1 /*
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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
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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  *
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17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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23 
24 /*
25  * @test
26  * @bug 6301089
27  * @summary test Collections.newSetFromMap
28  * @author Martin Buchholz
29  */
30 
31 package test.java.util.Collections;
32 
33 import java.util.Collections;
34 import java.util.IdentityHashMap;
35 import java.util.Map;
36 import java.util.Set;
37 
38 public class SetFromMap {
39     static volatile int passed = 0, failed = 0;
pass()40     static void pass() { passed++; }
fail()41     static void fail() { failed++; Thread.dumpStack(); }
unexpected(Throwable t)42     static void unexpected(Throwable t) { failed++; t.printStackTrace(); }
check(boolean cond)43     static void check(boolean cond) { if (cond) pass(); else fail(); }
equal(Object x, Object y)44     static void equal(Object x, Object y) {
45         if (x == null ? y == null : x.equals(y)) pass();
46         else {System.out.println(x + " not equal to " + y); fail(); }}
47 
main(String[] args)48     public static void main(String[] args) throws Throwable {
49         try { realMain(); } catch (Throwable t) { unexpected(t); }
50 
51         System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
52         if (failed > 0) throw new Exception("Some tests failed");
53     }
54 
realMain()55     private static void realMain() throws Throwable {
56         try {
57             Map<String,Boolean> m = new IdentityHashMap<>();
58             Set<String> s = Collections.newSetFromMap(m);
59             String foo1 = new String("foo");
60             String foo2 = new String("foo");
61             String bar = new String("bar");
62             check(s.add(foo1));
63             check(s.add(foo2));
64             check(s.add(bar));
65             equal(s.size(), 3);
66             check(s.contains(foo1));
67             check(s.contains(foo2));
68             check(! s.contains(new String(foo1)));
69         } catch (Throwable t) { unexpected(t); }
70     }
71 }
72