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DefaultMessageMapperFactoryTest.java
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DefaultMessageMapperFactoryTest.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.connectivity.service.mapping;
import static org.assertj.core.api.Assertions.assertThat;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.ditto.connectivity.model.ConnectivityModelFactory;
import org.eclipse.ditto.connectivity.model.MappingContext;
import org.eclipse.ditto.connectivity.service.mapping.test.MappingContexts;
import org.eclipse.ditto.connectivity.service.mapping.test.MockMapper;
import org.eclipse.ditto.connectivity.service.messaging.TestConstants;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.junit.MockitoJUnitRunner;
import com.typesafe.config.Config;
import com.typesafe.config.ConfigFactory;
import org.apache.pekko.actor.ActorSystem;
import org.apache.pekko.event.DiagnosticLoggingAdapter;
import org.apache.pekko.testkit.javadsl.TestKit;
/**
* Unit test for {@link DefaultMessageMapperFactory}.
*/
@RunWith(MockitoJUnitRunner.class)
public final class DefaultMessageMapperFactoryTest {
private static ActorSystem system;
@Mock
private DiagnosticLoggingAdapter log;
private DefaultMessageMapperFactory underTest;
@BeforeClass
public static void initTestFixture() {
final Config testConfig = ConfigFactory.parseMap(
Collections.singletonMap("ditto.connectivity.mapping.dummy", ""))
.withFallback(ConfigFactory.load("test"));
system = ActorSystem.create("test", testConfig);
}
@AfterClass
public static void shutDownActorSystem() {
TestKit.shutdownActorSystem(system);
system = null;
}
@Before
public void setUp() {
underTest = DefaultMessageMapperFactory.of(TestConstants.createConnection(), TestConstants.CONNECTIVITY_CONFIG,
system, log);
}
@After
public void tearDown() {
underTest = null;
}
@Test
public void loadMapperFromFactoryMethod() {
final Map<String, String> options = new HashMap<>();
// add this to pass configuration checks
options.put(MockMapper.OPT_IS_VALID, String.valueOf(true));
// looking for a method containing 'test' and returning a MessageMapper in Mappers.class
final MappingContext ctx = MappingContexts.mock(MockMapper.ALIAS, options);
assertThat(underTest.mapperOf("test", ctx)).isPresent();
}
@Test
public void loadMapperFromClass() {
final MappingContext ctx = MappingContexts.mock(true);
assertThat(underTest.mapperOf(MockMapper.class.getName(), ctx)).isPresent();
}
@Test
public void loadMapperWitInvalidOptions() {
final MappingContext ctx = MappingContexts.mock(false);
assertThat(underTest.mapperOf("test", ctx)).isEmpty();
}
@Test
public void loadMissingMapper() {
final MappingContext ctx = MappingContexts.mock("missing-mapper", Collections.emptyMap());
assertThat(underTest.mapperOf("missing-mapper-id", ctx)).isEmpty();
}
@Test
public void loadNonMessageMapperClass() {
final MappingContext ctx = MappingContexts.mock(String.class.getCanonicalName(),
Collections.emptyMap());
assertThat(underTest.mapperOf("some-id", ctx)).isEmpty();
}
@Test
public void createWithAlias() {
// looking for a mapper alias 'test' and returning a MessageMapper in Mappers.class
assertThat(underTest.createMessageMapperInstance(MockMapper.ALIAS)).isPresent();
}
@Test
public void createWithUnknownAliasFindsNoMapper() {
assertThat(underTest.createMessageMapperInstance("strong-smell-wasabi")).isEmpty();
}
@Test
public void createWithClassNameFailsForNonMapperClass() {
assertThat(underTest.createMessageMapperInstance(String.class.getCanonicalName())).isEmpty();
}
@Test
public void loadMapperWithInvalidConfig() {
final MappingContext ctx = MappingContexts.mock(false);
assertThat(underTest.mapperOf("test", ctx)).isEmpty();
}
@Test
public void loadMapperWithoutContentType() {
final Map<String, String> opts = new HashMap<>();
final MappingContext ctx =
ConnectivityModelFactory.newMappingContext(MockMapper.class.getCanonicalName(), opts);
assertThat(underTest.mapperOf("test", ctx)).isEmpty();
}
@Test
public void loadFallbackMappersByAlias() {
final MessageMapperRegistry registry = underTest.registryOf(DittoMessageMapper.CONTEXT,
ConnectivityModelFactory.emptyPayloadMappingDefinition());
final List<MessageMapper> dittoMappers =
registry.getMappers(ConnectivityModelFactory.newPayloadMapping("Ditto"));
assertThat(dittoMappers).hasSize(1);
final MessageMapper dittoMapper = dittoMappers.get(0);
assertThat(dittoMapper).isInstanceOf(WrappingMessageMapper.class);
assertThat(dittoMapper.getId()).isEqualTo("Ditto");
assertThat(((WrappingMessageMapper) dittoMapper).getDelegate()).isInstanceOf(DittoMessageMapper.class);
}
@Test
public void loadRegistry() {
final MappingContext fooCtx = MappingContexts.mock(true);
final MessageMapperRegistry underTest = this.underTest.registryOf(DittoMessageMapper.CONTEXT,
ConnectivityModelFactory.newPayloadMappingDefinition("foo", fooCtx));
final MessageMapper fooMapper = underTest.getMappers(ConnectivityModelFactory.newPayloadMapping("foo")).get(0);
final MessageMapper defaultMapper = underTest.getDefaultMapper();
assertThat(fooMapper).isInstanceOf(WrappingMessageMapper.class);
assertThat(((WrappingMessageMapper) fooMapper).getDelegate()).isInstanceOf(MockMapper.class);
assertThat(defaultMapper).isInstanceOf(WrappingMessageMapper.class);
assertThat(((WrappingMessageMapper) defaultMapper).getDelegate()).isInstanceOf(DittoMessageMapper.class);
}
}