| /* |
| * 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.reef.wake.test; |
| |
| import org.apache.reef.wake.EventHandler; |
| import org.apache.reef.wake.impl.BlockingEventHandler; |
| import org.junit.Test; |
| |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.fail; |
| |
| /** |
| * Blocking event handler test. |
| */ |
| public class BlockingEventHandlerTest { |
| |
| @Test |
| public void testSingle() { |
| final AtomicInteger i = new AtomicInteger(0); |
| final AtomicInteger cnt = new AtomicInteger(0); |
| |
| final BlockingEventHandler<Integer> h = new BlockingEventHandler<>(1, new EventHandler<Iterable<Integer>>() { |
| @Override |
| public void onNext(final Iterable<Integer> value) { |
| for (final int x : value) { |
| i.getAndAdd(x); |
| cnt.incrementAndGet(); |
| } |
| } |
| }); |
| h.onNext(0xBEEF); |
| assertEquals(0xBEEF, i.get()); |
| assertEquals(1, cnt.get()); |
| } |
| |
| @Test |
| public void testMultiple() { |
| final AtomicInteger i = new AtomicInteger(0); |
| final AtomicInteger cnt = new AtomicInteger(0); |
| |
| final BlockingEventHandler<Integer> h = new BlockingEventHandler<>(1, new EventHandler<Iterable<Integer>>() { |
| @Override |
| public void onNext(final Iterable<Integer> value) { |
| for (final int x : value) { |
| i.getAndAdd(x); |
| cnt.incrementAndGet(); |
| } |
| } |
| }); |
| h.onNext(0xBEEF); |
| h.onNext(0xDEAD); |
| h.onNext(0xC0FFEE); |
| assertEquals(0xBEEF + 0xDEAD + 0xC0FFEE, i.get()); |
| assertEquals(3, cnt.get()); |
| } |
| |
| @Test |
| public void testTwoStreams() { |
| final AtomicInteger i = new AtomicInteger(0); |
| final AtomicInteger cnt = new AtomicInteger(0); |
| |
| final int num = 1000; |
| final BlockingEventHandler<Integer> h = new BlockingEventHandler<>(2 * num, new EventHandler<Iterable<Integer>>() { |
| @Override |
| public void onNext(final Iterable<Integer> value) { |
| for (final int x : value) { |
| i.getAndAdd(x); |
| cnt.incrementAndGet(); |
| } |
| } |
| }); |
| |
| final Runnable r = new Runnable() { |
| @Override |
| public void run() { |
| for (int i = 0; i < num; i++) { |
| h.onNext(i); |
| } |
| } |
| }; |
| final Thread a = new Thread(r); |
| final Thread b = new Thread(r); |
| a.start(); |
| b.start(); |
| try { |
| a.join(); |
| b.join(); |
| } catch (final InterruptedException e) { |
| fail(e.toString()); |
| } |
| |
| assertEquals(2 * (num - 1) * num / 2, i.get()); |
| assertEquals(2 * num, cnt.get()); |
| } |
| |
| @Test |
| public void testMultipleResets() { |
| final AtomicInteger i = new AtomicInteger(0); |
| final AtomicInteger cnt = new AtomicInteger(0); |
| final AtomicInteger cntcall = new AtomicInteger(0); |
| |
| final int num = 1000; |
| final int events = 10; |
| final BlockingEventHandler<Integer> h = new BlockingEventHandler<>(2 * num, new EventHandler<Iterable<Integer>>() { |
| @Override |
| public void onNext(final Iterable<Integer> value) { |
| for (final int x : value) { |
| i.getAndAdd(x); |
| cnt.incrementAndGet(); |
| } |
| cntcall.incrementAndGet(); |
| } |
| }); |
| |
| final Runnable r = new Runnable() { |
| @Override |
| public void run() { |
| for (int i = 0; i < num * events; i++) { |
| h.onNext(i); |
| } |
| } |
| }; |
| final Thread a = new Thread(r); |
| final Thread b = new Thread(r); |
| a.start(); |
| b.start(); |
| try { |
| a.join(); |
| b.join(); |
| } catch (final InterruptedException e) { |
| fail(e.toString()); |
| } |
| |
| assertEquals(2 * (num * events - 1) * (num * events) / 2, i.get()); |
| assertEquals(2 * num * events, cnt.get()); |
| assertEquals(events, cntcall.get()); |
| } |
| |
| |
| @Test |
| public void testManyStreams() { |
| final AtomicInteger i = new AtomicInteger(0); |
| final AtomicInteger cnt = new AtomicInteger(0); |
| |
| final int num = 1000; |
| final BlockingEventHandler<Integer> h = new BlockingEventHandler<>(num, new EventHandler<Iterable<Integer>>() { |
| @Override |
| public void onNext(final Iterable<Integer> value) { |
| for (final int x : value) { |
| i.getAndAdd(x); |
| cnt.incrementAndGet(); |
| } |
| } |
| }); |
| |
| final int val = 7; |
| final Runnable r = new Runnable() { |
| @Override |
| public void run() { |
| h.onNext(val); |
| } |
| }; |
| |
| final Thread[] workers = new Thread[num]; |
| for (int ii = 0; ii < workers.length; ii++) { |
| workers[ii] = new Thread(r); |
| } |
| for (final Thread w : workers) { |
| w.start(); |
| } |
| try { |
| for (final Thread w : workers) { |
| w.join(); |
| } |
| } catch (final InterruptedException e) { |
| fail(e.toString()); |
| } |
| |
| assertEquals(val * num, i.get()); |
| assertEquals(num, cnt.get()); |
| |
| } |
| |
| } |