1 /*

     2  * Copyright (c) 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.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package jdk.jfr.api.recording.options;

    27 

    28 import jdk.jfr.Recording;

    29 import jdk.test.lib.Asserts;

    30 import jdk.test.lib.jfr.CommonHelper;

    31 import jdk.test.lib.jfr.VoidFunction;

    32 

    33 /*

    34  * @test

    35  * @summary Test setName().

    36  * @key jfr

    37  * @library /test/lib

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

    39  */

    40 public class TestName {

    41 

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

    43         Recording r = new Recording();

    44 

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

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

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

    48 

    49         testNames(r);

    50         r.start();

    51         testNames(r);

    52         r.stop();

    53         testNames(r);

    54         r.close();

    55     }

    56 

    57     private static void testNames(Recording r) throws Throwable {

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

    59 

    60         // Set simple name

    61         String name = "myName";

    62         r.setName(name);

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

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

    65 

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

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

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

    69 

    70         // Set empty name. Should work.

    71         name = "";

    72         r.setName(name);

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

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

    75 

    76         // Test a long name.

    77         StringBuilder sb = new StringBuilder(500);

    78         while (sb.length() < 400) {

    79             sb.append("LongName-");

    80         }

    81         name = sb.toString();

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

    83         r.setName(name);

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

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

    86     }

    87 

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

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

    90     }

    91 

    92 }