1 /*
   2  * Copyright (c) 2005, 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.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 6250772
  27  * @summary Test that *List objects are checked after asList is called.
  28  * @author Eamonn McManus
  29  * @run clean ListTypeCheckTest
  30  * @run build ListTypeCheckTest
  31  * @run main ListTypeCheckTest
  32  */
  33 
  34 import java.lang.reflect.*;
  35 import java.util.*;
  36 import javax.management.*;
  37 import javax.management.relation.*;
  38 
  39 /* For compatibility reasons, the classes AttributeList, RoleList,
  40  * and RoleUnresolvedList all extend ArrayList<Object> even though
  41  * logically they should extend ArrayList<Attribute> etc.  They are
  42  * all specified to have a method asList() with return type
  43  * List<Attribute> etc, and to refuse to add any object other than
  44  * an Attribute etc once this method has been called, but not before.
  45  */
  46 public class ListTypeCheckTest {
  47     public static void main(String[] args) throws Exception {
  48         Class[] classes = {
  49             AttributeList.class, RoleList.class, RoleUnresolvedList.class,
  50         };
  51         for (Class c : classes)
  52             test((Class<? extends ArrayList>) c);
  53     }
  54 
  55     private static void test(Class<? extends ArrayList> c) throws Exception {
  56         System.out.println("Testing " + c.getName());
  57         ArrayList al = c.newInstance();
  58         test(al);
  59     }
  60 
  61     private static void test(ArrayList al) throws Exception {
  62         test(al, true);
  63         al.clear();
  64         Method m = al.getClass().getMethod("asList");
  65         m.invoke(al);
  66         test(al, false);
  67     }
  68 
  69     private static void test(ArrayList al, boolean allowsBogus) throws Exception {
  70         for (int i = 0; i < 5; i++) {
  71             try {
  72                 switch (i) {
  73                     case 0:
  74                         al.add("yo");
  75                         break;
  76                     case 1:
  77                         al.add(0, "yo");
  78                         break;
  79                     case 2:
  80                         al.addAll(Arrays.asList("foo", "bar"));
  81                         break;
  82                     case 3:
  83                         al.addAll(0, Arrays.asList("foo", "bar"));
  84                         break;
  85                     case 4:
  86                         al.set(0, "foo");
  87                         break;
  88                     default:
  89                         throw new Exception("test wrong");
  90                 }
  91                 if (!allowsBogus)
  92                     throw new Exception("op allowed but should fail");
  93             } catch (IllegalArgumentException e) {
  94                 if (allowsBogus)
  95                     throw new Exception("got exception but should not", e);
  96             }
  97         }
  98     }
  99 }