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ImmutableHeadersPlaceholderTest.java
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ImmutableHeadersPlaceholderTest.java
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/*
* Copyright (c) 2021 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.placeholders;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
import java.util.HashMap;
import java.util.Map;
import org.junit.BeforeClass;
import org.junit.Ignore;
import org.junit.Test;
import org.mutabilitydetector.unittesting.MutabilityAssert;
import org.mutabilitydetector.unittesting.MutabilityMatchers;
import nl.jqno.equalsverifier.EqualsVerifier;
import nl.jqno.equalsverifier.Warning;
/**
* Tests {@link ImmutableHeadersPlaceholder}.
*/
public class ImmutableHeadersPlaceholderTest {
private static final ImmutableHeadersPlaceholder UNDER_TEST = ImmutableHeadersPlaceholder.INSTANCE;
private static final Map<String, String> HEADERS = new HashMap<>();
private static final String DEVICE_ID = "eclipse:ditto:device1234";
@BeforeClass
public static void setUp() {
HEADERS.put("device_id", DEVICE_ID);
HEADERS.put("correlation_id", "4205833931151659498");
}
/**
* Assert immutability.
*/
@Test
public void assertImmutability() {
MutabilityAssert.assertInstancesOf(ImmutableHeadersPlaceholder.class, MutabilityMatchers.areImmutable());
}
/**
* Test hash code and equals.
*/
@Test
public void testHashCodeAndEquals() {
EqualsVerifier.forClass(ImmutableHeadersPlaceholder.class)
.suppress(Warning.INHERITED_DIRECTLY_FROM_OBJECT)
.usingGetClass()
.verify();
}
@Test
public void testReplaceDeviceIdHeader() {
assertThat(UNDER_TEST.resolve(HEADERS, "device_id")).contains(DEVICE_ID);
}
@Test
public void testUnresolvableHeaderReturnsEmpty() {
assertThat(UNDER_TEST.resolve(HEADERS, "thing_id")).isEmpty();
}
@Test
public void testResolvingWithNull() {
assertThatExceptionOfType(NullPointerException.class).isThrownBy(() -> UNDER_TEST.resolve(HEADERS, null));
}
@Test
public void testResolvingWithEmptyString() {
assertThatExceptionOfType(IllegalArgumentException.class).isThrownBy(() -> UNDER_TEST.resolve(HEADERS, ""));
}
}