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GenericMqttSubscribeFactoryTest.java
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GenericMqttSubscribeFactoryTest.java
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/*
* Copyright (c) 2022 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.connectivity.service.messaging.mqtt.hivemq.subscribing;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
import static org.assertj.core.api.Assertions.assertThatNullPointerException;
import static org.mutabilitydetector.unittesting.AllowedReason.provided;
import static org.mutabilitydetector.unittesting.MutabilityAssert.assertInstancesOf;
import static org.mutabilitydetector.unittesting.MutabilityMatchers.areImmutable;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.Optional;
import java.util.Set;
import java.util.function.Function;
import java.util.stream.Collectors;
import org.eclipse.ditto.connectivity.model.Source;
import org.junit.Test;
import org.mockito.Mockito;
import com.hivemq.client.mqtt.datatypes.MqttQos;
import com.hivemq.client.mqtt.datatypes.MqttTopicFilter;
/**
* Unit test for {@link GenericMqttSubscribeFactory}.
*/
public final class GenericMqttSubscribeFactoryTest {
private static final String CONNECTION_NAME = GenericMqttSubscribeFactory.class.getSimpleName();
@Test
public void assertImmutability() {
assertInstancesOf(GenericMqttSubscribeFactory.class,
areImmutable(),
provided(Function.class).isAlsoImmutable());
}
@Test
public void getSourceSubscribeMessageForNullConnectionSourceThrowsException() {
assertThatNullPointerException()
.isThrownBy(() -> GenericMqttSubscribeFactory.getGenericSourceSubscribeMessage(null))
.withMessage("The connectionSource must not be null!")
.withNoCause();
}
@Test
public void getSourceSubscribeMessageForConnectionSourceWithoutAddressesReturnsEmptyOptional()
throws InvalidMqttTopicFilterStringException {
final var connectionSource = Mockito.mock(Source.class);
Mockito.when(connectionSource.getAddresses()).thenReturn(Collections.emptySet());
assertThat(GenericMqttSubscribeFactory.getGenericSourceSubscribeMessage(connectionSource)).isEmpty();
}
@Test
public void getSourceSubscribeMessageForConnectionSourceWithValidAddressesReturnsOptionalContainingExpected()
throws InvalidMqttTopicFilterStringException {
final var sourceAddresses =
Set.of(CONNECTION_NAME + "/foo", CONNECTION_NAME + "/bar", CONNECTION_NAME + "/baz");
final var mqttQos = MqttQos.AT_LEAST_ONCE;
final var connectionSource = Mockito.mock(Source.class);
Mockito.when(connectionSource.getAddresses()).thenReturn(sourceAddresses);
Mockito.when(connectionSource.getQos()).thenReturn(Optional.of(mqttQos.getCode()));
assertThat(GenericMqttSubscribeFactory.getGenericSourceSubscribeMessage(connectionSource))
.hasValue(GenericMqttSubscribe.of(sourceAddresses.stream()
.map(MqttTopicFilter::of)
.map(mqttTopicFilter -> GenericMqttSubscription.newInstance(mqttTopicFilter, mqttQos))
.collect(Collectors.toSet())));
}
@Test
public void getSourceSubscribeMessageForConnectionSourceWithInvalidAddressThrowsException() {
final var invalidMqttTopicFilter = "#/#";
final var sourceAddresses = new LinkedHashSet<String>();
Collections.addAll(sourceAddresses, CONNECTION_NAME + "/foo", CONNECTION_NAME + "/bar", invalidMqttTopicFilter);
final var mqttQos = MqttQos.AT_LEAST_ONCE;
final var connectionSource = Mockito.mock(Source.class);
Mockito.when(connectionSource.getAddresses()).thenReturn(sourceAddresses);
Mockito.when(connectionSource.getQos()).thenReturn(Optional.of(mqttQos.getCode()));
assertThatExceptionOfType(InvalidMqttTopicFilterStringException.class)
.isThrownBy(() -> GenericMqttSubscribeFactory.getGenericSourceSubscribeMessage(connectionSource))
.withMessage("""
Failed to instantiate MqttTopicFilter for <%s>: \
Topic filter [%s] contains misplaced wildcard characters. \
Multi level wildcard (#) must be the last character.\
""",
invalidMqttTopicFilter,
invalidMqttTopicFilter)
.withCauseInstanceOf(IllegalArgumentException.class);
}
}