UmodDiffCL_ExpQualOther.java revision 10420:c558850fac57 
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
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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
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24 */
25
26/*
27 * @test
28 * @summary class p1.c1 defined in an unnamed module tries to access p2.c2 defined in m2.
29 *          Access is denied, since an unnamed module can read all modules but p2 in module
30 *          m2 is exported specifically to module m1, not to all modules.
31 * @library /testlibrary /test/lib
32 * @compile myloaders/MyDiffClassLoader.java
33 * @compile p2/c2.java
34 * @compile p1/c1.java
35 * @build UmodDiffCL_ExpQualOther
36 * @run main/othervm -Xbootclasspath/a:. UmodDiffCL_ExpQualOther
37 */
38
39import static jdk.test.lib.Asserts.*;
40
41import java.lang.reflect.Layer;
42import java.lang.module.Configuration;
43import java.lang.module.ModuleDescriptor;
44import java.lang.module.ModuleFinder;
45import java.util.HashMap;
46import java.util.Map;
47import java.util.Set;
48import myloaders.MyDiffClassLoader;
49
50//
51// ClassLoader1 --> defines m1 --> no packages
52// ClassLoader2 --> defines m2 --> packages p2
53//
54// m1 can read m2
55// package p2 in m2 is not exported
56//
57// class p1.c1 defined in an unnamed module tries to access p2.c2 defined in m2
58// Access denied, an unnamed module can read all modules but p2 in module
59//             m2 is exported specifically to module m1 not to all modules.
60//
61public class UmodDiffCL_ExpQualOther {
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
70        // Packages:          none
71        // Packages exported: none
72        ModuleDescriptor descriptor_m1 =
73                new ModuleDescriptor.Builder("m1")
74                        .requires("java.base")
75                        .requires("m2")
76                        .build();
77
78        // Define module:     m2
79        // Can read:          java.base
80        // Packages:          p2
81        // Packages exported: none
82        ModuleDescriptor descriptor_m2 =
83                new ModuleDescriptor.Builder("m2")
84                        .requires("java.base")
85                        .exports("p2", "m1")
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.empty(), 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        // NOTE: module m1 does not define a package named p1.
110        //       p1 will be loaded in an unnamed module.
111        Class p1_c1_class = MyDiffClassLoader.loader1.loadClass("p1.c1");
112        try {
113            p1_c1_class.newInstance();
114            throw new RuntimeException("Failed to get IAE (p2 in m2 is exported to m1, not unqualifiedly");
115        } catch (IllegalAccessError e) {
116            System.out.println(e.getMessage());
117            if (!e.getMessage().contains("does not export")) {
118                throw new RuntimeException("Wrong message: " + e.getMessage());
119            }
120        }
121    }
122
123    public static void main(String args[]) throws Throwable {
124      UmodDiffCL_ExpQualOther test = new UmodDiffCL_ExpQualOther();
125      test.createLayerOnBoot();
126    }
127}
128