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
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24 */
25
26package jdk.nashorn.internal.runtime.test;
27
28import static org.testng.Assert.assertFalse;
29import static org.testng.Assert.assertTrue;
30
31import java.util.Map;
32import javax.script.Bindings;
33import jdk.nashorn.api.scripting.JSObject;
34import jdk.nashorn.api.scripting.ScriptObjectMirror;
35import jdk.nashorn.internal.objects.Global;
36import jdk.nashorn.internal.objects.NativeArray;
37import jdk.nashorn.internal.runtime.Context;
38import jdk.nashorn.internal.runtime.ErrorManager;
39import jdk.nashorn.internal.runtime.ScriptObject;
40import jdk.nashorn.internal.runtime.linker.Bootstrap;
41import jdk.nashorn.internal.runtime.options.Options;
42import org.testng.annotations.AfterClass;
43import org.testng.annotations.BeforeClass;
44import 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 */
56public 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}
128