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 /testlibrary /test/lib
32 * @compile myloaders/MyDiffClassLoader.java
33 * @compile p2/c2.java
34 * @compile p1/c1.java
35 * @build DiffCL_ExpUnqual
36 * @run main/othervm -Xbootclasspath/a:. DiffCL_ExpUnqual
37 */
38
39 import static jdk.test.lib.Asserts.*;
40
41 import java.lang.reflect.Layer;
42 import java.lang.module.Configuration;
43 import java.lang.module.ModuleDescriptor;
44 import java.lang.module.ModuleFinder;
45 import java.util.HashMap;
46 import java.util.Map;
47 import java.util.Set;
48 import myloaders.MyDiffClassLoader;
49
50 //
51 // ClassLoader1 --> defines m1 --> packages p1
52 // ClassLoader2 --> defines m2 --> packages p2
53 //
54 // m1 can read m2
55 // package p2 in m2 is exported to m1
56 //
57 // class p1.c1 defined in m1 tries to access p2.c2 defined in m2
58 // Access allowed since m1 can read m2 and package p2 is exported
59 // unqualifiedly.
60 //
61 public class DiffCL_ExpUnqual {
62
63 // Create a Layer over the boot layer.
64 // Define modules within this layer to test access between
65 // publically defined classes within packages of those modules.
66 public void createLayerOnBoot() throws Throwable {
67
68 // Define module: m1
69 // Can read: java.base, m2
70 // Packages: p1
71 // Packages exported: p1 is exported unqualifiedly
72 ModuleDescriptor descriptor_m1 =
73 new ModuleDescriptor.Builder("m1")
74 .requires("java.base")
75 .requires("m2")
76 .exports("p1")
77 .build();
78
79 // Define module: m2
80 // Can read: java.base
81 // Packages: p2
82 // Packages exported: package p2 is exported to m1
83 ModuleDescriptor descriptor_m2 =
84 new ModuleDescriptor.Builder("m2")
85 .requires("java.base")
86 .exports("p2")
87 .build();
88
89 // Set up a ModuleFinder containing all modules for this layer.
90 ModuleFinder finder = ModuleLibrary.of(descriptor_m1, descriptor_m2);
91
92 // Resolves "m1"
93 Configuration cf = Layer.boot()
94 .configuration()
95 .resolveRequires(finder, ModuleFinder.of(), Set.of("m1"));
96
97 // map each module to differing class loaders for this test
98 Map<String, ClassLoader> map = new HashMap<>();
99 map.put("m1", MyDiffClassLoader.loader1);
100 map.put("m2", MyDiffClassLoader.loader2);
101
102 // Create Layer that contains m1 & m2
103 Layer layer = Layer.boot().defineModules(cf, map::get);
104
105 assertTrue(layer.findLoader("m1") == MyDiffClassLoader.loader1);
106 assertTrue(layer.findLoader("m2") == MyDiffClassLoader.loader2);
107 assertTrue(layer.findLoader("java.base") == null);
108
109 // now use the same loader to load class p1.c1
110 Class p1_c1_class = MyDiffClassLoader.loader1.loadClass("p1.c1");
111 try {
112 p1_c1_class.newInstance();
113 } catch (IllegalAccessError e) {
114 throw new RuntimeException("Test Failed, an IAE should not be thrown since p2 is exported qualifiedly to m1");
115 }
116 }
117
118 public static void main(String args[]) throws Throwable {
119 DiffCL_ExpUnqual test = new DiffCL_ExpUnqual();
120 test.createLayerOnBoot();
121 }
122 }