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/*
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* Copyright 2014-2015 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.restdocs.core;
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import static org.junit.Assert.assertEquals;
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import java.io.File;
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import java.io.FileReader;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.junit.runners.Parameterized;
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import org.junit.runners.Parameterized.Parameters;
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import org.springframework.mock.web.MockHttpServletResponse;
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import org.springframework.util.FileCopyUtils;
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/**
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* Tests for {@link LinkExtractors}.
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*
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* @author Andy Wilkinson
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*/
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@RunWith(Parameterized.class)
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public class LinkExtractorsTests {
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private final LinkExtractor linkExtractor;
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private final String linkType;
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@Parameters
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public static Collection<Object[]> data() {
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return Arrays.asList(new Object[] { LinkExtractors.halLinks(), "hal" },
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new Object[] { LinkExtractors.atomLinks(), "atom" });
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}
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public LinkExtractorsTests(LinkExtractor linkExtractor, String linkType) {
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this.linkExtractor = linkExtractor;
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this.linkType = linkType;
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}
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@Test
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public void singleLink() throws IOException {
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Map<String, List<Link>> links = this.linkExtractor
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.extractLinks(createResponse("single-link"));
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assertLinks(Arrays.asList(new Link("alpha", "http://alpha.example.com")), links);
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}
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@Test
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public void multipleLinksWithDifferentRels() throws IOException {
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Map<String, List<Link>> links = this.linkExtractor
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.extractLinks(createResponse("multiple-links-different-rels"));
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assertLinks(Arrays.asList(new Link("alpha", "http://alpha.example.com"),
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new Link("bravo", "http://bravo.example.com")), links);
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}
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@Test
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public void multipleLinksWithSameRels() throws IOException {
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Map<String, List<Link>> links = this.linkExtractor
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.extractLinks(createResponse("multiple-links-same-rels"));
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assertLinks(Arrays.asList(new Link("alpha", "http://alpha.example.com/one"),
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new Link("alpha", "http://alpha.example.com/two")), links);
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}
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@Test
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public void noLinks() throws IOException {
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Map<String, List<Link>> links = this.linkExtractor
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.extractLinks(createResponse("no-links"));
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assertLinks(Collections.<Link> emptyList(), links);
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}
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@Test
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public void linksInTheWrongFormat() throws IOException {
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Map<String, List<Link>> links = this.linkExtractor
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.extractLinks(createResponse("wrong-format"));
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assertLinks(Collections.<Link> emptyList(), links);
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}
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private void assertLinks(List<Link> expectedLinks, Map<String, List<Link>> actualLinks) {
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Map<String, List<Link>> expectedLinksByRel = new HashMap<>();
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for (Link expectedLink : expectedLinks) {
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List<Link> expectedlinksWithRel = expectedLinksByRel.get(expectedLink
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.getRel());
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if (expectedlinksWithRel == null) {
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expectedlinksWithRel = new ArrayList<>();
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expectedLinksByRel.put(expectedLink.getRel(), expectedlinksWithRel);
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}
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expectedlinksWithRel.add(expectedLink);
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}
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assertEquals(expectedLinksByRel, actualLinks);
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}
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private MockHttpServletResponse createResponse(String contentName) throws IOException {
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MockHttpServletResponse response = new MockHttpServletResponse();
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FileCopyUtils.copy(new FileReader(getPayloadFile(contentName)),
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response.getWriter());
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return response;
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}
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private File getPayloadFile(String name) {
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return new File("src/test/resources/link-payloads/" + this.linkType + "/" + name
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+ ".json");
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}
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}
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Andy Wilkinson