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  *
  38  * @library /lib /
  39  * @run main/othervm jdk.jfr.api.recording.options.TestName
  40  */
  41 public class TestName {
  42 
  43     public static void main(String[] args) throws Throwable {
  44         Recording r = new Recording();
  45 
  46         Asserts.assertNotNull(r.getName(), "Default name should not be null");
  47         System.out.println("name=" + r.getName());
  48         Asserts.assertEquals(r.getName(), Long.toString(r.getId()), "Default name != id");
  49 
  50         testNames(r);
  51         r.start();
  52         testNames(r);
  53         r.stop();
  54         testNames(r);
  55         r.close();
  56     }
  57 
  58     private static void testNames(Recording r) throws Throwable {
  59         System.out.println("Recording state=" + r.getState().name());
  60 
  61         // Set simple name
  62         String name = "myName";
  63         r.setName(name);
  64         System.out.println("name=" + r.getName());
  65         Asserts.assertEquals(name, r.getName(), "Wrong get/set name");
  66 
  67         // Set null. Should get Exception and old name should be kept.
  68         verifyNull(()->{r.setName(null);}, "No NullPointerException when setName(null)");
  69         Asserts.assertEquals(name, r.getName(), "Current name overwritten after null");
  70 
  71         // Set empty name. Should work.
  72         name = "";
  73         r.setName(name);
  74         System.out.println("name=" + r.getName());
  75         Asserts.assertEquals(name, r.getName(), "Empty name is expected to work");
  76 
  77         // Test a long name.
  78         StringBuilder sb = new StringBuilder(500);
  79         while (sb.length() < 400) {
  80             sb.append("LongName-");
  81         }
  82         name = sb.toString();
  83         System.out.println("Length of long name=" + name.length());
  84         r.setName(name);
  85         System.out.println("name=" + r.getName());
  86         Asserts.assertEquals(name, r.getName(), "Wrong get/set long name");
  87     }
  88 
  89     private static void verifyNull(VoidFunction f, String msg) throws Throwable {
  90         CommonHelper.verifyException(f, msg, NullPointerException.class);
  91     }
  92 
  93 }