test/jdk/jdk/jfr/api/recording/destination/TestDestReadOnly.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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package jdk.jfr.api.recording.destination;

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.jfr.Recording;
import jdk.jfr.consumer.RecordedEvent;
import jdk.jfr.consumer.RecordingFile;
import jdk.test.lib.Asserts;
import jdk.test.lib.jfr.CommonHelper;
import jdk.test.lib.jfr.EventNames;
import jdk.test.lib.jfr.FileHelper;
import jdk.test.lib.jfr.VoidFunction;

/*
 * @test
 * @summary Test setDestination to read-only dir
 * @key jfr
 * @library /test/lib
 * @run main/othervm jdk.jfr.api.recording.destination.TestDestReadOnly
 */
public class TestDestReadOnly {

    public static void main(String[] args) throws Throwable {
        Path readOnlyDir = FileHelper.createReadOnlyDir(Paths.get(".", "readonly"));
        if (!FileHelper.isReadOnlyPath(readOnlyDir)) {
            System.out.println("Failed to create read-only dir. Running as root?. Test ignored");
            return;
        }

        Path readOnlyDest = Paths.get(readOnlyDir.toString(), "readonly.jfr");
        Recording r = new Recording();
        r.enable(EventNames.OSInformation);
        r.setToDisk(true);
        verifyException(()->{r.setDestination(readOnlyDest);}, "No exception for setDestination to read-only dir");

        System.out.println("r.getDestination() = " + r.getDestination());

        // Verify that it works if we set destination to a writable dir.
        Path dest = Paths.get(".", "my.jfr");
        r.setDestination(dest);
        r.start();
        r.stop();
        r.close();
        Asserts.assertTrue(Files.exists(dest), "No recording file: " + dest);
        List<RecordedEvent> events = RecordingFile.readAllEvents(dest);
        Asserts.assertFalse(events.isEmpty(), "No event found");
        System.out.printf("Found event %s in %s%n", events.get(0).getEventType().getName(), dest.toString());
    }

    private static void verifyException(VoidFunction f, String msg) throws Throwable {
        CommonHelper.verifyException(f, msg, IOException.class);
    }

}