DiffCL_ExpQualToM1.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
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
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24 */
25
26/*
27 * @test
28 * @summary class p1.c1 defined in m1 tries to access p2.c2 defined in m2.
29 *          Access allowed since m1 can read m2 and package p2 is exported to m1.
30 * @library /testlibrary /test/lib
31 * @compile myloaders/MyDiffClassLoader.java
32 * @compile p2/c2.java
33 * @compile p1/c1.java
34 * @build DiffCL_ExpQualToM1
35 * @run main/othervm -Xbootclasspath/a:. DiffCL_ExpQualToM1
36 */
37
38import static jdk.test.lib.Asserts.*;
39
40import java.lang.reflect.Layer;
41import java.lang.module.Configuration;
42import java.lang.module.ModuleDescriptor;
43import java.lang.module.ModuleFinder;
44import java.util.HashMap;
45import java.util.Map;
46import java.util.Set;
47import 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 to m1.
58//
59public class DiffCL_ExpQualToM1 {
60
61    // Create a Layer over the boot layer.
62    // Define modules within this layer to test access between
63    // publically defined classes within packages of those modules.
64    public void createLayerOnBoot() throws Throwable {
65
66        // Define module:     m1
67        // Can read:          java.base, m2
68        // Packages:          p1
69        // Packages exported: p1 is exported to unqualifiedly
70        ModuleDescriptor descriptor_m1 =
71                new ModuleDescriptor.Builder("m1")
72                        .requires("java.base")
73                        .requires("m2")
74                        .exports("p1")
75                        .build();
76
77        // Define module:     m2
78        // Can read:          java.base
79        // Packages:          p2
80        // Packages exported: package p2 is exported to m1
81        ModuleDescriptor descriptor_m2 =
82                new ModuleDescriptor.Builder("m2")
83                        .requires("java.base")
84                        .exports("p2", "m1")
85                        .build();
86
87        // Set up a ModuleFinder containing all modules for this layer.
88        ModuleFinder finder = ModuleLibrary.of(descriptor_m1, descriptor_m2);
89
90        // Resolves "m1"
91        Configuration cf = Layer.boot()
92                .configuration()
93                .resolveRequires(finder, ModuleFinder.empty(), Set.of("m1"));
94
95        // map each module to differing class loaders for this test
96        Map<String, ClassLoader> map = new HashMap<>();
97        map.put("m1", MyDiffClassLoader.loader1);
98        map.put("m2", MyDiffClassLoader.loader2);
99
100        // Create Layer that contains m1 & m2
101        Layer layer = Layer.boot().defineModules(cf, map::get);
102
103        assertTrue(layer.findLoader("m1") == MyDiffClassLoader.loader1);
104        assertTrue(layer.findLoader("m2") == MyDiffClassLoader.loader2);
105        assertTrue(layer.findLoader("java.base") == null);
106
107        // now use the same loader to load class p1.c1
108        Class p1_c1_class = MyDiffClassLoader.loader1.loadClass("p1.c1");
109        try {
110            p1_c1_class.newInstance();
111        } catch (IllegalAccessError e) {
112            throw new RuntimeException("Test Failed, an IAE should not be thrown since p2 is exported qualifiedly to m1");
113        }
114    }
115
116    public static void main(String args[]) throws Throwable {
117      DiffCL_ExpQualToM1 test = new DiffCL_ExpQualToM1();
118      test.createLayerOnBoot();
119    }
120}
121