| /* |
| * 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.*; |
| |
| 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"); |
| } |
| } |