ExpQualOther.java revision 12290:8953c0318163 
1/*
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14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
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25
26/*
27 * @test
28 * @summary Test that if module m1 can read module m2, but package p2 in m2
29 *          is exported specifically to module m3, then class p1.c1 in m1 can not
30 *          access p2.c2 in m2.
31 * @modules java.base/jdk.internal.misc
32 * @library /test/lib
33 * @compile myloaders/MySameClassLoader.java
34 * @compile p2/c2.java
35 * @compile p1/c1.java
36 * @run main/othervm -Xbootclasspath/a:. 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.MySameClassLoader;
49
50//
51// ClassLoader1 --> defines m1 --> packages p1
52//                  defines m2 --> packages p2
53//                  defines m3 --> packages p3
54//
55// m1 can read m2
56// package p2 in m2 is exported to m3
57//
58// class p1.c1 defined in m1 tries to access p2.c2 defined in m2
59// Access denied since although m1 can read m2, p2 is exported only to m3.
60//
61public class 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, m2, m3
70        // Packages:          p1
71        // Packages exported: p1 is exported unqualifiedly
72        ModuleDescriptor descriptor_m1 =
73                ModuleDescriptor.module("m1")
74                        .requires("java.base")
75                        .requires("m2")
76                        .requires("m3")
77                        .exports("p1")
78                        .build();
79
80        // Define module:     m2
81        // Can read:          java.base
82        // Packages:          p2
83        // Packages exported: p2 is exported to m3
84        ModuleDescriptor descriptor_m2 =
85                ModuleDescriptor.module("m2")
86                        .requires("java.base")
87                        .exports("p2", Set.of("m3"))
88                        .build();
89
90        // Define module:     m3
91        // Can read:          java.base, m2
92        // Packages:          p3
93        // Packages exported: none
94        ModuleDescriptor descriptor_m3 =
95                ModuleDescriptor.module("m3")
96                        .requires("java.base")
97                        .requires("m2")
98                        .contains("p3")
99                        .build();
100
101        // Set up a ModuleFinder containing all modules for this layer.
102        ModuleFinder finder = ModuleLibrary.of(descriptor_m1, descriptor_m2, descriptor_m3);
103
104        // Resolves "m1"
105        Configuration cf = Layer.boot()
106                .configuration()
107                .resolveRequires(finder, ModuleFinder.of(), Set.of("m1"));
108
109        // map each module to differing class loaders for this test
110        Map<String, ClassLoader> map = new HashMap<>();
111        map.put("m1", MySameClassLoader.loader1);
112        map.put("m2", MySameClassLoader.loader1);
113        map.put("m3", MySameClassLoader.loader1);
114
115        // Create Layer that contains m1 & m2
116        Layer layer = Layer.boot().defineModules(cf, map::get);
117
118        assertTrue(layer.findLoader("m1") == MySameClassLoader.loader1);
119        assertTrue(layer.findLoader("m2") == MySameClassLoader.loader1);
120        assertTrue(layer.findLoader("m3") == MySameClassLoader.loader1);
121        assertTrue(layer.findLoader("java.base") == null);
122
123        // now use the same loader to load class p1.c1
124        Class p1_c1_class = MySameClassLoader.loader1.loadClass("p1.c1");
125        try {
126            p1_c1_class.newInstance();
127            throw new RuntimeException("Failed to get IAE (p2 in m2 is exported to m3 not to m1)");
128        } catch (IllegalAccessError e) {
129            System.out.println(e.getMessage());
130            if (!e.getMessage().contains("does not export")) {
131                throw new RuntimeException("Wrong message: " + e.getMessage());
132            }
133        }
134    }
135
136    public static void main(String args[]) throws Throwable {
137      ExpQualOther test = new ExpQualOther();
138      test.createLayerOnBoot();
139    }
140}
141