1 /*
   2  * Copyright (c) 2015, 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
  23  * questions.
  24  */
  25 
  26 package jdk.nashorn.internal.runtime.test;
  27 
  28 import static org.testng.Assert.assertFalse;
  29 import static org.testng.Assert.assertTrue;
  30 
  31 import java.util.Map;
  32 import javax.script.Bindings;
  33 import jdk.nashorn.api.scripting.JSObject;
  34 import jdk.nashorn.api.scripting.ScriptObjectMirror;
  35 import jdk.nashorn.internal.objects.Global;
  36 import jdk.nashorn.internal.objects.NativeArray;
  37 import jdk.nashorn.internal.runtime.Context;
  38 import jdk.nashorn.internal.runtime.ErrorManager;
  39 import jdk.nashorn.internal.runtime.ScriptObject;
  40 import jdk.nashorn.internal.runtime.linker.Bootstrap;
  41 import jdk.nashorn.internal.runtime.options.Options;
  42 import org.testng.annotations.AfterClass;
  43 import org.testng.annotations.BeforeClass;
  44 import org.testng.annotations.Test;
  45 
  46 /**
  47  * @test
  48  * @bug 8078414
  49  * @summary Test that arbitrary classes can't be converted to mirror's superclasses/interfaces.
  50  * @modules jdk.scripting.nashorn/jdk.nashorn.internal.runtime
  51  * @modules jdk.scripting.nashorn/jdk.nashorn.internal.runtime.linker
  52  * @modules jdk.scripting.nashorn/jdk.nashorn.internal.runtime.options
  53  * @modules jdk.scripting.nashorn/jdk.nashorn.internal.objects
  54  * @run testng jdk.nashorn.internal.runtime.test.JDK_8078414_Test
  55  */
  56 public class JDK_8078414_Test {
  57     private static Context cx;
  58     private static Global oldGlobal;
  59 
  60     @BeforeClass
  61     public static void beforeClass() {
  62         // We must have a Context for the DynamicLinker that Bootstrap.getLinkerServices() will use
  63         oldGlobal = Context.getGlobal();
  64         cx = new Context(new Options(""), new ErrorManager(), null);
  65         Context.setGlobal(cx.createGlobal());
  66     }
  67 
  68     @AfterClass
  69     public static void afterClass() {
  70         Context.setGlobal(oldGlobal);
  71         oldGlobal = null;
  72         cx = null;
  73     }
  74 
  75     @Test
  76     public void testCanNotConvertArbitraryClassToMirror() {
  77         assertCanNotConvert(Double.class, Map.class);
  78         assertCanNotConvert(Double.class, Bindings.class);
  79         assertCanNotConvert(Double.class, JSObject.class);
  80         assertCanNotConvert(Double.class, ScriptObjectMirror.class);
  81     }
  82 
  83     @Test
  84     public void testCanConvertObjectToMirror() {
  85         assertCanConvertToMirror(Object.class);
  86     }
  87 
  88     @Test
  89     public void testCanConvertScriptObjectToMirror() {
  90         assertCanConvertToMirror(ScriptObject.class);
  91     }
  92 
  93     @Test
  94     public void testCanConvertScriptObjectSubclassToMirror() {
  95         assertCanConvertToMirror(NativeArray.class);
  96     }
  97 
  98     @Test
  99     public void testCanConvertArbitraryInterfaceToMirror() {
 100         // We allow arbitrary interface classes, depending on what implements them, to end up being
 101         // convertible to ScriptObjectMirror, as an implementation can theoretically pass an
 102         // "instanceof ScriptObject" guard.
 103         assertCanConvertToMirror(TestInterface.class);
 104     }
 105 
 106     public static interface TestInterface {
 107     }
 108 
 109     private static boolean canConvert(final Class<?> from, final Class<?> to) {
 110         return Bootstrap.getLinkerServices().canConvert(from, to);
 111     }
 112 
 113     private static void assertCanConvert(final Class<?> from, final Class<?> to) {
 114         assertTrue(canConvert(from, to));
 115     }
 116 
 117     private static void assertCanNotConvert(final Class<?> from, final Class<?> to) {
 118         assertFalse(canConvert(from, to));
 119     }
 120 
 121     private static void assertCanConvertToMirror(final Class<?> from) {
 122         assertCanConvert(from, Map.class);
 123         assertCanConvert(from, Bindings.class);
 124         assertCanConvert(from, JSObject.class);
 125         assertCanConvert(from, ScriptObjectMirror.class);
 126     }
 127 }