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ThingMergedStrategyTest.java
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ThingMergedStrategyTest.java
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/*
* Copyright (c) 2021 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.things.service.persistence.actors.strategies.events;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mutabilitydetector.unittesting.MutabilityAssert.assertInstancesOf;
import static org.mutabilitydetector.unittesting.MutabilityMatchers.areImmutable;
import java.time.Instant;
import org.eclipse.ditto.json.JsonPointer;
import org.eclipse.ditto.base.model.entity.metadata.Metadata;
import org.eclipse.ditto.base.model.headers.DittoHeaders;
import org.eclipse.ditto.things.model.Thing;
import org.eclipse.ditto.things.model.ThingLifecycle;
import org.eclipse.ditto.things.model.ThingsModelFactory;
import org.eclipse.ditto.things.model.signals.commands.TestConstants;
import org.eclipse.ditto.things.model.signals.events.ThingMerged;
import org.junit.Ignore;
import org.junit.Test;
/**
* Unit test for {@link ThingMergedStrategy}.
*/
public final class ThingMergedStrategyTest extends AbstractStrategyTest {
private static final Instant TIMESTAMP = Instant.now();
private static final String METADATA_KEY = "description";
private static final String METADATA_VALUE = "description of the location";
private static final Metadata METADATA = Metadata.newBuilder().set(METADATA_KEY, METADATA_VALUE).build();
private static final Metadata EXPECTED_METADATA = Metadata.newBuilder()
.set(TestConstants.Thing.ABSOLUTE_LOCATION_ATTRIBUTE_POINTER.append(JsonPointer.of(METADATA_KEY)),
METADATA_VALUE)
.build();
@Test
public void assertImmutability() {
assertInstancesOf(ThingMergedStrategy.class, areImmutable());
}
@Test
public void appliesEventCorrectly() {
final ThingMergedStrategy strategy = new ThingMergedStrategy();
final ThingMerged event = ThingMerged.of(THING.getEntityId().orElseThrow(),
TestConstants.Thing.ABSOLUTE_LOCATION_ATTRIBUTE_POINTER,
TestConstants.Thing.LOCATION_ATTRIBUTE_VALUE, REVISION, TIMESTAMP, DittoHeaders.empty(), METADATA);
final Thing thingWithMergeApplied = strategy.handle(event, THING, NEXT_REVISION);
final Thing expected = ThingsModelFactory.newThingBuilder()
.setAttribute(TestConstants.Thing.LOCATION_ATTRIBUTE_POINTER,
TestConstants.Thing.LOCATION_ATTRIBUTE_VALUE)
.setId(THING_ID)
.setLifecycle(ThingLifecycle.ACTIVE)
.setRevision(NEXT_REVISION)
.setMetadata(METADATA)
.setModified(TIMESTAMP)
.setMetadata(EXPECTED_METADATA)
.build();
assertThat(thingWithMergeApplied).isEqualTo(expected);
}
@Test
public void replacesPreviousMetadata() {
final ThingMergedStrategy strategy = new ThingMergedStrategy();
final ThingMerged event = ThingMerged.of(THING.getEntityId().orElseThrow(),
TestConstants.Thing.ABSOLUTE_LOCATION_ATTRIBUTE_POINTER,
TestConstants.Thing.LOCATION_ATTRIBUTE_VALUE, REVISION, TIMESTAMP, DittoHeaders.empty(), METADATA);
final Metadata previousMetadata = Metadata.newBuilder()
.set(TestConstants.Thing.ABSOLUTE_LOCATION_ATTRIBUTE_POINTER.append(JsonPointer.of(METADATA_KEY)),
"description")
.build();
final Thing thingWithMergeApplied =
strategy.handle(event, THING.toBuilder().setMetadata(previousMetadata).build(), NEXT_REVISION);
final Thing expected = ThingsModelFactory.newThingBuilder()
.setAttribute(TestConstants.Thing.LOCATION_ATTRIBUTE_POINTER,
TestConstants.Thing.LOCATION_ATTRIBUTE_VALUE)
.setId(THING_ID)
.setLifecycle(ThingLifecycle.ACTIVE)
.setRevision(NEXT_REVISION)
.setMetadata(METADATA)
.setModified(TIMESTAMP)
.setMetadata(EXPECTED_METADATA)
.build();
assertThat(thingWithMergeApplied).isEqualTo(expected);
}
}