/*
* Copyright 2002-2017 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.http.codec;
import java.nio.charset.StandardCharsets;
import java.time.Duration;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import org.junit.Test;
import reactor.core.publisher.Flux;
import org.springframework.core.ResolvableType;
import org.springframework.core.codec.ByteArrayDecoder;
import org.springframework.core.codec.ByteArrayEncoder;
import org.springframework.core.codec.ByteBufferDecoder;
import org.springframework.core.codec.ByteBufferEncoder;
import org.springframework.core.codec.CharSequenceEncoder;
import org.springframework.core.codec.DataBufferDecoder;
import org.springframework.core.codec.DataBufferEncoder;
import org.springframework.core.codec.Decoder;
import org.springframework.core.codec.Encoder;
import org.springframework.core.codec.ResourceDecoder;
import org.springframework.core.codec.StringDecoder;
import org.springframework.core.io.buffer.DefaultDataBufferFactory;
import org.springframework.http.MediaType;
import org.springframework.http.codec.json.Jackson2JsonDecoder;
import org.springframework.http.codec.json.Jackson2JsonEncoder;
import org.springframework.http.codec.multipart.MultipartHttpMessageWriter;
import org.springframework.http.codec.xml.Jaxb2XmlDecoder;
import org.springframework.http.codec.xml.Jaxb2XmlEncoder;
import org.springframework.util.MimeTypeUtils;
import static org.junit.Assert.*;
import static org.springframework.core.ResolvableType.forClass;
/**
* Unit tests for {@link ClientCodecConfigurer}.
* @author Rossen Stoyanchev
*/
public class ClientCodecConfigurerTests {
private final ClientCodecConfigurer configurer = new DefaultClientCodecConfigurer();
private final AtomicInteger index = new AtomicInteger(0);
@Test
public void defaultReaders() throws Exception {
List<HttpMessageReader<?>> readers = this.configurer.getReaders();
assertEquals(9, readers.size());
assertEquals(ByteArrayDecoder.class, getNextDecoder(readers).getClass());
assertEquals(ByteBufferDecoder.class, getNextDecoder(readers).getClass());
assertEquals(DataBufferDecoder.class, getNextDecoder(readers).getClass());
assertEquals(ResourceDecoder.class, getNextDecoder(readers).getClass());
assertStringDecoder(getNextDecoder(readers), true);
assertEquals(Jaxb2XmlDecoder.class, getNextDecoder(readers).getClass());
assertEquals(Jackson2JsonDecoder.class, getNextDecoder(readers).getClass());
assertSseReader(readers);
assertStringDecoder(getNextDecoder(readers), false);
}
@Test
public void defaultWriters() throws Exception {
List<HttpMessageWriter<?>> writers = this.configurer.getWriters();
assertEquals(10, writers.size());
assertEquals(ByteArrayEncoder.class, getNextEncoder(writers).getClass());
assertEquals(ByteBufferEncoder.class, getNextEncoder(writers).getClass());
assertEquals(DataBufferEncoder.class, getNextEncoder(writers).getClass());
assertEquals(ResourceHttpMessageWriter.class, writers.get(index.getAndIncrement()).getClass());
assertStringEncoder(getNextEncoder(writers), true);
assertEquals(FormHttpMessageWriter.class, writers.get(this.index.getAndIncrement()).getClass());
assertEquals(MultipartHttpMessageWriter.class, writers.get(this.index.getAndIncrement()).getClass());
assertEquals(Jaxb2XmlEncoder.class, getNextEncoder(writers).getClass());
assertEquals(Jackson2JsonEncoder.class, getNextEncoder(writers).getClass());
assertStringEncoder(getNextEncoder(writers), false);
}
@Test
public void jackson2EncoderOverride() throws Exception {
Jackson2JsonDecoder decoder = new Jackson2JsonDecoder();
this.configurer.defaultCodecs().jackson2Decoder(decoder);
assertSame(decoder, this.configurer.getReaders().stream()
.filter(reader -> ServerSentEventHttpMessageReader.class.equals(reader.getClass()))
.map(reader -> (ServerSentEventHttpMessageReader) reader)
.findFirst()
.map(ServerSentEventHttpMessageReader::getDecoder)
.filter(e -> e == decoder).orElse(null));
}
private Decoder<?> getNextDecoder(List<HttpMessageReader<?>> readers) {
HttpMessageReader<?> reader = readers.get(this.index.getAndIncrement());
assertEquals(DecoderHttpMessageReader.class, reader.getClass());
return ((DecoderHttpMessageReader<?>) reader).getDecoder();
}
private Encoder<?> getNextEncoder(List<HttpMessageWriter<?>> writers) {
HttpMessageWriter<?> writer = writers.get(this.index.getAndIncrement());
assertEquals(EncoderHttpMessageWriter.class, writer.getClass());
return ((EncoderHttpMessageWriter<?>) writer).getEncoder();
}
@SuppressWarnings("unchecked")
private void assertStringDecoder(Decoder<?> decoder, boolean textOnly) {
assertEquals(StringDecoder.class, decoder.getClass());
assertTrue(decoder.canDecode(forClass(String.class), MimeTypeUtils.TEXT_PLAIN));
assertEquals(!textOnly, decoder.canDecode(forClass(String.class), MediaType.TEXT_EVENT_STREAM));
Flux<String> decoded = (Flux<String>) decoder.decode(
Flux.just(new DefaultDataBufferFactory().wrap("line1\nline2".getBytes(StandardCharsets.UTF_8))),
ResolvableType.forClass(String.class), MimeTypeUtils.TEXT_PLAIN, Collections.emptyMap());
assertEquals(Collections.singletonList("line1\nline2"), decoded.collectList().block(Duration.ZERO));
}
private void assertStringEncoder(Encoder<?> encoder, boolean textOnly) {
assertEquals(CharSequenceEncoder.class, encoder.getClass());
assertTrue(encoder.canEncode(forClass(String.class), MimeTypeUtils.TEXT_PLAIN));
assertEquals(!textOnly, encoder.canEncode(forClass(String.class), MediaType.TEXT_EVENT_STREAM));
}
private void assertSseReader(List<HttpMessageReader<?>> readers) {
HttpMessageReader<?> reader = readers.get(this.index.getAndIncrement());
assertEquals(ServerSentEventHttpMessageReader.class, reader.getClass());
Decoder<?> decoder = ((ServerSentEventHttpMessageReader) reader).getDecoder();
assertNotNull(decoder);
assertEquals(Jackson2JsonDecoder.class, decoder.getClass());
}
}