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* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
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/*
* @ test
* @ bug 6301089
* @ summary test Collections . newSetFromMap
* @ author Martin Buchholz
*/
import java.util.Collections;
import java.util.IdentityHashMap;
import java.util.Map;
import java.util.Set;
public class SetFromMap {
static volatile int passed = 0 , failed = 0 ;
static void pass() { passed++; }
static void fail() { failed++; Thread .dumpStack(); }
static void unexpected(Throwable t) { failed++; t.printStackTrace(); }
static void check(boolean cond) { if (cond) pass(); else fail(); }
static void equal(Object x, Object y) {
if (x == null ? y == null : x.equals(y)) pass();
else {System.out.println(x + " not equal to " + y); fail(); }}
public static void main(String[] args) throws Throwable {
try { realMain(); } catch (Throwable t) { unexpected(t); }
System.out.printf("%nPassed = %d, failed = %d%n%n" , passed, failed);
if (failed > 0 ) throw new Exception("Some tests failed" );
}
private static void realMain() throws Throwable {
try {
Map<String,Boolean > m = new IdentityHashMap<>();
Set<String> s = Collections.newSetFromMap(m);
String foo1 = new String("foo" );
String foo2 = new String("foo" );
String bar = new String("bar" );
check(s.add(foo1));
check(s.add(foo2));
check(s.add(bar));
equal(s.size(), 3 );
check(s.contains(foo1));
check(s.contains(foo2));
check(! s.contains(new String(foo1)));
} catch (Throwable t) { unexpected(t); }
}
}
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