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MergeThingStrategyTest.java
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MergeThingStrategyTest.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.commands;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
import static org.eclipse.ditto.things.model.TestConstants.Thing.THING_V2;
import static org.mutabilitydetector.unittesting.MutabilityAssert.assertInstancesOf;
import static org.mutabilitydetector.unittesting.MutabilityMatchers.areImmutable;
import java.util.UUID;
import org.eclipse.ditto.json.JsonObject;
import org.eclipse.ditto.json.JsonPointer;
import org.eclipse.ditto.json.JsonValue;
import org.eclipse.ditto.base.model.headers.DittoHeaders;
import org.eclipse.ditto.things.model.Thing;
import org.eclipse.ditto.things.model.ThingId;
import org.eclipse.ditto.things.model.ThingTooLargeException;
import org.eclipse.ditto.things.model.ThingsModelFactory;
import org.eclipse.ditto.internal.utils.persistentactors.commands.CommandStrategy;
import org.eclipse.ditto.things.model.signals.commands.modify.MergeThing;
import org.eclipse.ditto.things.model.signals.commands.modify.MergeThingResponse;
import org.eclipse.ditto.things.model.signals.events.ThingMerged;
import org.eclipse.ditto.things.service.persistence.actors.ETagTestUtils;
import org.junit.Before;
import org.junit.Ignore;
import org.junit.Test;
/**
* Unit test for {@link MergeThingStrategy}.
*/
public final class MergeThingStrategyTest extends AbstractCommandStrategyTest {
private MergeThingStrategy underTest;
@Before
public void setUp() {
underTest = new MergeThingStrategy();
}
@Test
@Ignore("https://github.com/MutabilityDetector/MutabilityDetector/issues/185")
public void assertImmutability() {
assertInstancesOf(MergeThingStrategy.class, areImmutable());
}
@Test
public void mergeThing() {
final CommandStrategy.Context<ThingId> context = getDefaultContext();
final ThingId thingId = context.getState();
final Thing existing = THING_V2.toBuilder().setRevision(NEXT_REVISION - 1).build();
final Thing thingToMerge = ThingsModelFactory.newThingBuilder()
.setId(thingId)
.setAttribute(JsonPointer.of("newAttribute"), JsonValue.of("attributeValue"))
.setFeature("newFeature",
ThingsModelFactory.newFeaturePropertiesBuilder().set("newIntProperty", 123).build())
.build();
final JsonPointer path = JsonPointer.of("/");
final JsonObject thingJson = thingToMerge.toJson();
final MergeThing mergeThing = MergeThing.of(thingId, path, thingJson, DittoHeaders.empty());
final MergeThingResponse expectedCommandResponse =
ETagTestUtils.mergeThingResponse(existing, path, mergeThing.getDittoHeaders());
assertModificationResult(underTest, existing, mergeThing, ThingMerged.class, expectedCommandResponse);
}
@Test
public void mergeThingWithLargeAttributeExpectThingTooLargeException() {
final CommandStrategy.Context<ThingId> context = getDefaultContext();
final ThingId thingId = context.getState();
final Thing existing = THING_V2.toBuilder().setRevision(NEXT_REVISION - 1).build();
final JsonPointer path = Thing.JsonFields.ATTRIBUTES.getPointer().append(JsonPointer.of("large"));
final DittoHeaders dittoHeaders = DittoHeaders.newBuilder().correlationId(UUID.randomUUID().toString()).build();
final MergeThing mergeThing = MergeThing.withAttribute(thingId, path,
JsonValue.of("~".repeat((int) THING_SIZE_LIMIT_BYTES - 150)), dittoHeaders);
assertThatExceptionOfType(ThingTooLargeException.class)
.isThrownBy(() -> underTest.apply(context, existing, NEXT_REVISION, mergeThing))
.satisfies(e -> assertThat(e.getDittoHeaders()).containsAllEntriesOf(dittoHeaders));
}
}