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Jackson2SmileEncoderTests.java
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/
Jackson2SmileEncoderTests.java
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/*
* Copyright 2002-2020 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.codec.json;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.nio.charset.StandardCharsets;
import java.util.Arrays;
import java.util.List;
import com.fasterxml.jackson.databind.MappingIterator;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.junit.jupiter.api.Test;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import reactor.test.StepVerifier;
import org.springframework.core.ResolvableType;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.core.io.buffer.DataBufferUtils;
import org.springframework.core.testfixture.codec.AbstractEncoderTests;
import org.springframework.http.MediaType;
import org.springframework.http.codec.ServerSentEvent;
import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
import org.springframework.util.MimeType;
import org.springframework.web.testfixture.xml.Pojo;
import static org.assertj.core.api.Assertions.assertThat;
import static org.springframework.core.io.buffer.DataBufferUtils.release;
import static org.springframework.http.MediaType.APPLICATION_XML;
/**
* Unit tests for {@link Jackson2SmileEncoder}.
*
* @author Sebastien Deleuze
*/
public class Jackson2SmileEncoderTests extends AbstractEncoderTests<Jackson2SmileEncoder> {
private final static MimeType SMILE_MIME_TYPE = new MimeType("application", "x-jackson-smile");
private final static MimeType STREAM_SMILE_MIME_TYPE = new MimeType("application", "stream+x-jackson-smile");
private final Jackson2SmileEncoder encoder = new Jackson2SmileEncoder();
private final ObjectMapper mapper = Jackson2ObjectMapperBuilder.smile().build();
public Jackson2SmileEncoderTests() {
super(new Jackson2SmileEncoder());
}
@Override
@Test
public void canEncode() {
ResolvableType pojoType = ResolvableType.forClass(Pojo.class);
assertThat(this.encoder.canEncode(pojoType, SMILE_MIME_TYPE)).isTrue();
assertThat(this.encoder.canEncode(pojoType, STREAM_SMILE_MIME_TYPE)).isTrue();
assertThat(this.encoder.canEncode(pojoType, null)).isTrue();
assertThat(this.encoder.canEncode(ResolvableType.forClass(Pojo.class),
new MediaType("application", "x-jackson-smile", StandardCharsets.UTF_8))).isTrue();
assertThat(this.encoder.canEncode(ResolvableType.forClass(Pojo.class),
new MediaType("application", "x-jackson-smile", StandardCharsets.ISO_8859_1))).isFalse();
// SPR-15464
assertThat(this.encoder.canEncode(ResolvableType.NONE, null)).isTrue();
}
@Test
public void canNotEncode() {
assertThat(this.encoder.canEncode(ResolvableType.forClass(String.class), null)).isFalse();
assertThat(this.encoder.canEncode(ResolvableType.forClass(Pojo.class), APPLICATION_XML)).isFalse();
ResolvableType sseType = ResolvableType.forClass(ServerSentEvent.class);
assertThat(this.encoder.canEncode(sseType, SMILE_MIME_TYPE)).isFalse();
}
@Override
@Test
public void encode() {
List<Pojo> list = Arrays.asList(
new Pojo("foo", "bar"),
new Pojo("foofoo", "barbar"),
new Pojo("foofoofoo", "barbarbar"));
Flux<Pojo> input = Flux.fromIterable(list);
testEncode(input, Pojo.class, step -> step
.consumeNextWith(dataBuffer -> {
try {
Object actual = this.mapper.reader().forType(List.class)
.readValue(dataBuffer.asInputStream());
assertThat(actual).isEqualTo(list);
}
catch (IOException e) {
throw new UncheckedIOException(e);
}
finally {
release(dataBuffer);
}
}));
}
@Test
public void encodeError() throws Exception {
Mono<Pojo> input = Mono.error(new InputException());
testEncode(input, Pojo.class, step -> step
.expectError(InputException.class)
.verify());
}
@Test
public void encodeAsStream() throws Exception {
Pojo pojo1 = new Pojo("foo", "bar");
Pojo pojo2 = new Pojo("foofoo", "barbar");
Pojo pojo3 = new Pojo("foofoofoo", "barbarbar");
Flux<Pojo> input = Flux.just(pojo1, pojo2, pojo3);
ResolvableType type = ResolvableType.forClass(Pojo.class);
Flux<DataBuffer> result = this.encoder
.encode(input, bufferFactory, type, STREAM_SMILE_MIME_TYPE, null);
Mono<MappingIterator<Pojo>> joined = DataBufferUtils.join(result)
.map(buffer -> {
try {
return this.mapper.reader().forType(Pojo.class).readValues(buffer.asInputStream(true));
}
catch (IOException ex) {
throw new UncheckedIOException(ex);
}
});
StepVerifier.create(joined)
.assertNext(iter -> assertThat(iter).toIterable().contains(pojo1, pojo2, pojo3))
.verifyComplete();
}
}