/*
* Copyright 2002-2014 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.web.accept;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import org.junit.Test;
import org.springframework.http.MediaType;
import org.springframework.web.context.request.NativeWebRequest;
import static org.junit.Assert.*;
/**
* A test fixture with a test sub-class of AbstractMappingContentNegotiationStrategy.
*
* @author Rossen Stoyanchev
* @since 3.2
*/
public class MappingContentNegotiationStrategyTests {
@Test
public void resolveMediaTypes() throws Exception {
Map<String, MediaType> mapping = Collections.singletonMap("json", MediaType.APPLICATION_JSON);
TestMappingContentNegotiationStrategy strategy = new TestMappingContentNegotiationStrategy("json", mapping);
List<MediaType> mediaTypes = strategy.resolveMediaTypes(null);
assertEquals(1, mediaTypes.size());
assertEquals("application/json", mediaTypes.get(0).toString());
}
@Test
public void resolveMediaTypesNoMatch() throws Exception {
Map<String, MediaType> mapping = null;
TestMappingContentNegotiationStrategy strategy = new TestMappingContentNegotiationStrategy("blah", mapping);
List<MediaType> mediaTypes = strategy.resolveMediaTypes(null);
assertEquals(0, mediaTypes.size());
}
@Test
public void resolveMediaTypesNoKey() throws Exception {
Map<String, MediaType> mapping = Collections.singletonMap("json", MediaType.APPLICATION_JSON);
TestMappingContentNegotiationStrategy strategy = new TestMappingContentNegotiationStrategy(null, mapping);
List<MediaType> mediaTypes = strategy.resolveMediaTypes(null);
assertEquals(0, mediaTypes.size());
}
@Test
public void resolveMediaTypesHandleNoMatch() throws Exception {
Map<String, MediaType> mapping = null;
TestMappingContentNegotiationStrategy strategy = new TestMappingContentNegotiationStrategy("xml", mapping);
List<MediaType> mediaTypes = strategy.resolveMediaTypes(null);
assertEquals(1, mediaTypes.size());
assertEquals("application/xml", mediaTypes.get(0).toString());
}
private static class TestMappingContentNegotiationStrategy extends AbstractMappingContentNegotiationStrategy {
private final String extension;
public TestMappingContentNegotiationStrategy(String extension, Map<String, MediaType> mapping) {
super(mapping);
this.extension = extension;
}
@Override
protected String getMediaTypeKey(NativeWebRequest request) {
return this.extension;
}
@Override
protected MediaType handleNoMatch(NativeWebRequest request, String mappingKey) {
return "xml".equals(mappingKey) ? MediaType.APPLICATION_XML : null;
}
}
}