/*
* 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.brooklyn.core.entity;
import static org.testng.Assert.assertEquals;
import java.util.Collection;
import java.util.List;
import org.apache.brooklyn.api.entity.Entity;
import org.apache.brooklyn.api.entity.EntitySpec;
import org.apache.brooklyn.api.sensor.SensorEvent;
import org.apache.brooklyn.api.sensor.SensorEventListener;
import org.apache.brooklyn.core.entity.AbstractEntity;
import org.apache.brooklyn.core.entity.Entities;
import org.apache.brooklyn.core.test.BrooklynAppUnitTestSupport;
import org.apache.brooklyn.core.test.entity.TestEntity;
import org.apache.brooklyn.test.Asserts;
import org.apache.brooklyn.util.collections.MutableMap;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Lists;
public class EntityRegistrationTest extends BrooklynAppUnitTestSupport {
private static final int TIMEOUT_MS = 10*1000;
private TestEntity entity;
private TestEntity entity2;
private List<Entity> added;
private List<Entity> removed;
@BeforeMethod(alwaysRun=true)
@Override
public void setUp() throws Exception {
super.setUp();
added = Lists.newCopyOnWriteArrayList();
removed = Lists.newCopyOnWriteArrayList();
app.subscriptions().subscribe(app, AbstractEntity.CHILD_ADDED, new SensorEventListener<Entity>() {
@Override public void onEvent(SensorEvent<Entity> event) {
added.add(event.getValue());
}});
app.subscriptions().subscribe(app, AbstractEntity.CHILD_REMOVED, new SensorEventListener<Entity>() {
@Override public void onEvent(SensorEvent<Entity> event) {
removed.add(event.getValue());
}});
}
@Test
public void testAddAndRemoveChildrenEmitsEvent() {
entity = app.createAndManageChild(EntitySpec.create(TestEntity.class));
assertCollectionEquals(app.getChildren(), ImmutableList.of(entity));
assertEqualsEventually(added, ImmutableList.of(entity));
entity2 = app.createAndManageChild(EntitySpec.create(TestEntity.class));
assertCollectionEquals(app.getChildren(), ImmutableList.of(entity, entity2));
assertEqualsEventually(added, ImmutableList.of(entity, entity2));
entity.removeChild(entity);
assertCollectionEquals(app.getChildren(), ImmutableList.of(entity2));
assertEqualsEventually(removed, ImmutableList.of(entity));
Entities.unmanage(entity2);
assertCollectionEquals(app.getChildren(), ImmutableList.of());
assertEqualsEventually(removed, ImmutableList.of(entity, entity2));
}
private <T> void assertEqualsEventually(final T actual, final T expected) {
Asserts.succeedsEventually(MutableMap.of("timeout", TIMEOUT_MS), new Runnable() {
@Override public void run() {
assertEquals(actual, expected, "actual="+actual);
}});
}
// Ignores order of vals in collection, but asserts each same size and same elements
private <T> void assertCollectionEquals(Collection<?> actual, Collection<?> expected) {
assertEquals(ImmutableSet.copyOf(actual), ImmutableSet.copyOf(expected), "actual="+actual);
assertEquals(actual.size(), expected.size(), "actual="+actual);
}
}