90 lines
3.6 KiB
Java
90 lines
3.6 KiB
Java
/*
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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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* @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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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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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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// 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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mArray[0].toString();
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mArray[1].toString();
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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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}
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