| /* |
| * 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.cassandra.utils.concurrent; |
| |
| import java.util.function.Supplier; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| public class CountDownLatchTest extends AbstractTestAwaitable<CountDownLatch> |
| { |
| @Test |
| public void testAsync() |
| { |
| testOne(() -> new CountDownLatch.Async(1)); |
| testNone(() -> new CountDownLatch.Async(0)); |
| } |
| |
| @Test |
| public void testSync() |
| { |
| testOne(() -> new CountDownLatch.Sync(1)); |
| testNone(() -> new CountDownLatch.Sync(0)); |
| } |
| |
| void testOne(Supplier<CountDownLatch> cs) |
| { |
| CountDownLatch c = cs.get(); |
| testOneTimeout(c); |
| Assert.assertEquals(1, c.count()); |
| |
| testOneInterrupt(c); |
| Assert.assertEquals(1, c.count()); |
| |
| testOneSuccess(c, CountDownLatch::decrement); |
| Assert.assertEquals(0, c.count()); |
| } |
| |
| void testNone(Supplier<CountDownLatch> cs) |
| { |
| CountDownLatch c = cs.get(); |
| Assert.assertEquals(0, c.count()); |
| testOneSuccess(c, ignore -> {}); |
| } |
| } |