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BlockedNamespacesTest.java
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BlockedNamespacesTest.java
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/*
* Copyright (c) 2017 Contributors to the Eclipse Foundation
*
* See the NOTICE file(s) distributed with this work for additional
* information regarding copyright ownership.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*/
package org.eclipse.ditto.internal.utils.namespaces;
import static org.assertj.core.api.Assertions.assertThat;
import java.util.function.Supplier;
import org.eclipse.ditto.internal.utils.ddata.DistributedData;
import org.eclipse.ditto.internal.utils.ddata.DistributedDataConfig;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import com.typesafe.config.ConfigFactory;
import org.apache.pekko.actor.ActorSystem;
import org.apache.pekko.cluster.ddata.ORSet;
import org.apache.pekko.cluster.ddata.Replicator;
import org.apache.pekko.stream.Attributes;
import org.apache.pekko.testkit.javadsl.TestKit;
/**
* Unit test for {@link BlockedNamespaces}.
*/
public final class BlockedNamespacesTest {
private ActorSystem actorSystem;
private DistributedDataConfig config;
@Before
public void setup() {
actorSystem = ActorSystem.create(getClass().getSimpleName(), ConfigFactory.load("test.conf"));
config = DistributedData.createConfig(actorSystem, "replicator", "");
}
@After
public void tearDown() {
if (actorSystem != null) {
TestKit.shutdownActorSystem(actorSystem);
actorSystem = null;
}
}
@Test
public void startWithDefaultConfig() throws Exception {
testCRUD(BlockedNamespaces.of(actorSystem), actorSystem);
}
@Test
public void startWithoutRole() throws Exception {
testCRUD(BlockedNamespaces.create(config, actorSystem), actorSystem);
}
@Test
public void startWithMatchingRole() throws Exception {
testCRUD(BlockedNamespaces.create(DistributedData.createConfig(actorSystem, "replicator", "blocked-namespaces-aware"),
actorSystem), actorSystem);
}
@Test
public void startSeveralTimes() throws Exception {
// This test simulates the situation where the root actor of a Ditto service restarts several times.
// GIVEN: Many blocked-namespaces objects were obtained in the same actor system.
final Supplier<BlockedNamespaces> blockedNamespacesSupplier = () -> BlockedNamespaces.of(actorSystem);
for (int i = 0; i < 10; ++i) {
blockedNamespacesSupplier.get();
}
// WHEN: Another blocked-namespaces object is obtained.
// THEN: It fulfills its function.
testCRUD(blockedNamespacesSupplier.get(), actorSystem);
}
@Test
public void startWithWrongRole() {
// logging disabled to not print expected stacktrace; re-enable logging to debug.
actorSystem.eventStream().setLogLevel(Attributes.logLevelOff());
new TestKit(actorSystem) {{
final BlockedNamespaces underTest = BlockedNamespaces.create(DistributedData.createConfig(actorSystem,
"replicator", "wrong-role"), actorSystem);
watch(underTest.getReplicator());
expectTerminated(underTest.getReplicator());
}};
}
@Test
@SuppressWarnings("unchecked")
public void subscribeForChanges() throws Exception {
new TestKit(actorSystem) {{
final BlockedNamespaces underTest = BlockedNamespaces.of(actorSystem);
underTest.subscribeForChanges(getRef());
final String namespace = "ns1";
assertThat(underTest.contains(namespace).toCompletableFuture().get()).isFalse();
// wait for a round trip to the replicator to ensure subscription is active
underTest.add(namespace).toCompletableFuture().get();
assertThat(underTest.contains(namespace).toCompletableFuture().get()).isTrue();
final ORSet change1 = (ORSet) expectMsgClass(Replicator.Changed.class).dataValue();
underTest.remove(namespace).toCompletableFuture().get();
assertThat(underTest.contains(namespace).toCompletableFuture().get()).isFalse();
final ORSet change2 = (ORSet) expectMsgClass(Replicator.Changed.class).dataValue();
underTest.add("ns2");
final ORSet change3 = (ORSet) expectMsgClass(Replicator.Changed.class).dataValue();
underTest.add("ns3");
final ORSet change4 = (ORSet) expectMsgClass(Replicator.Changed.class).dataValue();
assertThat(change1.getElements()).containsExactly("ns1");
assertThat(change2.getElements()).isEmpty();
assertThat(change3.getElements()).containsExactly("ns2");
assertThat(change4.getElements()).containsExactly("ns2", "ns3");
}};
}
private static void testCRUD(final BlockedNamespaces underTest, final ActorSystem actorSystem) throws Exception {
new TestKit(actorSystem) {{
final String namespace = "dummy.namespace";
assertThat(underTest.contains(namespace).toCompletableFuture().get()).isFalse();
underTest.add(namespace).toCompletableFuture().get();
assertThat(underTest.contains(namespace).toCompletableFuture().get()).isTrue();
underTest.remove(namespace).toCompletableFuture().get();
assertThat(underTest.contains(namespace).toCompletableFuture().get()).isFalse();
}};
}
}