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
|
/*
* Copyright (c) 2021, 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.
*
* 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 8259922
* @run testng/othervm MethodHandlesCollectArgsTest
*/
import org.testng.annotations.Test;
import org.testng.annotations.DataProvider;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import static java.lang.invoke.MethodType.methodType;
import static org.testng.Assert.*;
public class MethodHandlesCollectArgsTest {
private static final MethodHandle TARGET_II_I = MethodHandles.empty(methodType(int.class, int.class, int.class));
private static final MethodHandle TARGET__V = MethodHandles.empty(methodType(void.class));
private static final MethodHandle FILTER_INT = MethodHandles.empty(methodType(int.class, String.class));
private static final MethodHandle FILTER_VOID = MethodHandles.empty(methodType(void.class, String.class));
@DataProvider(name = "illegalPos")
public static Object[][] illegalPos() {
return new Object[][] {
{TARGET_II_I, 2, FILTER_INT},
{TARGET_II_I, 3, FILTER_VOID},
{TARGET_II_I, -1, FILTER_INT},
{TARGET_II_I, -1, FILTER_VOID},
{TARGET__V, 0, FILTER_INT},
{TARGET__V, 1, FILTER_VOID},
{TARGET__V, -1, FILTER_VOID},
{TARGET__V, -1, FILTER_VOID}
};
}
@DataProvider(name = "validPos")
public static Object[][] validPos() {
return new Object[][] {
{TARGET_II_I, 0, FILTER_INT, methodType(int.class, String.class, int.class)},
{TARGET_II_I, 1, FILTER_INT, methodType(int.class, int.class, String.class)},
{TARGET_II_I, 0, FILTER_VOID, methodType(int.class, String.class, int.class, int.class)},
{TARGET_II_I, 1, FILTER_VOID, methodType(int.class, int.class, String.class, int.class)},
{TARGET_II_I, 2, FILTER_VOID, methodType(int.class, int.class, int.class, String.class)},
{TARGET__V, 0, FILTER_VOID, methodType(void.class, String.class)}
};
}
@Test(dataProvider="illegalPos", expectedExceptions = {IllegalArgumentException.class})
public void illegalPosition(MethodHandle target, int position, MethodHandle filter) {
MethodHandles.collectArguments(target, position, filter);
}
@Test(dataProvider="validPos")
public void legalPosition(MethodHandle target, int position, MethodHandle filter, MethodType expectedType) {
MethodHandle result = MethodHandles.collectArguments(target, position, filter);
assertEquals(result.type(), expectedType);
}
}
|
