Files
spring-hateoas/src/test/java/org/springframework/hateoas/LinksUnitTest.java
Oliver Gierke d9c53b5eeb #653 - Polishing.
Expose nullability in Identifiable, ResourceSupport and Links via Optional.
2017-10-16 17:58:55 +02:00

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3.1 KiB
Java
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/*
* Copyright 2013-2017 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.hateoas;
import static org.assertj.core.api.Assertions.*;
import java.util.Arrays;
import java.util.Optional;
import org.junit.Test;
import org.springframework.util.StringUtils;
/**
* Unit test for {@link Links}.
*
* @author Oliver Gierke
* @author Greg Turnquist
*/
public class LinksUnitTest {
static final String FIRST = "</something>;rel=\"foo\"";
static final String SECOND = "</somethingElse>;rel=\"bar\"";
static final String WITH_COMMA = "<http://localhost:8080/test?page=0&filter=foo,bar>;rel=\"foo\"";
static final String LINKS = StringUtils.collectionToCommaDelimitedString(Arrays.asList(FIRST, SECOND));
static final String THIRD = "</something>;rel=\"foo\";hreflang=\"en\"";
static final String FOURTH = "</somethingElse>;rel=\"bar\";hreflang=\"de\"";
static final String LINKS2 = StringUtils.collectionToCommaDelimitedString(Arrays.asList(THIRD, FOURTH));
static final Links reference = new Links(new Link("/something", "foo"), new Link("/somethingElse", "bar"));
static final Links reference2 = new Links(new Link("/something", "foo").withHreflang("en"),
new Link("/somethingElse", "bar").withHreflang("de"));
@Test
public void parsesLinkHeaderLinks() {
assertThat(Links.valueOf(LINKS)).isEqualTo(reference);
assertThat(Links.valueOf(LINKS2)).isEqualTo(reference2);
assertThat(reference.toString()).isEqualTo(LINKS);
assertThat(reference2.toString()).isEqualTo(LINKS2);
}
@Test
public void skipsEmptyLinkElements() {
assertThat(Links.valueOf(LINKS + ",,,")).isEqualTo(reference);
assertThat(Links.valueOf(LINKS2 + ",,,")).isEqualTo(reference2);
}
@Test
public void returnsNullForNullOrEmptySource() {
assertThat(Links.valueOf(null)).isEqualTo(Links.NO_LINKS);
assertThat(Links.valueOf("")).isEqualTo(Links.NO_LINKS);
}
/**
* @see #54
* @see #100
*/
@Test
public void getSingleLinkByRel() {
assertThat(reference.getLink("bar")).hasValue(new Link("/somethingElse", "bar"));
assertThat(reference2.getLink("bar")).hasValue(new Link("/somethingElse", "bar").withHreflang("de"));
}
/**
* @see #440
*/
@Test
public void parsesLinkWithComma() {
Link withComma = new Link("http://localhost:8080/test?page=0&filter=foo,bar", "foo");
assertThat(Links.valueOf(WITH_COMMA).getLink("foo")).isEqualTo(Optional.of(withComma));
Links twoWithCommaInFirst = Links.valueOf(WITH_COMMA.concat(",").concat(SECOND));
assertThat(twoWithCommaInFirst.getLink("foo")).hasValue(withComma);
assertThat(twoWithCommaInFirst.getLink("bar")).hasValue(new Link("/somethingElse", "bar"));
}
}