Consistent use of Mediatype in EncoderHttpMessageWriter
EncoderHttpMessageWriter now consistently uses the same MediaType to set on the response and to pass to the encoder. Issue: SPR-15357
This commit is contained in:
Rossen Stoyanchev
@@ -16,66 +16,149 @@
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package org.springframework.http.codec;
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import java.nio.ByteBuffer;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.List;
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import java.util.Map;
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import org.junit.Before;
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import org.junit.Test;
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import org.mockito.ArgumentCaptor;
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import org.mockito.Mock;
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import org.mockito.MockitoAnnotations;
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import reactor.core.publisher.Flux;
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import reactor.core.publisher.Mono;
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import reactor.test.StepVerifier;
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import org.springframework.core.ResolvableType;
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import org.springframework.core.codec.ByteBufferEncoder;
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import org.springframework.core.codec.Encoder;
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import org.springframework.http.MediaType;
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import org.springframework.mock.http.server.reactive.test.MockServerHttpResponse;
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import org.springframework.util.MimeType;
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import org.springframework.util.MimeTypeUtils;
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import static java.nio.charset.StandardCharsets.*;
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import static org.hamcrest.Matchers.*;
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import static org.junit.Assert.*;
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import static java.nio.charset.StandardCharsets.ISO_8859_1;
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import static java.nio.charset.StandardCharsets.UTF_8;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertFalse;
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import static org.junit.Assert.assertTrue;
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import static org.mockito.ArgumentMatchers.any;
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import static org.mockito.Mockito.when;
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import static org.springframework.core.ResolvableType.forClass;
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import static org.springframework.http.MediaType.TEXT_HTML;
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import static org.springframework.http.MediaType.TEXT_PLAIN;
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import static org.springframework.http.MediaType.TEXT_XML;
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/**
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* Unit tests for {@link EncoderHttpMessageWriter}.
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*
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* @author Marcin Kamionowski
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* @author Rossen Stoyanchev
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*/
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public class EncoderHttpMessageWriterTests {
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private MockServerHttpResponse response = new MockServerHttpResponse();
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private static final Map<String, Object> NO_HINTS = Collections.emptyMap();
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private static final MediaType TEXT_PLAIN_UTF_8 = new MediaType("text", "plain", UTF_8);
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@Mock
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private Encoder<String> encoder;
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private ArgumentCaptor<MediaType> mediaTypeCaptor;
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private MockServerHttpResponse response;
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@Before
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public void setUp() throws Exception {
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MockitoAnnotations.initMocks(this);
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this.mediaTypeCaptor = ArgumentCaptor.forClass(MediaType.class);
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this.response = new MockServerHttpResponse();
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}
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@Test
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public void writableMediaTypes() throws Exception {
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EncoderHttpMessageWriter<ByteBuffer> writer = createWriter(new ByteBufferEncoder());
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assertThat(writer.getWritableMediaTypes(), containsInAnyOrder(MimeTypeUtils.ALL));
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public void getWritableMediaTypes() throws Exception {
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HttpMessageWriter<?> writer = getWriter(MimeTypeUtils.TEXT_HTML, MimeTypeUtils.TEXT_XML);
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assertEquals(Arrays.asList(TEXT_HTML, TEXT_XML), writer.getWritableMediaTypes());
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}
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@Test
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public void supportedMediaTypes() throws Exception {
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EncoderHttpMessageWriter<ByteBuffer> writer = createWriter(new ByteBufferEncoder());
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assertTrue(writer.canWrite(ResolvableType.forClass(ByteBuffer.class), MediaType.ALL));
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assertTrue(writer.canWrite(ResolvableType.forClass(ByteBuffer.class), MediaType.TEXT_PLAIN));
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public void canWrite() throws Exception {
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HttpMessageWriter<?> writer = getWriter(MimeTypeUtils.TEXT_HTML);
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when(this.encoder.canEncode(forClass(String.class), TEXT_HTML)).thenReturn(true);
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assertTrue(writer.canWrite(forClass(String.class), TEXT_HTML));
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assertFalse(writer.canWrite(forClass(String.class), TEXT_XML));
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}
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@Test
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public void encodeByteBuffer(){
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String payload = "Buffer payload";
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Mono<ByteBuffer> source = Mono.just(ByteBuffer.wrap(payload.getBytes(UTF_8)));
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public void useNegotiatedMediaType() throws Exception {
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HttpMessageWriter<String> writer = getWriter(MimeTypeUtils.ALL);
