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