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
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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
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22   */
23  
24  /*
25   * @test
26   * @bug 6301089
27   * @summary test Collections.newSetFromMap
28   * @author Martin Buchholz
29   */
30  
31  import java.util.*;
32  
33  public class SetFromMap {
34      static volatile int passed = 0, failed = 0;
35      static void pass() { passed++; }
36      static void fail() { failed++; Thread.dumpStack(); }
37      static void unexpected(Throwable t) { failed++; t.printStackTrace(); }
38      static void check(boolean cond) { if (cond) pass(); else fail(); }
39      static void equal(Object x, Object y) {
40          if (x == null ? y == null : x.equals(y)) pass();
41          else {System.out.println(x + " not equal to " + y); fail(); }}
42  
43      public static void main(String[] args) throws Throwable {
44          try { realMain(); } catch (Throwable t) { unexpected(t); }
45  
46          System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
47          if (failed > 0) throw new Exception("Some tests failed");
48      }
49  
50      private static void realMain() throws Throwable {
51          try {
52              Map<String,Boolean> m = new IdentityHashMap<String,Boolean>();
53              Set<String> s = Collections.newSetFromMap(m);
54              String foo1 = new String("foo");
55              String foo2 = new String("foo");
56              String bar = new String("bar");
57              check(s.add(foo1));
58              check(s.add(foo2));
59              check(s.add(bar));
60              equal(s.size(), 3);
61              check(s.contains(foo1));
62              check(s.contains(foo2));
63              check(! s.contains(new String(foo1)));
64          } catch (Throwable t) { unexpected(t); }
65      }
66  }