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 *

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 * 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

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 *

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import static jdk.testlibrary.Asserts.*;

import java.io.File;

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.testlibrary.JcmdBase;

import jdk.testlibrary.OutputAnalyzer;

import jdk.testlibrary.Utils;

/*

 * @test

 * @bug 7104647

 * @summary Unit test for jcmd utility. Tests jcmd options which do not send

 * requests to a specific JVM process.

 *

 * @library /lib/testlibrary

 *

 * @build jdk.testlibrary.*

 * @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("-h");

        testJcmdDefaults();

        testJcmdDefaults("-l");

    }

    /**

     * jcmd -J-XX:+UsePerfData -h

     */

    private static void testJcmdUsage(String... jcmdArgs) throws Exception {

        OutputAnalyzer output = JcmdBase.jcmdNoPid(VM_ARGS, jcmdArgs);

        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.

     * @throws Exception

     */

    private static void matchListedProcesses(OutputAnalyzer output) throws Exception {

        int matchedCount = output.shouldMatchByLine(JCMD_LIST_REGEX);

        assertGreaterThan(matchedCount , 0,

                "Found no lines matching pattern: " + JCMD_LIST_REGEX);

    }

    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());

    }

}