NamespaceTest.java
/*******************************************************************************
* Copyright (c) 2020 Eclipse RDF4J contributors.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Distribution License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*******************************************************************************/
package org.eclipse.rdf4j.model;
import static org.assertj.core.api.Assertions.assertThat;
import java.util.Objects;
import org.junit.jupiter.api.Test;
/**
* Abstract {@link Namespace} test suite.
*
* @author Alessandro Bollini
* @since 3.5.0
*/
public abstract class NamespaceTest {
/**
* Creates a test namespace instance.
*
* @param prefix the prefix of the namespace
* @param name the name IRI of the namespace
* @return a new instance of the concrete namespace class under test
*/
protected abstract Namespace namespace(String prefix, String name);
@Test
public void compareTo() {
final Namespace x = namespace("com", "http://example.org/x");
final Namespace y = namespace("org", "http://example.org/y");
final Namespace z = namespace("org", "http://example.org/z");
assertThat(x).isEqualByComparingTo(x);
assertThat(x).as("nulls first").isGreaterThan(null);
assertThat(x).as("less by prefix").isLessThan(y);
assertThat(y).as("greater by prefix").isGreaterThan(x);
assertThat(y).as("less by name").isLessThan(z);
assertThat(z).as("greater by name").isGreaterThan(y);
}
@Test
public void testEquals() {
final Namespace x = namespace("com", "http://example.org/x");
final Namespace y = namespace("org", "http://example.org/y");
assertThat(x).as("same object").isEqualTo(x);
assertThat(x).as("same class").isEqualTo(namespace(x.getPrefix(), x.getName()));
assertThat(x).isNotEqualTo(null);
assertThat(x).isNotEqualTo(new Object());
assertThat(x).isNotEqualTo(y);
}
@Test
public void testHashCode() {
final Namespace namespace = namespace("com", "http://example.org/x");
assertThat(namespace.hashCode())
.as("computed according to contract")
.isEqualTo(Objects.hash(namespace.getPrefix(), namespace.getName()));
}
}