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
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
/*
* Copyright (c) 2015, 2017, 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 8179531
* @summary Check that ClassLoader.getResource works as expected in the JShell agent.
* @modules jdk.jshell
* @build KullaTesting TestingInputStream
* @run testng GetResourceTest
*/
import jdk.jshell.Snippet;
import static jdk.jshell.Snippet.Status.OVERWRITTEN;
import static jdk.jshell.Snippet.Status.VALID;
import org.testng.annotations.Test;
@Test
public class GetResourceTest extends KullaTesting {
public void checkGetResource() {
assertEval("import java.util.Arrays;");
assertEval("boolean match(byte[] data, byte[] snippet) {\n" +
" for (int i = 0; i < data.length - snippet.length; i++) {\n" +
" if (Arrays.equals(Arrays.copyOfRange(data, i, i + snippet.length), snippet)) {\n" +
" return true;\n" +
" }\n" +
" }\n" +
" return false;\n" +
"}");
assertEval("boolean test() throws Exception {\n" +
" Class c = new Object() {}.getClass().getEnclosingClass();\n" +
" byte[] data = c.getClassLoader().getResource(c.getName().replace('.', '/') + \".class\").openStream().readAllBytes();\n" +
" return match(data, \"check text\".getBytes(\"UTF-8\"));\n" +
"}");
assertEval("test()", "true");
}
public void checkRedefine() {
assertEval("import java.util.Arrays;");
assertEval("boolean match(byte[] data, byte[] snippet) {\n" +
" for (int i = 0; i < data.length - snippet.length; i++) {\n" +
" if (Arrays.equals(Arrays.copyOfRange(data, i, i + snippet.length), snippet)) {\n" +
" return true;\n" +
" }\n" +
" }\n" +
" return false;\n" +
"}");
Snippet testMethod =
methodKey(assertEval("boolean test() throws Exception {\n" +
" return false;\n" +
"}"));
assertEval("boolean test() throws Exception {\n" +
" Class c = new Object() {}.getClass().getEnclosingClass();\n" +
" byte[] data = c.getClassLoader().getResource(c.getName().replace('.', '/') + \".class\").openStream().readAllBytes();\n" +
" return match(data, \"updated variant\".getBytes(\"UTF-8\"));\n" +
"}",
IGNORE_VALUE,
null,
DiagCheck.DIAG_OK,
DiagCheck.DIAG_OK,
ste(MAIN_SNIPPET, VALID, VALID, false, null),
ste(testMethod, VALID, OVERWRITTEN, false, MAIN_SNIPPET));
assertEval("test()", "true");
}
public void checkResourceSize() {
assertEval("import java.net.*;");
assertEval("boolean test() throws Exception {\n" +
" Class c = new Object() {}.getClass().getEnclosingClass();" +
" URL url = c.getClassLoader().getResource(c.getName().replace('.', '/') + \".class\");\n" +
" URLConnection connection = url.openConnection();\n" +
" connection.connect();\n" +
" return connection.getContentLength() == connection.getInputStream().readAllBytes().length;\n" +
"}");
assertEval("test()", "true");
}
public void checkTimestampCheck() {
assertEval("import java.net.*;");
assertEval("import java.time.*;");
assertEval("import java.time.format.*;");
assertEval("long[] times(Class c) throws Exception {\n" +
" URL url = c.getClassLoader().getResource(c.getName().replace('.', '/') + \".class\");\n" +
" URLConnection connection = url.openConnection();\n" +
" connection.connect();\n" +
" return new long[] {connection.getDate(),\n" +
" connection.getLastModified()," +
" Instant.from(DateTimeFormatter.RFC_1123_DATE_TIME.parse(connection.getHeaderField(\"last-modified\"))).toEpochMilli()};\n" +
"}");
Snippet testMethod =
methodKey(assertEval("long[] test() throws Exception {\n" +
" int i = 0;\n" +
" return times(new Object() {}.getClass().getEnclosingClass());\n" +
"}"));
assertEval("long[] orig = test();");
long s = System.currentTimeMillis();
while ((System.currentTimeMillis() - s) < 1000) { //ensure time change:
try {
Thread.sleep(1000);
} catch (InterruptedException ex) {}
}
assertEval("long[] test() throws Exception {\n" +
" int i = 1;\n" +
" return times(new Object() {}.getClass().getEnclosingClass());\n" +
"}",
IGNORE_VALUE,
null,
DiagCheck.DIAG_OK,
DiagCheck.DIAG_OK,
ste(MAIN_SNIPPET, VALID, VALID, false, null),
ste(testMethod, VALID, OVERWRITTEN, false, MAIN_SNIPPET));
assertEval("long[] nue = test();");
assertEval("orig[0] < nue[0]", "true");
assertEval("orig[1] < nue[1]", "true");
assertEval("orig[0] == orig[2]", "true");
assertEval("nue[0] == nue[2]", "true");
}
public void checkFieldAccess() {
assertEval("import java.net.*;");
assertEval("Class c = new Object() {}.getClass().getEnclosingClass();");
assertEval("URL url = c.getClassLoader().getResource(c.getName().replace('.', '/') + \".class\");");
assertEval("URLConnection connection = url.openConnection();");
assertEval("connection.connect();");
assertEval("connection.getHeaderFieldKey(0)", "\"content-length\"");
assertEval("connection.getHeaderFieldKey(1)", "\"date\"");
assertEval("connection.getHeaderFieldKey(2)", "\"last-modified\"");
assertEval("connection.getHeaderFieldKey(3)", "null");
assertEval("connection.getHeaderField(0) != null", "true");
assertEval("connection.getHeaderField(1) != null", "true");
assertEval("connection.getHeaderField(2) != null", "true");
assertEval("connection.getHeaderField(3) == null", "true");
}
public void checkGetResources() {
assertEval("import java.net.*;");
assertEval("Class c = new Object() {}.getClass().getEnclosingClass();");
assertEval("c.getClassLoader().getResources(c.getName().replace('.', '/') + \".class\").hasMoreElements()", "true");
}
}
|
