ExpQualToM1.java revision 11833:1cbffa2beba6 
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
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24 */
25
26/*
27 * @test
28 * @summary Test that if module m1 can read module m2, AND package p2 in m2 is
29 *          exported qualifiedly to m1, 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/MySameClassLoader.java
33 * @compile p2/c2.java
34 * @compile p1/c1.java
35 * @run main/othervm -Xbootclasspath/a:. 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.MySameClassLoader;
48
49public class ExpQualToM1 {
50
51    // Create a Layer over the boot layer.
52    // Define modules within this layer to test access between
53    // publically defined classes within packages of those modules.
54    public void createLayerOnBoot() throws Throwable {
55
56        // Define module:     m1
57        // Can read:          java.base, m2
58        // Packages:          p1
59        // Packages exported: p1 is exported unqualifiedly
60        ModuleDescriptor descriptor_m1 =
61                new ModuleDescriptor.Builder("m1")
62                        .requires("java.base")
63                        .requires("m2")
64                        .exports("p1")
65                        .build();
66
67        // Define module:     m2
68        // Can read:          java.base
69        // Packages:          p2
70        // Packages exported: p2 is exported qualifiedly to m1
71        ModuleDescriptor descriptor_m2 =
72                new ModuleDescriptor.Builder("m2")
73                        .requires("java.base")
74                        .exports("p2", "m1")
75                        .build();
76
77        // Set up a ModuleFinder containing all modules for this layer.
78        ModuleFinder finder = ModuleLibrary.of(descriptor_m1, descriptor_m2);
79
80        // Resolves "m1"
81        Configuration cf = Layer.boot()
82                .configuration()
83                .resolveRequires(finder, ModuleFinder.of(), Set.of("m1"));
84
85        // map each module to the same class loader for this test
86        Map<String, ClassLoader> map = new HashMap<>();
87        map.put("m1", MySameClassLoader.loader1);
88        map.put("m2", MySameClassLoader.loader1);
89
90        // Create Layer that contains m1 & m2
91        Layer layer = Layer.boot().defineModules(cf, map::get);
92
93        assertTrue(layer.findLoader("m1") == MySameClassLoader.loader1);
94        assertTrue(layer.findLoader("m2") == MySameClassLoader.loader1);
95
96        // now use the same loader to load class p1.c1
97        Class p1_c1_class = MySameClassLoader.loader1.loadClass("p1.c1");
98        try {
99            p1_c1_class.newInstance();
100        } catch (IllegalAccessError e) {
101            throw new RuntimeException("Test Failed, an IAE should not be thrown since p2 is exported qualifiedly to m1");
102        }
103    }
104
105    public static void main(String args[]) throws Throwable {
106      ExpQualToM1 test = new ExpQualToM1();
107      test.createLayerOnBoot();
108    }
109
110}
111