test/hotspot/jtreg/runtime/cds/appcds/jcmd/JCmdTestFileSafety.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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/*
 * @test
 * @bug 8265465
 * @summary Test jcmd to dump static shared archive.
 * @requires vm.cds
 * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds
 * @modules jdk.jcmd/sun.tools.common:+open
 * @compile ../test-classes/Hello.java JCmdTestDumpBase.java
 * @build sun.hotspot.WhiteBox
 * @build JCmdTestLingeredApp JCmdTestFileSafety
 * @run driver jdk.test.lib.helpers.ClassFileInstaller sun.hotspot.WhiteBox
 * @run main/othervm/timeout=480 -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI JCmdTestFileSafety
 */

import java.io.File;
import java.io.IOException;
import jdk.test.lib.cds.CDSTestUtils;
import jdk.test.lib.apps.LingeredApp;
import jdk.test.lib.Platform;

public class JCmdTestFileSafety extends JCmdTestDumpBase {

    static void test() throws Exception {
        buildJars();

        LingeredApp app = null;
        long pid;

        int  test_count = 1;
        String subDir    = "subdir";
        File outputDirFile = new File(subDir);
        if (!outputDirFile.exists()) {
            outputDirFile.mkdir();
        }
        outputDirFile.setWritable(true);
        String localFileName = subDir + File.separator + "MyStaticDump.jsa";
        setIsStatic(true/*static*/);
        // Set target dir not writable, do static dump
        print2ln(test_count++ + " Set target dir not writable, do static dump");
        setKeepArchive(true);
        app = createLingeredApp("-cp", allJars);
        pid = app.getPid();
        test(localFileName, pid, noBoot,  EXPECT_PASS);
        outputDirFile.setWritable(false);
        test(localFileName, pid, noBoot,  EXPECT_FAIL);
        app.stopApp();
        outputDirFile.setWritable(true);
        checkFileExistence(localFileName, true/*exist*/);

        setIsStatic(false/*dynamic*/);
        //  Set target dir not writable, do dynamic dump
        print2ln(test_count++ + " Set target dir not writable, do dynamic dump");
        setKeepArchive(true);
        outputDirFile.setWritable(true);
        app = createLingeredApp("-cp", allJars, "-XX:+RecordDynamicDumpInfo");
        pid = app.getPid();
        localFileName = subDir + File.separator + "MyDynamicDump.jsa";
        test(localFileName, pid, noBoot,  EXPECT_PASS);
        app.stopApp();
        // cannot dynamically dump twice, restart
        app = createLingeredApp("-cp", allJars, "-XX:+RecordDynamicDumpInfo");
        pid = app.getPid();
        outputDirFile.setWritable(false);
        test(localFileName, pid, noBoot,  EXPECT_FAIL);
        outputDirFile.setWritable(true);
        app.stopApp();
        // MyDynamicDump.jsa should exist
        checkFileExistence(localFileName, true);
        File rmFile = new File(localFileName);
        rmFile.delete();
        outputDirFile.delete();
    }

    public static void main(String... args) throws Exception {
        if (Platform.isWindows()) {
            // ON windows, File operation resulted difference from other OS.
            // Set dir to not accessible for write, we still can run the test
            // to create archive successfully which is not expected.
            throw new jtreg.SkippedException("Test skipped on Windows");
        }
        runTest(JCmdTestFileSafety::test);
    }
}