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ShutdownTest.java
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ShutdownTest.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.base.api.common;
import static org.assertj.core.api.Assertions.assertThat;
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.UUID;
import org.eclipse.ditto.base.model.headers.DittoHeaders;
import org.eclipse.ditto.base.model.signals.commands.Command;
import org.eclipse.ditto.json.JsonFactory;
import org.eclipse.ditto.json.JsonObject;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import nl.jqno.equalsverifier.EqualsVerifier;
/**
* Unit test for {@link Shutdown}.
*/
public final class ShutdownTest {
private static ShutdownReason knownShutdownReason;
private static DittoHeaders dittoHeaders;
private static JsonObject knownJsonRepresentation;
private Shutdown underTest;
@BeforeClass
public static void initTestConstants() {
knownShutdownReason = ShutdownReasonFactory.getPurgeNamespaceReason("com.example.test");
dittoHeaders = DittoHeaders.newBuilder()
.correlationId(String.valueOf(UUID.randomUUID()))
.build();
knownJsonRepresentation = JsonFactory.newObjectBuilder()
.set(Shutdown.JsonFields.TYPE, Shutdown.TYPE)
.set(Shutdown.JsonFields.REASON, knownShutdownReason.toJson())
.build();
}
@Before
public void setUp() {
underTest = Shutdown.getInstance(knownShutdownReason, dittoHeaders);
}
@Test
public void assertImmutability() {
assertInstancesOf(Shutdown.class, areImmutable(), provided(ShutdownReason.class).isAlsoImmutable());
}
@Test
public void testHashCodeAndEquals() {
EqualsVerifier.forClass(Shutdown.class)
.usingGetClass()
.withRedefinedSuperclass()
.verify();
}
@Test
public void tryToGetInstanceWithNullReason() {
assertThatNullPointerException()
.isThrownBy(() -> Shutdown.getInstance(null, dittoHeaders))
.withMessageContaining("ShutdownReason")
.withMessageContaining("must not be null")
.withNoCause();
}
@Test
public void getReasonReturnsExpected() {
assertThat(underTest.getReason()).isEqualTo(knownShutdownReason);
}
@Test
public void getCategoryReturnsModify() {
assertThat(underTest.getCategory()).isEqualTo(Command.Category.MODIFY);
}
@Test
public void getTypeReturnsExpected() {
assertThat(underTest.getType()).isEqualTo(Shutdown.TYPE);
}
@Test
public void getDittoHeadersReturnsExpected() {
assertThat(underTest.getDittoHeaders()).isEqualTo(dittoHeaders);
}
@Test
public void getResourceTypeReturnsCommonCommandResourceType() {
assertThat(underTest.getResourceType()).isEqualTo(CommonCommand.RESOURCE_TYPE);
}
@Test
public void fromJsonWorksAsExpected() {
assertThat(Shutdown.fromJson(knownJsonRepresentation, dittoHeaders)).isEqualTo(underTest);
}
@Test
public void fromJsonWithoutReason() {
final JsonObject knownJsonWithoutReason = knownJsonRepresentation.toBuilder()
.remove(Shutdown.JsonFields.REASON)
.build();
final Shutdown shutdown = Shutdown.fromJson(knownJsonWithoutReason, dittoHeaders);
assertThat(shutdown.getReason()).isEqualTo(ShutdownNoReason.INSTANCE);
}
@Test
public void toJsonWithoutSchemaVersionAndPredicateReturnsExpected() {
assertThat(underTest.toJson()).isEqualTo(knownJsonRepresentation);
}
@Test
public void toJsonWithoutReason() {
final Shutdown shutdown = Shutdown.getInstance(ShutdownNoReason.INSTANCE, dittoHeaders);
final JsonObject expectedJson = knownJsonRepresentation.toBuilder()
.remove(Shutdown.JsonFields.REASON)
.build();
assertThat(shutdown.toJson()).isEqualTo(expectedJson);
}
@Test
public void toStringContainsExpected() {
assertThat(underTest.toString())
.contains(underTest.getClass().getSimpleName())
.contains(underTest.getType())
.contains(underTest.getDittoHeaders().toString())
.contains(underTest.getCategory().toString())
.contains(knownShutdownReason.toString());
}
}