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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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package jdk.jfr.api.recording.options;

import jdk.jfr.Recording;

import jdk.test.lib.Asserts;

import jdk.test.lib.jfr.CommonHelper;

import jdk.test.lib.jfr.VoidFunction;

 * @test

 * @summary Test setName().

 * @key jfr

 * @library /test/lib

 * @run main/othervm jdk.jfr.api.recording.options.TestName

 */

public class TestName {

    public static void main(String[] args) throws Throwable {

        Recording r = new Recording();

        Asserts.assertNotNull(r.getName(), "Default name should not be null");

        System.out.println("name=" + r.getName());

        Asserts.assertEquals(r.getName(), Long.toString(r.getId()), "Default name != id");

        testNames(r);

        r.start();

        testNames(r);

        r.stop();

        testNames(r);

        r.close();

    }

    private static void testNames(Recording r) throws Throwable {

        System.out.println("Recording state=" + r.getState().name());

        // Set simple name

        String name = "myName";

        r.setName(name);

        System.out.println("name=" + r.getName());

        Asserts.assertEquals(name, r.getName(), "Wrong get/set name");

        // Set null. Should get Exception and old name should be kept.

        verifyNull(()->{r.setName(null);}, "No NullPointerException when setName(null)");

        Asserts.assertEquals(name, r.getName(), "Current name overwritten after null");

        // Set empty name. Should work.

        name = "";

        r.setName(name);

        System.out.println("name=" + r.getName());

        Asserts.assertEquals(name, r.getName(), "Empty name is expected to work");

        // Test a long name.

        StringBuilder sb = new StringBuilder(500);

        while (sb.length() < 400) {

            sb.append("LongName-");

        }

        name = sb.toString();

        System.out.println("Length of long name=" + name.length());

        r.setName(name);

        System.out.println("name=" + r.getName());

        Asserts.assertEquals(name, r.getName(), "Wrong get/set long name");

    }

    private static void verifyNull(VoidFunction f, String msg) throws Throwable {

        CommonHelper.verifyException(f, msg, NullPointerException.class);

    }

}