/*
* Copyright ( c ) 2011 , 2020 , 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
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*/
import static jdk.test.lib.Asserts.*;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.Utils;
/*
* @ test
* @ bug 7104647
* @ summary Unit test for jcmd utility . Tests jcmd options which do not send
* requests to a specific JVM process .
*
* @ library / test / lib
*
* @ run main TestJcmdDefaults
*/
public class TestJcmdDefaults {
private static final String TEST_SRC = System.getProperty("test.src" ).trim();
private static final String[] VM_ARGS = new String[] { "-XX:+UsePerfData" };
private static final String JCMD_LIST_REGEX = "(?s)^\\d+\\s*.*" ;
public static void main(String[] args) throws Exception {
testJcmdUsage("-?" );
testJcmdUsage("-h" );
testJcmdUsage("--help" );
testJcmdDefaults();
testJcmdDefaults("-l" );
}
/**
* jcmd - J - XX : + UsePerfData - ?
* jcmd - J - XX : + UsePerfData - h
* jcmd - J - XX : + UsePerfData - - help
*/
private static void testJcmdUsage(String... jcmdArgs) throws Exception {
OutputAnalyzer output = JcmdBase.jcmdNoPid(VM_ARGS, jcmdArgs);
assertEquals(output.getExitValue(), 0 );
verifyOutputAgainstFile(output);
}
/**
* jcmd - J - XX : + UsePerfData
* jcmd - J - XX : + UsePerfData - l
*/
private static void testJcmdDefaults(String... jcmdArgs) throws Exception {
OutputAnalyzer output = JcmdBase.jcmdNoPid(VM_ARGS, jcmdArgs);
output.shouldHaveExitValue(0 );
output.shouldContain("sun.tools.jcmd.JCmd" );
matchListedProcesses(output);
}
/**
* Verifies the listed processes match a certain pattern .
*
* The output should look like :
* 12246 sun . tools . jcmd . JCmd
* 24428 com . sun . javatest . regtest . MainWrapper / tmp / jtreg / jtreg - workdir / classes / sun / tools / jcmd / TestJcmdDefaults . jta
*
* @ param output The generated output from the jcmd .
*/
private static void matchListedProcesses(OutputAnalyzer output) {
output.stdoutShouldMatchByLine(JCMD_LIST_REGEX);
output.stderrShouldBeEmptyIgnoreDeprecatedWarnings();
}
private static void verifyOutputAgainstFile(OutputAnalyzer output) throws IOException {
Path path = Paths.get(TEST_SRC, "usage.out" );
List<String> fileOutput = Files.readAllLines(path);
List<String> outputAsLines = output.asLines();
assertTrue(outputAsLines.containsAll(fileOutput),
"The ouput should contain all content of " + path.toAbsolutePath());
}
}
Messung V0.5 in Prozent C=98 H=78 G=88
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-06-10)
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