1 /*
   2  * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 import static jdk.test.lib.Asserts.*;
  25 
  26 import java.io.IOException;
  27 import java.nio.file.Files;
  28 import java.nio.file.Path;
  29 import java.nio.file.Paths;
  30 import java.util.List;
  31 
  32 import jdk.test.lib.process.OutputAnalyzer;
  33 import jdk.test.lib.Utils;
  34 
  35 /*
  36  * @test
  37  * @bug 7104647
  38  * @summary Unit test for jcmd utility. Tests jcmd options which do not send
  39  * requests to a specific JVM process.
  40  *
  41  * @library /test/lib
  42  *
  43  * @run main TestJcmdDefaults
  44  */
  45 public class TestJcmdDefaults {
  46 
  47     private static final String TEST_SRC = System.getProperty("test.src").trim();
  48     private static final String[] VM_ARGS = new String[] { "-XX:+UsePerfData" };
  49     private static final String JCMD_LIST_REGEX = "(?s)^\\d+\\s*.*";
  50 
  51     public static void main(String[] args) throws Exception {
  52         testJcmdUsage("-?");
  53         testJcmdUsage("-h");
  54         testJcmdUsage("--help");
  55         testJcmdDefaults();
  56         testJcmdDefaults("-l");
  57     }
  58 
  59     /**
  60      * jcmd -J-XX:+UsePerfData -?
  61      * jcmd -J-XX:+UsePerfData -h
  62      * jcmd -J-XX:+UsePerfData --help
  63      */
  64     private static void testJcmdUsage(String... jcmdArgs) throws Exception {
  65         OutputAnalyzer output = JcmdBase.jcmdNoPid(VM_ARGS, jcmdArgs);
  66 
  67         assertEquals(output.getExitValue(), 0);
  68         verifyOutputAgainstFile(output);
  69     }
  70 
  71     /**
  72      * jcmd -J-XX:+UsePerfData
  73      * jcmd -J-XX:+UsePerfData -l
  74      */
  75     private static void testJcmdDefaults(String... jcmdArgs) throws Exception {
  76         OutputAnalyzer output = JcmdBase.jcmdNoPid(VM_ARGS, jcmdArgs);
  77 
  78         output.shouldHaveExitValue(0);
  79         output.shouldContain("sun.tools.jcmd.JCmd");
  80         matchListedProcesses(output);
  81     }
  82 
  83     /**
  84      * Verifies the listed processes match a certain pattern.
  85      *
  86      * The output should look like:
  87      * 12246 sun.tools.jcmd.JCmd
  88      * 24428 com.sun.javatest.regtest.MainWrapper /tmp/jtreg/jtreg-workdir/classes/sun/tools/jcmd/TestJcmdDefaults.jta
  89      *
  90      * @param output The generated output from the jcmd.
  91      */
  92     private static void matchListedProcesses(OutputAnalyzer output) {
  93         output.shouldMatchByLine(JCMD_LIST_REGEX);
  94     }
  95 
  96     private static void verifyOutputAgainstFile(OutputAnalyzer output) throws IOException {
  97         Path path = Paths.get(TEST_SRC, "usage.out");
  98         List<String> fileOutput = Files.readAllLines(path);
  99         List<String> outputAsLines = output.asLines();
 100         assertTrue(outputAsLines.containsAll(fileOutput),
 101                 "The ouput should contain all content of " + path.toAbsolutePath());
 102     }
 103 
 104 }