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  *
  38  * @library /lib /
  39  * @run main/othervm jdk.jfr.api.metadata.eventtype.TestGetField
  40  */
  41 public class TestGetField {
  42 
  43     public static void main(String[] args) throws Throwable {
  44         EventType type = EventType.getEventType(MyEvent.class);
  45 
  46         ValueDescriptor v = type.getField("myByte");
  47         Asserts.assertNotNull(v, "getFiled(myByte) was null");
  48         Asserts.assertEquals(v.getTypeName(), "byte", "myByte was not type byte");
  49 
  50         v = type.getField("myInt");
  51         Asserts.assertNotNull(v, "getFiled(myInt) was null");
  52         Asserts.assertEquals(v.getTypeName(), "int", "myInt was not type int");
  53 
  54         v = type.getField("myStatic");
  55         Asserts.assertNull(v, "got static field");
  56 
  57         v = type.getField("notAField");
  58         Asserts.assertNull(v, "got field that does not exist");
  59 
  60         v = type.getField("");
  61         Asserts.assertNull(v, "got field for empty name");
  62 
  63         try {
  64             v = type.getField(null);
  65             Asserts.fail("No Exception when getField(null)");
  66         } catch (NullPointerException e) {
  67             // Expected exception
  68         }
  69     }
  70 
  71     @SuppressWarnings("unused")
  72     private static class MyEvent extends Event {
  73         public byte myByte;
  74         private int myInt;
  75         public static int myStatic; // Should not be included
  76     }
  77 }