assert.assertTrue(OpWriter.toText(f).lines().count() > 1);
60         Assert.assertTrue(OpWriter.toText(f, OpWriter.OpDescendantsOption.WRITE_DESCENDANTS).lines().count() > 1);
61         Assert.assertTrue(OpWriter.toText(f, OpWriter.OpDescendantsOption.DROP_DESCENDANTS).lines().count() == 1);
62     }
63 
64 
65     static CoreOp.FuncOp getFuncOp(String name) {
66         Optional<Method> om = Stream.of(TestOptions.class.getDeclaredMethods())
67                 .filter(m -> m.getName().equals(name))
68                 .findFirst();
69 
70         Method m = om.get();
71         return m.getCodeModel().get();
72     }
73 }