1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
/*
* Copyright (c) 2015, 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.
*/
/* @test
* @bug 8139885
* @run testng/othervm -ea -esa test.java.lang.invoke.FindAccessTest
*/
package test.java.lang.invoke;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodHandles.Lookup;
import java.lang.invoke.MethodType;
import static org.testng.AssertJUnit.*;
import org.testng.annotations.*;
/**
* Tests for Lookup.findClass/accessClass extensions added in JEP 274.
*/
public class FindAccessTest {
static final Lookup LOOKUP = MethodHandles.lookup();
@Test
public static void testFindSpecial() throws Throwable {
FindSpecial.C c = new FindSpecial.C();
assertEquals("I1.m", c.m());
MethodType t = MethodType.methodType(String.class);
MethodHandle ci1m = LOOKUP.findSpecial(FindSpecial.I1.class, "m", t, FindSpecial.C.class);
assertEquals("I1.m", (String) ci1m.invoke(c));
}
@Test
public static void testFindSpecialAbstract() throws Throwable {
FindSpecial.C c = new FindSpecial.C();
assertEquals("q", c.q());
MethodType t = MethodType.methodType(String.class);
boolean caught = false;
try {
MethodHandle ci3q = LOOKUP.findSpecial(FindSpecial.I3.class, "q", t, FindSpecial.C.class);
} catch (Throwable thrown) {
if (!(thrown instanceof IllegalAccessException) || !FindSpecial.ABSTRACT_ERROR.equals(thrown.getMessage())) {
throw new AssertionError(thrown.getMessage(), thrown);
}
caught = true;
}
assertTrue(caught);
}
@Test(expectedExceptions = {ClassNotFoundException.class})
public static void testFindClassCNFE() throws ClassNotFoundException, IllegalAccessException {
LOOKUP.findClass("does.not.Exist");
}
static class FindSpecial {
interface I1 {
default String m() {
return "I1.m";
}
}
interface I2 {
default String m() {
return "I2.m";
}
}
interface I3 {
String q();
}
static class C implements I1, I2, I3 {
public String m() {
return I1.super.m();
}
public String q() {
return "q";
}
}
static final String ABSTRACT_ERROR = "no such method: test.java.lang.invoke.FindAccessTest$FindSpecial$I3.q()String/invokeSpecial";
}
}
|
