Java tutorial
/* * Copyright (C) 2010 Benoit Guerout <bguerout at gmail dot com> * * 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 fr.keemto.scheduling; import fr.keemto.config.CoreConfig; import fr.keemto.config.SchedulingConfig; import fr.keemto.core.Task; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; import org.springframework.test.context.support.AnnotationConfigContextLoader; import java.util.concurrent.CountDownLatch; import java.util.concurrent.TimeUnit; import static org.hamcrest.Matchers.equalTo; import static org.junit.Assert.assertThat; @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(classes = { CoreConfig.class, SchedulingConfig.class }, loader = AnnotationConfigContextLoader.class) public class ScheduledTaskIT { @Autowired private TaskScheduler scheduler; @Test public void shouldExecuteFetcherAsychronouslyWithDelay() throws Exception { CountDownLatch latch = new CountDownLatch(10); Task countDownTask = new CountDownTask(latch); scheduler.scheduleTask(countDownTask); latch.await(2000, TimeUnit.MILLISECONDS); assertThat(latch.getCount(), equalTo((long) 0)); } public class CountDownTask implements Task { private final CountDownLatch latch; public CountDownTask(CountDownLatch latch) { this.latch = latch; } @Override public String getTaskId() { return "countdown"; } @Override public long getDelay() { return 100; } @Override public void run() { latch.countDown(); } } }