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.metadata.eventtype;
  27 
  28 import jdk.jfr.Event;
  29 import jdk.jfr.EventType;
  30 import jdk.jfr.ValueDescriptor;
  31 import jdk.test.lib.Asserts;
  32 
  33 /*
  34  * @test
  35  * @summary Test getField()
  36  * @key jfr
  37  * @library /test/lib
  38  * @run main/othervm jdk.jfr.api.metadata.eventtype.TestGetField
  39  */
  40 public class TestGetField {
  41 
  42     public static void main(String[] args) throws Throwable {
  43         EventType type = EventType.getEventType(MyEvent.class);
  44 
  45         ValueDescriptor v = type.getField("myByte");
  46         Asserts.assertNotNull(v, "getFiled(myByte) was null");
  47         Asserts.assertEquals(v.getTypeName(), "byte", "myByte was not type byte");
  48 
  49         v = type.getField("myInt");
  50         Asserts.assertNotNull(v, "getFiled(myInt) was null");
  51         Asserts.assertEquals(v.getTypeName(), "int", "myInt was not type int");
  52 
  53         v = type.getField("myStatic");
  54         Asserts.assertNull(v, "got static field");
  55 
  56         v = type.getField("notAField");
  57         Asserts.assertNull(v, "got field that does not exist");
  58 
  59         v = type.getField("");
  60         Asserts.assertNull(v, "got field for empty name");
  61 
  62         try {
  63             v = type.getField(null);
  64             Asserts.fail("No Exception when getField(null)");
  65         } catch (NullPointerException e) {
  66             // Expected exception
  67         }
  68     }
  69 
  70     @SuppressWarnings("unused")
  71     private static class MyEvent extends Event {
  72         public byte myByte;
  73         private int myInt;
  74         public static int myStatic; // Should not be included
  75     }
  76 }