+++ /dev/null
-package org.apache.lucene.util;
-
-/**
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You 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.
- */
-
-import java.util.Random;
-
-import org.apache.lucene.util.SetOnce.AlreadySetException;
-import org.junit.Test;
-
-public class TestSetOnce extends LuceneTestCase {
-
- private static final class SetOnceThread extends Thread {
- SetOnce<Integer> set;
- boolean success = false;
- final Random RAND;
-
- public SetOnceThread(Random random) {
- RAND = new Random(random.nextLong());
- }
-
- @Override
- public void run() {
- try {
- sleep(RAND.nextInt(10)); // sleep for a short time
- set.set(new Integer(Integer.parseInt(getName().substring(2))));
- success = true;
- } catch (InterruptedException e) {
- // ignore
- } catch (RuntimeException e) {
- // TODO: change exception type
- // expected.
- success = false;
- }
- }
- }
-
- @Test
- public void testEmptyCtor() throws Exception {
- SetOnce<Integer> set = new SetOnce<Integer>();
- assertNull(set.get());
- }
-
- @Test(expected=AlreadySetException.class)
- public void testSettingCtor() throws Exception {
- SetOnce<Integer> set = new SetOnce<Integer>(new Integer(5));
- assertEquals(5, set.get().intValue());
- set.set(new Integer(7));
- }
-
- @Test(expected=AlreadySetException.class)
- public void testSetOnce() throws Exception {
- SetOnce<Integer> set = new SetOnce<Integer>();
- set.set(new Integer(5));
- assertEquals(5, set.get().intValue());
- set.set(new Integer(7));
- }
-
- @Test
- public void testSetMultiThreaded() throws Exception {
- final SetOnce<Integer> set = new SetOnce<Integer>();
- SetOnceThread[] threads = new SetOnceThread[10];
- for (int i = 0; i < threads.length; i++) {
- threads[i] = new SetOnceThread(random);
- threads[i].setName("t-" + (i+1));
- threads[i].set = set;
- }
-
- for (Thread t : threads) {
- t.start();
- }
-
- for (Thread t : threads) {
- t.join();
- }
-
- for (SetOnceThread t : threads) {
- if (t.success) {
- int expectedVal = Integer.parseInt(t.getName().substring(2));
- assertEquals("thread " + t.getName(), expectedVal, t.set.get().intValue());
- }
- }
- }
-
-}