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* 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
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*/
/*
* @ test
* @ bug 8179531 8010319
* @ 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, true , 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" );
}
}
Messung V0.5 in Prozent C=97 H=88 G=92
¤ Dauer der Verarbeitung: 0.3 Sekunden
¤
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