| /* |
| * Copyright (C) 2012 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package libcore.java.util; |
| |
| import java.io.Serializable; |
| import java.util.AbstractCollection; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import java.util.concurrent.ConcurrentHashMap; |
| import junit.framework.TestCase; |
| |
| public final class AbstractCollectionTest extends TestCase { |
| // http://code.google.com/p/android/issues/detail?id=36519 |
| public void test_toArray() throws Exception { |
| final ConcurrentHashMap<Integer, Integer> m = new ConcurrentHashMap<Integer, Integer>(); |
| assertTrue(m.values() instanceof AbstractCollection); |
| |
| final AtomicBoolean finished = new AtomicBoolean(false); |
| |
| Thread reader = new Thread(new Runnable() { |
| @Override public void run() { |
| while (!finished.get()) { |
| m.values().toArray(); |
| m.values().toArray(new Integer[m.size()]); |
| } |
| } |
| }); |
| |
| Thread mutator = new Thread(new Runnable() { |
| @Override public void run() { |
| for (int i = 0; i < 100; ++i) { |
| m.put(-i, -i); |
| } |
| for (int i = 0; i < 4096; ++i) { |
| m.put(i, i); |
| m.remove(i); |
| } |
| finished.set(true); |
| } |
| }); |
| |
| reader.start(); |
| mutator.start(); |
| reader.join(); |
| mutator.join(); |
| } |
| } |