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Jackson2CborEncoderTests.java
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Jackson2CborEncoderTests.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.codec.cbor;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.nio.charset.StandardCharsets;
import java.util.function.Consumer;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.junit.jupiter.api.Test;
import reactor.core.publisher.Flux;
import org.springframework.core.ResolvableType;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.core.testfixture.io.buffer.AbstractLeakCheckingTests;
import org.springframework.core.testfixture.io.buffer.DataBufferTestUtils;
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.assertj.core.api.Assertions.assertThatExceptionOfType;
import static org.springframework.core.io.buffer.DataBufferUtils.release;
import static org.springframework.http.MediaType.APPLICATION_XML;
/**
* Unit tests for {@link Jackson2CborEncoder}.
*
* @author Sebastien Deleuze
*/
public class Jackson2CborEncoderTests extends AbstractLeakCheckingTests {
private final static MimeType CBOR_MIME_TYPE = new MimeType("application", "cbor");
private final ObjectMapper mapper = Jackson2ObjectMapperBuilder.cbor().build();
private final Jackson2CborEncoder encoder = new Jackson2CborEncoder();
private Consumer<DataBuffer> pojoConsumer(Pojo expected) {
return dataBuffer -> {
try {
Pojo actual = this.mapper.reader().forType(Pojo.class)
.readValue(DataBufferTestUtils.dumpBytes(dataBuffer));
assertThat(actual).isEqualTo(expected);
release(dataBuffer);
}
catch (IOException ex) {
throw new UncheckedIOException(ex);
}
};
}
@Test
public void canEncode() {
ResolvableType pojoType = ResolvableType.forClass(Pojo.class);
assertThat(this.encoder.canEncode(pojoType, CBOR_MIME_TYPE)).isTrue();
assertThat(this.encoder.canEncode(pojoType, null)).isTrue();
// SPR-15464
assertThat(this.encoder.canEncode(ResolvableType.NONE, null)).isTrue();
assertThat(this.encoder.canEncode(ResolvableType.forClass(Pojo.class),
new MediaType("application", "cbor", StandardCharsets.UTF_8))).isTrue();
assertThat(this.encoder.canEncode(ResolvableType.forClass(Pojo.class),
new MediaType("application", "cbor", StandardCharsets.ISO_8859_1))).isFalse();
}
@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, CBOR_MIME_TYPE)).isFalse();
}
@Test
public void encode() {
Pojo value = new Pojo("foo", "bar");
DataBuffer result = encoder.encodeValue(value, this.bufferFactory, ResolvableType.forClass(Pojo.class), CBOR_MIME_TYPE, null);
pojoConsumer(value).accept(result);
}
@Test
public void encodeStream() {
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);
assertThatExceptionOfType(UnsupportedOperationException.class).isThrownBy(() ->
encoder.encode(input, this.bufferFactory, type, CBOR_MIME_TYPE, null));
}
}