1/*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 * This code is free software; you can redistribute it and/or modify it
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7 * published by the Free Software Foundation.  Oracle designates this
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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).
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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24 */
25
26/* @test
27 * @bug 8139885
28 * @run testng/othervm -ea -esa test.java.lang.invoke.FindAccessTest
29 */
30
31package test.java.lang.invoke;
32
33import java.lang.invoke.MethodHandle;
34import java.lang.invoke.MethodHandles;
35import java.lang.invoke.MethodHandles.Lookup;
36import java.lang.invoke.MethodType;
37
38import static org.testng.AssertJUnit.*;
39
40import org.testng.annotations.*;
41
42/**
43 * Tests for Lookup.findClass/accessClass extensions added in JEP 274.
44 */
45public class FindAccessTest {
46
47    static final Lookup LOOKUP = MethodHandles.lookup();
48
49    @Test
50    public static void testFindSpecial() throws Throwable {
51        FindSpecial.C c = new FindSpecial.C();
52        assertEquals("I1.m", c.m());
53        MethodType t = MethodType.methodType(String.class);
54        MethodHandle ci1m = LOOKUP.findSpecial(FindSpecial.I1.class, "m", t, FindSpecial.C.class);
55        assertEquals("I1.m", (String) ci1m.invoke(c));
56    }
57
58    @Test
59    public static void testFindSpecialAbstract() throws Throwable {
60        FindSpecial.C c = new FindSpecial.C();
61        assertEquals("q", c.q());
62        MethodType t = MethodType.methodType(String.class);
63        boolean caught = false;
64        try {
65            MethodHandle ci3q = LOOKUP.findSpecial(FindSpecial.I3.class, "q", t, FindSpecial.C.class);
66        } catch (Throwable thrown) {
67            if (!(thrown instanceof IllegalAccessException) || !FindSpecial.ABSTRACT_ERROR.equals(thrown.getMessage())) {
68                throw new AssertionError(thrown.getMessage(), thrown);
69            }
70            caught = true;
71        }
72        assertTrue(caught);
73    }
74
75    @Test(expectedExceptions = {ClassNotFoundException.class})
76    public static void testFindClassCNFE() throws ClassNotFoundException, IllegalAccessException {
77        LOOKUP.findClass("does.not.Exist");
78    }
79
80    static class FindSpecial {
81
82        interface I1 {
83            default String m() {
84                return "I1.m";
85            }
86        }
87
88        interface I2 {
89            default String m() {
90                return "I2.m";
91            }
92        }
93
94        interface I3 {
95            String q();
96        }
97
98        static class C implements I1, I2, I3 {
99            public String m() {
100                return I1.super.m();
101            }
102            public String q() {
103                return "q";
104            }
105        }
106
107        static final String ABSTRACT_ERROR = "no such method: test.java.lang.invoke.FindAccessTest$FindSpecial$I3.q()String/invokeSpecial";
108
109    }
110
111}
112