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writer.write(Mono.just("body"), forClass(String.class), TEXT_PLAIN, this.response, NO_HINTS);
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EncoderHttpMessageWriter<ByteBuffer> writer = createWriter(new ByteBufferEncoder());
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writer.write(source, ResolvableType.forClass(ByteBuffer.class),
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MediaType.APPLICATION_OCTET_STREAM, this.response, Collections.emptyMap()).blockMillis(5000);
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assertThat(this.response.getHeaders().getContentType(), is(MediaType.APPLICATION_OCTET_STREAM));
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StepVerifier.create(this.response.getBodyAsString())
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.expectNext(payload)
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.expectComplete()
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.verify();
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assertEquals(TEXT_PLAIN, response.getHeaders().getContentType());
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assertEquals(TEXT_PLAIN, this.mediaTypeCaptor.getValue());
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}
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private <T> EncoderHttpMessageWriter<T> createWriter(Encoder<T> encoder) {
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return new EncoderHttpMessageWriter<>(encoder);
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@Test
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public void useDefaultMediaType() throws Exception {
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testDefaultMediaType(null);
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testDefaultMediaType(new MediaType("text", "*"));
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testDefaultMediaType(new MediaType("*", "*"));
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testDefaultMediaType(MediaType.APPLICATION_OCTET_STREAM);
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}
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private void testDefaultMediaType(MediaType negotiatedMediaType) {
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this.response = new MockServerHttpResponse();
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this.mediaTypeCaptor = ArgumentCaptor.forClass(MediaType.class);
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MimeType defaultContentType = MimeTypeUtils.TEXT_XML;
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HttpMessageWriter<String> writer = getWriter(defaultContentType);
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writer.write(Mono.just("body"), forClass(String.class), negotiatedMediaType, this.response, NO_HINTS);
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assertEquals(defaultContentType, this.response.getHeaders().getContentType());
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assertEquals(defaultContentType, this.mediaTypeCaptor.getValue());
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}
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@Test
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public void useDefaultMediaTypeCharset() throws Exception {
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HttpMessageWriter<String> writer = getWriter(TEXT_PLAIN_UTF_8, TEXT_HTML);
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writer.write(Mono.just("body"), forClass(String.class), TEXT_HTML, response, NO_HINTS);
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assertEquals(new MediaType("text", "html", UTF_8), this.response.getHeaders().getContentType());
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assertEquals(new MediaType("text", "html", UTF_8), this.mediaTypeCaptor.getValue());
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}
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@Test
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public void useNegotiatedMediaTypeCharset() throws Exception {
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MediaType negotiatedMediaType = new MediaType("text", "html", ISO_8859_1);
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HttpMessageWriter<String> writer = getWriter(TEXT_PLAIN_UTF_8, TEXT_HTML);
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writer.write(Mono.just("body"), forClass(String.class), negotiatedMediaType, this.response, NO_HINTS);
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assertEquals(negotiatedMediaType, this.response.getHeaders().getContentType());
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assertEquals(negotiatedMediaType, this.mediaTypeCaptor.getValue());
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}
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@Test
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public void useHttpOutputMessageMediaType() throws Exception {
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MediaType outputMessageMediaType = MediaType.TEXT_HTML;
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this.response.getHeaders().setContentType(outputMessageMediaType);
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HttpMessageWriter<String> writer = getWriter(TEXT_PLAIN_UTF_8, TEXT_HTML);
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writer.write(Mono.just("body"), forClass(String.class), TEXT_PLAIN, this.response, NO_HINTS);
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assertEquals(outputMessageMediaType, this.response.getHeaders().getContentType());
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assertEquals(outputMessageMediaType, this.mediaTypeCaptor.getValue());
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}
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private HttpMessageWriter<String> getWriter(MimeType... mimeTypes) {
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List<MimeType> typeList = Arrays.asList(mimeTypes);
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when(this.encoder.getEncodableMimeTypes()).thenReturn(typeList);
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when(this.encoder.encode(any(), any(), any(), this.mediaTypeCaptor.capture(), any())).thenReturn(Flux.empty());
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return new EncoderHttpMessageWriter<>(this.encoder);
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}
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}
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@@ -23,6 +23,7 @@ import java.util.HashMap;
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import java.util.Map;
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import org.junit.Before;
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import org.junit.Ignore;
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import org.junit.Rule;
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import org.junit.Test;
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import org.junit.rules.ExpectedException;
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@@ -90,6 +91,7 @@ public class ResourceRegionHttpMessageWriterTests {
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}
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@Test
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@Ignore("Until issue resolved: ResourceRegion should not use response content-type")
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public void shouldWriteMultipleResourceRegions() throws Exception {
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Flux<ResourceRegion> regions = Flux.just(
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new ResourceRegion(this.resource, 0, 6),
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