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DittoMessageSubjectValueValidatorTest.java
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DittoMessageSubjectValueValidatorTest.java
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/*
* Copyright (c) 2020 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.messages.model;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatCode;
import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
import static org.assertj.core.api.Assertions.assertThatNullPointerException;
import static org.mutabilitydetector.unittesting.MutabilityAssert.assertInstancesOf;
import static org.mutabilitydetector.unittesting.MutabilityMatchers.areImmutable;
import org.eclipse.ditto.base.model.exceptions.DittoHeaderInvalidException;
import org.eclipse.ditto.base.model.headers.DittoHeaderDefinition;
import org.eclipse.ditto.base.model.headers.HeaderDefinition;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Ignore;
import org.junit.Test;
/**
* Unit test for {@link DittoMessageSubjectValueValidator}.
*/
public final class DittoMessageSubjectValueValidatorTest {
private static CharSequence validDittoMessageSubjectString;
private DittoMessageSubjectValueValidator underTest;
@BeforeClass
public static void setUpClass() {
validDittoMessageSubjectString = KnownMessageSubjects.CLAIM_SUBJECT;
}
@Before
public void setUp() {
underTest = DittoMessageSubjectValueValidator.getInstance();
}
@Test
@Ignore("https://github.com/MutabilityDetector/MutabilityDetector/issues/185")
public void assertImmutability() {
assertInstancesOf(DittoMessageSubjectValueValidator.class, areImmutable());
}
@Test
public void tryToAcceptNullDefinition() {
assertThatNullPointerException()
.isThrownBy(() -> underTest.accept(null, validDittoMessageSubjectString))
.withMessage("The definition must not be null!")
.withNoCause();
}
@Test
public void tryToAcceptNullValue() {
final HeaderDefinition headerDefinition = MessageHeaderDefinition.SUBJECT;
assertThatExceptionOfType(DittoHeaderInvalidException.class)
.isThrownBy(() -> underTest.accept(headerDefinition, null))
.withMessageContaining("null")
.withMessageContaining(headerDefinition.getKey())
.withMessageEndingWith("is not a valid String.")
.withNoCause();
}
@Test
public void canValidateDittoMessageSubject() {
assertThat(underTest.canValidate(String.class)).isTrue();
}
@Test
public void acceptValidCharSequence() {
assertThatCode(() -> underTest.accept(MessageHeaderDefinition.SUBJECT, validDittoMessageSubjectString))
.doesNotThrowAnyException();
}
@Test
public void doesNotValidateAsDefinedJavaTypeIsNotDittoMessageSubject() {
assertThatCode(() -> underTest.accept(DittoHeaderDefinition.RESPONSE_REQUIRED, validDittoMessageSubjectString))
.doesNotThrowAnyException();
}
@Test
public void acceptNonDittoMessageSubjectString() {
final String invalidDittoMessageSubjectString = "§foo";
assertThatExceptionOfType(DittoHeaderInvalidException.class)
.isThrownBy(() -> underTest.accept(MessageHeaderDefinition.SUBJECT, invalidDittoMessageSubjectString))
.withMessageContaining(invalidDittoMessageSubjectString)
.withMessageEndingWith("is not a valid message subject.")
.withNoCause();
}
}