hotspot/test/runtime/modules/ModuleStress/ModuleSameCLMain.java
changeset 39616 f82b1f888578
child 42307 cefc81dc1d52
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/runtime/modules/ModuleStress/ModuleSameCLMain.java	Tue Jun 28 10:11:01 2016 -0400
@@ -0,0 +1,109 @@
+/*
+ * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import static jdk.test.lib.Asserts.*;
+
+import java.lang.reflect.Layer;
+import java.lang.module.Configuration;
+import java.lang.module.ModuleDescriptor;
+import java.lang.module.ModuleFinder;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+
+//
+// ClassLoader1 --> defines m1 --> packages p1
+// ClassLoader1 --> defines m2 --> packages p2
+//
+// m1 can read m2
+// package p2 in m2 is exported to m1
+//
+// class p1.c1 defined in m1 tries to access p2.c2 defined in m2
+// Access allowed since m1 can read m2 and package p2 is exported to m1.
+//
+public class ModuleSameCLMain {
+
+    // Create a Layer over the boot layer.
+    // Define modules within this layer to test access between
+    // publically defined classes within packages of those modules.
+    public void createLayerOnBoot() throws Throwable {
+
+        // Define module:     m1
+        // Can read:          java.base, m2
+        // Packages:          p1
+        // Packages exported: p1 is exported to unqualifiedly
+        ModuleDescriptor descriptor_m1 =
+                new ModuleDescriptor.Builder("m1")
+                        .requires("java.base")
+                        .requires("m2")
+                        .exports("p1")
+                        .build();
+
+        // Define module:     m2
+        // Can read:          java.base
+        // Packages:          p2
+        // Packages exported: package p2 is exported to m1
+        ModuleDescriptor descriptor_m2 =
+                new ModuleDescriptor.Builder("m2")
+                        .requires("java.base")
+                        .exports("p2", "m1")
+                        .build();
+
+        // Set up a ModuleFinder containing all modules for this layer.
+        ModuleFinder finder = ModuleLibrary.of(descriptor_m1, descriptor_m2);
+
+        // Resolves "m1"
+        Configuration cf = Layer.boot()
+                .configuration()
+                .resolveRequires(finder, ModuleFinder.of(), Set.of("m1"));
+
+        // map each module to the same class loader for this test
+        Map<String, ClassLoader> map = new HashMap<>();
+        Loader1 cl1 = new Loader1();
+        map.put("m1", cl1);
+        map.put("m2", cl1);
+
+        // Create Layer that contains m1 & m2
+        Layer layer = Layer.boot().defineModules(cf, map::get);
+        assertTrue(layer.findLoader("m1") == cl1);
+        assertTrue(layer.findLoader("m2") == cl1);
+        assertTrue(layer.findLoader("java.base") == null);
+
+        // now use the same loader to load class p1.c1
+        Class p1_c1_class = cl1.loadClass("p1.c1");
+        try {
+            p1_c1_class.newInstance();
+        } catch (IllegalAccessError e) {
+            throw new RuntimeException("Test Failed, an IAE should not be thrown since p2 is exported qualifiedly to m1");
+        }
+    }
+
+    public static void main(String args[]) throws Throwable {
+      ModuleSameCLMain test = new ModuleSameCLMain();
+      test.createLayerOnBoot();
+    }
+
+    static class Loader1 extends ClassLoader { }
+}