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RetrieveThingStrategyTest.java
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RetrieveThingStrategyTest.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.things.service.persistence.actors.strategies.commands;
import static org.assertj.core.api.Assertions.assertThat;
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 org.eclipse.ditto.base.model.headers.DittoHeaders;
import org.eclipse.ditto.base.model.json.JsonSchemaVersion;
import org.eclipse.ditto.internal.utils.persistentactors.commands.CommandStrategy;
import org.eclipse.ditto.json.JsonFactory;
import org.eclipse.ditto.json.JsonFieldSelector;
import org.eclipse.ditto.things.model.FeaturesBuilder;
import org.eclipse.ditto.things.model.TestConstants;
import org.eclipse.ditto.things.model.Thing;
import org.eclipse.ditto.things.model.ThingId;
import org.eclipse.ditto.things.model.ThingsModelFactory;
import org.eclipse.ditto.things.model.signals.commands.exceptions.ThingNotAccessibleException;
import org.eclipse.ditto.things.model.signals.commands.query.RetrieveThing;
import org.eclipse.ditto.things.model.signals.commands.query.RetrieveThingResponse;
import org.eclipse.ditto.things.service.persistence.actors.ETagTestUtils;
import org.junit.Before;
import org.junit.Test;
/**
* Unit test for {@link RetrieveThingStrategy}.
*/
public final class RetrieveThingStrategyTest extends AbstractCommandStrategyTest {
private RetrieveThingStrategy underTest;
@Before
public void setUp() {
underTest = new RetrieveThingStrategy();
}
@Test
public void assertImmutability() {
assertInstancesOf(RetrieveThingStrategy.class, areImmutable());
}
@Test
public void isNotDefinedForDeviantThingIds() {
final CommandStrategy.Context<ThingId> context = getDefaultContext();
final RetrieveThing command = RetrieveThing.of(ThingId.of("org.example", "myThing"), DittoHeaders.empty());
final boolean defined = underTest.isDefined(context, THING_V2, command);
assertThat(defined).isFalse();
}
@Test
public void isNotDefinedIfContextHasNoThing() {
final CommandStrategy.Context<ThingId> context = getDefaultContext();
final RetrieveThing command = RetrieveThing.of(context.getState(), DittoHeaders.empty());
final boolean defined = underTest.isDefined(context, null, command);
assertThat(defined).isFalse();
}
@Test
public void isDefinedIfContextHasThingAndThingIdsAreEqual() {
final CommandStrategy.Context<ThingId> context = getDefaultContext();
final RetrieveThing command = RetrieveThing.of(context.getState(), DittoHeaders.empty());
final boolean defined = underTest.isDefined(context, THING_V2, command);
assertThat(defined).isTrue();
}
@Test
public void retrieveThingFromContextIfCommandHasNoSnapshotRevisionAndNoSelectedFields() {
final CommandStrategy.Context<ThingId> context = getDefaultContext();
final RetrieveThing command = RetrieveThing.of(context.getState(), DittoHeaders.empty());
final RetrieveThingResponse expectedResponse =
ETagTestUtils.retrieveThingResponse(THING_V2, null, DittoHeaders.empty());
assertQueryResult(underTest, THING_V2, command, expectedResponse);
}
@Test
public void retrieveThingFromContextIfCommandHasNoSnapshotRevisionButSelectedFields() {
final CommandStrategy.Context<ThingId> context = getDefaultContext();
final JsonFieldSelector fieldSelector = JsonFactory.newFieldSelector("/attributes/location");
final RetrieveThing command = RetrieveThing.getBuilder(context.getState(), DittoHeaders.empty())
.withSelectedFields(fieldSelector)
.build();
final RetrieveThingResponse expectedResponse =
ETagTestUtils.retrieveThingResponse(THING_V2, fieldSelector, DittoHeaders.empty());
assertQueryResult(underTest, THING_V2, command, expectedResponse);
}
@Test
public void unhandledReturnsThingNotAccessibleException() {
final CommandStrategy.Context<ThingId> context = getDefaultContext();
final RetrieveThing command = RetrieveThing.of(context.getState(), DittoHeaders.empty());
final ThingNotAccessibleException expectedException =
new ThingNotAccessibleException(command.getEntityId(), command.getDittoHeaders());
assertUnhandledResult(underTest, THING_V2, command, expectedException);
}
@Test
public void retrieveThingWithSelectedFields() {
final CommandStrategy.Context<ThingId> context = getDefaultContext();
final JsonFieldSelector fieldSelector = JsonFactory.newFieldSelector("/attribute/location");
final DittoHeaders dittoHeaders = DittoHeaders.newBuilder()
.schemaVersion(JsonSchemaVersion.V_2)
.build();
final RetrieveThing command = RetrieveThing.getBuilder(context.getState(), dittoHeaders)
.withSelectedFields(fieldSelector)
.build();
final RetrieveThingResponse expectedResponse =
ETagTestUtils.retrieveThingResponse(THING_V2, fieldSelector, dittoHeaders);
assertQueryResult(underTest, THING_V2, command, expectedResponse);
}
@Test
public void retrieveThingWithSelectedFieldsWithFeatureWildcard() {
final CommandStrategy.Context<ThingId> context = getDefaultContext();
final JsonFieldSelector fieldSelector = JsonFactory.newFieldSelector("/attribute/location",
"/features/*/properties/target_year_1");
final DittoHeaders dittoHeaders = DittoHeaders.newBuilder()
.schemaVersion(JsonSchemaVersion.V_2)
.build();
final FeaturesBuilder featuresBuilder = ThingsModelFactory.newFeaturesBuilder();
THING_V2.getFeatures().orElseThrow().forEach(featuresBuilder::set);
featuresBuilder.set(ThingsModelFactory.newFeature("f1",
ThingsModelFactory.newFeaturePropertiesBuilder().set("target_year_1", 2022).build()));
featuresBuilder.set(ThingsModelFactory.newFeature("f2", ThingsModelFactory.newFeaturePropertiesBuilder().set(
"connected", false).build()));
final Thing thing = THING_V2.toBuilder()
.setFeatures(featuresBuilder.build())
.build();
final RetrieveThing command = RetrieveThing.getBuilder(context.getState(), dittoHeaders)
.withSelectedFields(fieldSelector)
.build();
final JsonFieldSelector expandedFieldSelector = JsonFactory.newFieldSelector("/attribute/location",
"/features/" + TestConstants.Feature.FLUX_CAPACITOR_ID + "/properties/target_year_1",
"/features/f1/properties/target_year_1",
"/features/f2/properties/target_year_1");
assertQueryResult(underTest, THING_V2, command, response -> {
assertThat(response).isInstanceOf(RetrieveThingResponse.class);
final RetrieveThingResponse retrieveThingResponse = (RetrieveThingResponse) response;
assertThat(retrieveThingResponse.getEntity()).isEqualTo(thing.toJson(expandedFieldSelector));
});
}
}