| /** |
| * 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. |
| */ |
| package org.apache.curator; |
| |
| import static org.mockito.Matchers.anyBoolean; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.times; |
| import static org.mockito.Mockito.verify; |
| import static org.mockito.Mockito.verifyNoMoreInteractions; |
| import static org.mockito.Mockito.when; |
| |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.Semaphore; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.curator.connection.ClassicConnectionHandlingPolicy; |
| import org.apache.curator.retry.RetryOneTime; |
| import org.apache.curator.utils.EnsurePath; |
| import org.apache.zookeeper.ZooKeeper; |
| import org.apache.zookeeper.data.Stat; |
| import org.mockito.Mockito; |
| import org.mockito.invocation.InvocationOnMock; |
| import org.mockito.stubbing.Answer; |
| import org.testng.Assert; |
| import org.testng.annotations.Test; |
| |
| public class TestEnsurePath |
| { |
| @Test |
| public void testBasic() throws Exception |
| { |
| ZooKeeper client = mock(ZooKeeper.class, Mockito.RETURNS_MOCKS); |
| CuratorZookeeperClient curator = mock(CuratorZookeeperClient.class); |
| RetryPolicy retryPolicy = new RetryOneTime(1); |
| RetryLoop retryLoop = new RetryLoop(retryPolicy, null); |
| when(curator.getConnectionHandlingPolicy()).thenReturn(new ClassicConnectionHandlingPolicy()); |
| when(curator.getZooKeeper()).thenReturn(client); |
| when(curator.getRetryPolicy()).thenReturn(retryPolicy); |
| when(curator.newRetryLoop()).thenReturn(retryLoop); |
| |
| Stat fakeStat = mock(Stat.class); |
| when(client.exists(Mockito.<String>any(), anyBoolean())).thenReturn(fakeStat); |
| |
| EnsurePath ensurePath = new EnsurePath("/one/two/three"); |
| ensurePath.ensure(curator); |
| |
| verify(client, times(3)).exists(Mockito.<String>any(), anyBoolean()); |
| |
| ensurePath.ensure(curator); |
| verifyNoMoreInteractions(client); |
| ensurePath.ensure(curator); |
| verifyNoMoreInteractions(client); |
| } |
| |
| @Test |
| public void testSimultaneous() throws Exception |
| { |
| ZooKeeper client = mock(ZooKeeper.class, Mockito.RETURNS_MOCKS); |
| RetryPolicy retryPolicy = new RetryOneTime(1); |
| RetryLoop retryLoop = new RetryLoop(retryPolicy, null); |
| final CuratorZookeeperClient curator = mock(CuratorZookeeperClient.class); |
| when(curator.getConnectionHandlingPolicy()).thenReturn(new ClassicConnectionHandlingPolicy()); |
| when(curator.getZooKeeper()).thenReturn(client); |
| when(curator.getRetryPolicy()).thenReturn(retryPolicy); |
| when(curator.newRetryLoop()).thenReturn(retryLoop); |
| |
| final Stat fakeStat = mock(Stat.class); |
| final CountDownLatch startedLatch = new CountDownLatch(2); |
| final CountDownLatch finishedLatch = new CountDownLatch(2); |
| final Semaphore semaphore = new Semaphore(0); |
| when(client.exists(Mockito.<String>any(), anyBoolean())).thenAnswer |
| ( |
| new Answer<Stat>() |
| { |
| @Override |
| public Stat answer(InvocationOnMock invocation) throws Throwable |
| { |
| semaphore.acquire(); |
| return fakeStat; |
| } |
| } |
| ); |
| |
| final EnsurePath ensurePath = new EnsurePath("/one/two/three"); |
| ExecutorService service = Executors.newCachedThreadPool(); |
| for ( int i = 0; i < 2; ++i ) |
| { |
| service.submit |
| ( |
| new Callable<Void>() |
| { |
| @Override |
| public Void call() throws Exception |
| { |
| startedLatch.countDown(); |
| ensurePath.ensure(curator); |
| finishedLatch.countDown(); |
| return null; |
| } |
| } |
| ); |
| } |
| |
| Assert.assertTrue(startedLatch.await(10, TimeUnit.SECONDS)); |
| semaphore.release(3); |
| Assert.assertTrue(finishedLatch.await(10, TimeUnit.SECONDS)); |
| verify(client, times(3)).exists(Mockito.<String>any(), anyBoolean()); |
| |
| ensurePath.ensure(curator); |
| verifyNoMoreInteractions(client); |
| ensurePath.ensure(curator); |
| verifyNoMoreInteractions(client); |
| } |
| } |