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ReceiveMaximumTest.java
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ReceiveMaximumTest.java
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/*
* Copyright (c) 2022 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.connectivity.service.config.mqtt;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mutabilitydetector.unittesting.MutabilityAssert.assertInstancesOf;
import static org.mutabilitydetector.unittesting.MutabilityMatchers.areImmutable;
import org.assertj.core.api.Assertions;
import org.junit.Test;
import nl.jqno.equalsverifier.EqualsVerifier;
/**
* Unit test for {@link ReceiveMaximum}.
*/
public final class ReceiveMaximumTest {
@Test
public void assertImmutability() {
assertInstancesOf(ReceiveMaximum.class, areImmutable());
}
@Test
public void testHashCodeAndEquals() {
EqualsVerifier.forClass(ReceiveMaximum.class)
.usingGetClass()
.verify();
}
@Test
public void testCompareTo() throws IllegalReceiveMaximumValueException {
final var minimumReceiveMaximum = ReceiveMaximum.of(1);
final var defaultReceiveMaximum = ReceiveMaximum.defaultReceiveMaximum();
assertThat(minimumReceiveMaximum).isLessThan(defaultReceiveMaximum);
assertThat(defaultReceiveMaximum).isGreaterThan(minimumReceiveMaximum);
}
@Test
public void ofWithZeroThrowsException() {
final var value = 0;
Assertions.assertThatExceptionOfType(IllegalReceiveMaximumValueException.class)
.isThrownBy(() -> ReceiveMaximum.of(value))
.withMessage("Expected value to be within [%d, %d] but it was <%d>.",
ReceiveMaximum.MIN_VALUE,
ReceiveMaximum.MAX_VALUE,
value)
.withNoCause();
}
@Test
public void ofWithValueExceedingMaximumThrowsException() {
final var value = ReceiveMaximum.MAX_VALUE + 1;
Assertions.assertThatExceptionOfType(IllegalReceiveMaximumValueException.class)
.isThrownBy(() -> ReceiveMaximum.of(value))
.withMessage("Expected value to be within [%d, %d] but it was <%d>.",
ReceiveMaximum.MIN_VALUE,
ReceiveMaximum.MAX_VALUE,
value)
.withNoCause();
}
@Test
public void getValueReturnsExpectedValue() throws IllegalReceiveMaximumValueException {
final var value = 42;
final var underTest = ReceiveMaximum.of(value);
assertThat(underTest.getValue()).isEqualTo(value);
}
}