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RssChannelHttpMessageConverterTests.java
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RssChannelHttpMessageConverterTests.java
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/*
* Copyright 2002-2019 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
*
* https://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.http.converter.feed;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;
import com.rometools.rome.feed.rss.Channel;
import com.rometools.rome.feed.rss.Item;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.springframework.http.MediaType;
import org.springframework.http.MockHttpInputMessage;
import org.springframework.http.MockHttpOutputMessage;
import org.springframework.tests.XmlContent;
import static java.util.Collections.singletonMap;
import static org.assertj.core.api.Assertions.assertThat;
/**
* @author Arjen Poutsma
*/
public class RssChannelHttpMessageConverterTests {
private static final MediaType RSS_XML_UTF8 =
new MediaType(MediaType.APPLICATION_RSS_XML, StandardCharsets.UTF_8);
private RssChannelHttpMessageConverter converter;
@BeforeEach
public void setUp() {
converter = new RssChannelHttpMessageConverter();
}
@Test
public void canReadAndWrite() {
assertThat(converter.canRead(Channel.class, MediaType.APPLICATION_RSS_XML)).isTrue();
assertThat(converter.canRead(Channel.class, RSS_XML_UTF8)).isTrue();
assertThat(converter.canWrite(Channel.class, MediaType.APPLICATION_RSS_XML)).isTrue();
assertThat(converter.canWrite(Channel.class, RSS_XML_UTF8)).isTrue();
}
@Test
public void read() throws IOException {
InputStream is = getClass().getResourceAsStream("rss.xml");
MockHttpInputMessage inputMessage = new MockHttpInputMessage(is);
inputMessage.getHeaders().setContentType(RSS_XML_UTF8);
Channel result = converter.read(Channel.class, inputMessage);
assertThat(result.getTitle()).isEqualTo("title");
assertThat(result.getLink()).isEqualTo("https://example.com");
assertThat(result.getDescription()).isEqualTo("description");
List<?> items = result.getItems();
assertThat(items.size()).isEqualTo(2);
Item item1 = (Item) items.get(0);
assertThat(item1.getTitle()).isEqualTo("title1");
Item item2 = (Item) items.get(1);
assertThat(item2.getTitle()).isEqualTo("title2");
}
@Test
public void write() throws IOException {
Channel channel = new Channel("rss_2.0");
channel.setTitle("title");
channel.setLink("https://example.com");
channel.setDescription("description");
Item item1 = new Item();
item1.setTitle("title1");
Item item2 = new Item();
item2.setTitle("title2");
List<Item> items = new ArrayList<>(2);
items.add(item1);
items.add(item2);
channel.setItems(items);
MockHttpOutputMessage outputMessage = new MockHttpOutputMessage();
converter.write(channel, null, outputMessage);
assertThat(outputMessage.getHeaders().getContentType())
.as("Invalid content-type")
.isEqualTo(RSS_XML_UTF8);
String expected = "<rss version=\"2.0\">" +
"<channel><title>title</title><link>https://example.com</link><description>description</description>" +
"<item><title>title1</title></item>" +
"<item><title>title2</title></item>" +
"</channel></rss>";
assertThat(XmlContent.of(outputMessage.getBodyAsString(StandardCharsets.UTF_8)))
.isSimilarToIgnoringWhitespace(expected);
}
@Test
public void writeOtherCharset() throws IOException {
Channel channel = new Channel("rss_2.0");
channel.setTitle("title");
channel.setLink("https://example.com");
channel.setDescription("description");
String encoding = "ISO-8859-1";
channel.setEncoding(encoding);
Item item1 = new Item();
item1.setTitle("title1");
MockHttpOutputMessage outputMessage = new MockHttpOutputMessage();
converter.write(channel, null, outputMessage);
assertThat(outputMessage.getHeaders().getContentType())
.as("Invalid content-type")
.isEqualTo(new MediaType("application", "rss+xml", Charset.forName(encoding)));
}
@Test
public void writeOtherContentTypeParameters() throws IOException {
Channel channel = new Channel("rss_2.0");
channel.setTitle("title");
channel.setLink("http://example.com");
channel.setDescription("description");
MockHttpOutputMessage message = new MockHttpOutputMessage();
converter.write(channel, new MediaType("application", "rss+xml", singletonMap("x", "y")), message);
assertThat(message.getHeaders().getContentType().getParameters())
.as("Invalid content-type")
.hasSize(2)
.containsEntry("x", "y")
.containsEntry("charset", "UTF-8");
}
}