1 /*
2 * Copyright (c) 2016, 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 * @summary Test that if module m1 can read module m2, and package p2 in m2 is
29 * exported unqualifiedly, then class p1.c1 in m1 can read p2.c2 in m2.
30 * @modules java.base/jdk.internal.misc
31 * @library /test/lib
32 * @compile myloaders/MyDiffClassLoader.java
33 * @compile p2/c2.java
34 * @compile p1/c1.java
35 * @run main/othervm -Xbootclasspath/a:. DiffCL_ExpUnqual
36 */
37
38 import static jdk.test.lib.Asserts.*;
39
40 import java.lang.reflect.Layer;
41 import java.lang.module.Configuration;
42 import java.lang.module.ModuleDescriptor;
43 import java.lang.module.ModuleFinder;
44 import java.util.HashMap;
45 import java.util.Map;
46 import java.util.Set;
47 import myloaders.MyDiffClassLoader;
48
49 //
50 // ClassLoader1 --> defines m1 --> packages p1
51 // ClassLoader2 --> defines m2 --> packages p2
52 //
53 // m1 can read m2
54 // package p2 in m2 is exported to m1
55 //
56 // class p1.c1 defined in m1 tries to access p2.c2 defined in m2
57 // Access allowed since m1 can read m2 and package p2 is exported
58 // unqualifiedly.
59 //
60 public class DiffCL_ExpUnqual {
61
62 // Create a Layer over the boot layer.
63 // Define modules within this layer to test access between
64 // publically defined classes within packages of those modules.
65 public void createLayerOnBoot() throws Throwable {
66
67 // Define module: m1
68 // Can read: java.base, m2
69 // Packages: p1
70 // Packages exported: p1 is exported unqualifiedly
71 ModuleDescriptor descriptor_m1 =
72 new ModuleDescriptor.Builder("m1")
73 .requires("java.base")
74 .requires("m2")
75 .exports("p1")
76 .build();
77
78 // Define module: m2
79 // Can read: java.base
80 // Packages: p2
81 // Packages exported: package p2 is exported to m1
82 ModuleDescriptor descriptor_m2 =
83 new ModuleDescriptor.Builder("m2")
84 .requires("java.base")
85 .exports("p2")
86 .build();
87
88 // Set up a ModuleFinder containing all modules for this layer.
89 ModuleFinder finder = ModuleLibrary.of(descriptor_m1, descriptor_m2);
90
91 // Resolves "m1"
92 Configuration cf = Layer.boot()
93 .configuration()
94 .resolveRequires(finder, ModuleFinder.of(), Set.of("m1"));
95
96 // map each module to differing class loaders for this test
97 Map<String, ClassLoader> map = new HashMap<>();
98 map.put("m1", MyDiffClassLoader.loader1);
99 map.put("m2", MyDiffClassLoader.loader2);
100
101 // Create Layer that contains m1 & m2
102 Layer layer = Layer.boot().defineModules(cf, map::get);
103
104 assertTrue(layer.findLoader("m1") == MyDiffClassLoader.loader1);
105 assertTrue(layer.findLoader("m2") == MyDiffClassLoader.loader2);
106 assertTrue(layer.findLoader("java.base") == null);
107
108 // now use the same loader to load class p1.c1
109 Class p1_c1_class = MyDiffClassLoader.loader1.loadClass("p1.c1");
110 try {
111 p1_c1_class.newInstance();
112 } catch (IllegalAccessError e) {
113 throw new RuntimeException("Test Failed, an IAE should not be thrown since p2 is exported qualifiedly to m1");
114 }
115 }
116
117 public static void main(String args[]) throws Throwable {
118 DiffCL_ExpUnqual test = new DiffCL_ExpUnqual();
119 test.createLayerOnBoot();
120 }
121 }