1 /*
 2  * Copyright (c) 2021, 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.  Oracle designates this
 8  * particular file as subject to the "Classpath" exception as provided
 9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 
26 /*
27  * @test
28  * @bug 8265423
29  * @summary Experimental support for generating a single class file per primitive class
30  * @modules jdk.jdeps/com.sun.tools.classfile
31  * @run main UnifiedPrimitiveClassInnerClassesTest
32  */
33 
34 import com.sun.tools.classfile.*;
35 import com.sun.tools.classfile.ConstantPool.CONSTANT_Class_info;
36 
37 public class UnifiedPrimitiveClassInnerClassesTest {
38 
39     primitive class V<T> implements java.io.Serializable {}
40 
41     public static void main(String[] args) throws Exception {
42         ClassFile cls = ClassFile.read(UnifiedPrimitiveClassInnerClassesTest.class.getResourceAsStream("UnifiedPrimitiveClassInnerClassesTest.class"));
43 
44         if (cls == null) {
45             throw new AssertionError("Could not locate the class files");
46         }
47 
48         /* Check emission of inner class attribute */
49         InnerClasses_attribute inners = (InnerClasses_attribute) cls.attributes.get(Attribute.InnerClasses);
50         if (inners == null) {
51             throw new AssertionError("Missing inner class attribute");
52         }
53         boolean foundV = false, foundVref = false;
54         for (int i = 0; i < inners.number_of_classes; i++) {
55             String name = inners.classes[i].getInnerName(cls.constant_pool);
56             if (name.equals("V"))
57                 foundV = true;
58             else if (name.equals("V$ref"))
59                 foundVref = true;
60         }
61         if (!foundV || foundVref) {
62             throw new AssertionError("Incorrect inner class attribute");
63         }
64 
65         // Test signature attribute
66         cls = ClassFile.read(UnifiedPrimitiveClassInnerClassesTest.class.getResourceAsStream("UnifiedPrimitiveClassInnerClassesTest$V.class"));
67         Signature_attribute signature = (Signature_attribute)cls.attributes.get(Attribute.Signature);
68         String sign =  signature.getSignature(cls.constant_pool);
69         if (sign == null || !sign.equals("<T:Ljava/lang/Object;>Ljava/lang/Object;Ljava/io/Serializable;")) {
70             throw new RuntimeException("Wrong signature " + sign);
71         }
72     }
73 }