| /* |
| * Copyright (c) 2011, 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 5045147 |
| * @summary Test handling of null with empty Map |
| * @author Mike Duigou |
| */ |
| |
| import java.util.*; |
| import java.util.concurrent.*; |
| import java.util.concurrent.atomic.*; |
| import java.lang.reflect.*; |
| |
| public class EmptyMapAndNulls { |
| |
| @SuppressWarnings("rawtypes") |
| static void realMain(String[] args) throws Throwable { |
| // No comparator |
| Map<String,String> comparable = new TreeMap<>(); |
| |
| // insert null into empty map (5045147 failure) |
| try { |
| comparable.put(null, "anything"); |
| fail("null shouldn't be accepted"); |
| } catch (NullPointerException failed) { |
| pass(); |
| } |
| |
| // insert non-null into empty map |
| try { |
| comparable.put("test", "anything"); |
| pass(); |
| } catch (NullPointerException failed) { |
| fail(); |
| } |
| |
| // insert null into non-empty map |
| try { |
| comparable.put(null, "anything"); |
| fail("null shouldn't be accepted"); |
| } catch (NullPointerException failed) { |
| pass(); |
| } |
| |
| // Comparator (String.CASE_INSENSITIVE_ORDER). Intentionally a raw type. |
| Map comparator = new TreeMap(String.CASE_INSENSITIVE_ORDER); |
| |
| // insert null into empty map (5045147 failure) |
| try { |
| comparator.put(null, "anything"); |
| fail("null shouldn't be accepted"); |
| } catch (NullPointerException failed) { |
| pass(); |
| } |
| |
| // insert non-null into empty map |
| try { |
| comparator.put("test", "anything"); |
| pass(); |
| } catch (NullPointerException failed) { |
| fail(); |
| } |
| |
| // insert null into non-empty map |
| try { |
| comparator.put(null, "anything"); |
| fail("null shouldn't be accepted"); |
| } catch (NullPointerException failed) { |
| pass(); |
| } |
| |
| comparator.clear(); |
| |
| // insert non-String into empty map (5045147 failure) |
| try { |
| comparator.put(new Object(), "anything"); |
| fail("Object shouldn't be accepted"); |
| } catch (ClassCastException failed) { |
| pass(); |
| } |
| |
| } |
| |
| //--------------------- Infrastructure --------------------------- |
| static volatile int passed = 0, failed = 0; |
| static void pass() {passed++;} |
| static void fail() {failed++; Thread.dumpStack();} |
| static void fail(String msg) {System.out.println(msg); fail();} |
| 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 fail(x + " not equal to " + y);} |
| public static void main(String[] args) throws Throwable { |
| try {realMain(args);} catch (Throwable t) {unexpected(t);} |
| System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed); |
| if (failed > 0) throw new AssertionError("Some tests failed");} |
| } |