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 4904074 6328220 6330389

    27  * @summary Basic tests for SimpleEntry, SimpleImmutableEntry

    28  * @author Martin Buchholz

    29  */

    30 

    31 import java.util.*;

    32 import java.util.concurrent.*;

    33 import static java.util.AbstractMap.*;

    34 

    35 public class SimpleEntries {

    36     private static String k = "foo";

    37     private static Long v = 1L;

    38     private static Long v2 = 2L;

    39     private static void realMain(String[] args) throws Throwable {

    40         testEntry(new SimpleEntry<String,Long>(k,v));

    41         testEntry(new SimpleImmutableEntry<String,Long>(k,v));

    42         testNullEntry(new SimpleEntry<String,Long>(null,null));

    43         testNullEntry(new SimpleImmutableEntry<String,Long>(null,null));

    44     }

    45 

    46     private static void testEntry(Map.Entry<String,Long> e) {

    47         equal(e.getKey(), k);

    48         equal(e.getValue(), v);

    49         equal(e, new SimpleEntry<String,Long>(k,v));

    50         check(! e.equals(new SimpleEntry<String,Long>(k,v2)));

    51         check(! e.equals(null));

    52         equal(e, new SimpleImmutableEntry<String,Long>(k,v));

    53         equal(e.toString(), k+"="+v);

    54         if (e instanceof SimpleEntry) {

    55             equal(e.setValue(v2), v);

    56             equal(e.getValue(), v2);

    57             equal(e.setValue(null), v2);

    58             equal(e.getValue(), null);

    59         } else {

    60             try { e.setValue(v2); fail(); }

    61             catch (UnsupportedOperationException t) {}

    62             catch (Throwable t) { unexpected(t); }

    63         }

    64     }

    65 

    66     private static void testNullEntry(Map.Entry<String,Long> e) {

    67         equal(e.getKey(), null);

    68         equal(e.getValue(), null);

    69         equal(e, new SimpleEntry<String,Long>(null, null));

    70         equal(e, new SimpleImmutableEntry<String,Long>(null, null));

    71         equal(e.toString(), "null=null");

    72         if (e instanceof SimpleEntry) {

    73             equal(e.setValue(v), null);

    74             equal(e.getValue(), v);

    75         } else {

    76             try { e.setValue(null); fail(); }

    77             catch (UnsupportedOperationException t) {}

    78             catch (Throwable t) { unexpected(t); }

    79         }

    80     }

    81 

    82     //--------------------- Infrastructure ---------------------------

    83     static volatile int passed = 0, failed = 0;

    84     static void pass() {passed++;}

    85     static void fail() {failed++; Thread.dumpStack();}

    86     static void fail(String msg) {System.out.println(msg); fail();}

    87     static void unexpected(Throwable t) {failed++; t.printStackTrace();}

    88     static void check(boolean cond) {if (cond) pass(); else fail();}

    89     static void equal(Object x, Object y) {

    90         if (x == null ? y == null : x.equals(y)) pass();

    91         else fail(x + " not equal to " + y);}

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

    93         try {realMain(args);} catch (Throwable t) {unexpected(t);}

    94         System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);

    95         if (failed > 0) throw new AssertionError("Some tests failed");}

    96 }