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/*
* Copyright (c) 2001, 2005, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 4485486 6197726 6232484
* @summary IdentityHashMap's entrySet toArray tests
* @author Josh Bloch, Martin Buchholz
*/
import java.util.ArrayList;
import java.util.IdentityHashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
public class ToArray {
public static void main(String[] args) {
//----------------------------------------------------------------
// new ArrayList(IdentityHashMap.entrySet())
// used to return bogus entries.
//----------------------------------------------------------------
Map<String,String> mm = new IdentityHashMap<>();
mm.put("foo", "bar");
mm.put("baz", "quux");
List<Map.Entry<String,String>> lm = new ArrayList<>(mm.entrySet());
String s = lm.toString();
if (! (s.equals("[foo=bar, baz=quux]") ||
s.equals("[baz=quux, foo=bar]")))
throw new Error("bad string");
//----------------------------------------------------------------
// IdentityHashMap's lack of internal entry objects caused
// the inherited (AbstractMap) version of toArray to
// return garbage when called on the entrySet view.
//----------------------------------------------------------------
Map m = new IdentityHashMap();
m.put("french", "connection");
m.put("polish", "sausage");
Object[] mArray = m.entrySet().toArray();
if (mArray[0] == mArray[1])
throw new RuntimeException("Broken");
mArray[0].toString();
mArray[1].toString();
//----------------------------------------------------------------
// IdentityHashMap.entrySet().toArray(T[] a) used to simply
// return toArray() !
//----------------------------------------------------------------
IdentityHashMap<Integer,Integer> map = new IdentityHashMap<>();
Set<Map.Entry<Integer,Integer>> es = map.entrySet();
if (es.toArray().length != 0)
throw new Error("non-empty");
if (es.toArray(new Object[]{Boolean.TRUE})[0] != null)
throw new Error("non-null");
map.put(7,49);
if (es.toArray().length != 1)
throw new Error("length");
Object[] x = es.toArray(new Object[]{Boolean.TRUE, Boolean.TRUE});
if (x[1] != null)
throw new Error("non-null");
Map.Entry e = (Map.Entry) x[0];
if (! e.getKey().equals(new Integer(7)))
throw new Error("bad key");
if (! e.getValue().equals(new Integer(49)))
throw new Error("bad value");
}
}
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