/*
* 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.util.Collections;
import java.util.Map;
import org.junit.Test;
import reactor.core.publisher.Mono;
import reactor.test.StepVerifier;
import org.springframework.core.io.ByteArrayResource;
import org.springframework.core.io.Resource;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpRange;
import org.springframework.http.HttpStatus;
import org.springframework.mock.http.server.reactive.test.MockServerHttpRequest;
import org.springframework.mock.http.server.reactive.test.MockServerHttpResponse;
import org.springframework.util.MimeTypeUtils;
import org.springframework.util.StringUtils;
import static org.hamcrest.Matchers.containsInAnyOrder;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.startsWith;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertThat;
import static org.springframework.http.MediaType.TEXT_PLAIN;
import static org.springframework.mock.http.server.reactive.test.MockServerHttpRequest.get;
/**
* Unit tests for {@link ResourceHttpMessageWriter}.
*
* @author Brian Clozel
* @author Rossen Stoyanchev
*/
public class ResourceHttpMessageWriterTests {
private static final Map<String, Object> HINTS = Collections.emptyMap();
private final ResourceHttpMessageWriter writer = new ResourceHttpMessageWriter();
private final MockServerHttpResponse response = new MockServerHttpResponse();
private final Mono<Resource> input = Mono.just(new ByteArrayResource(
"Spring Framework test resource content.".getBytes(StandardCharsets.UTF_8)));
@Test
public void getWritableMediaTypes() throws Exception {
assertThat(this.writer.getWritableMediaTypes(),
containsInAnyOrder(MimeTypeUtils.APPLICATION_OCTET_STREAM, MimeTypeUtils.ALL));
}
@Test
public void writeResource() throws Exception {
testWrite(get("/").build());
assertThat(this.response.getHeaders().getContentType(), is(TEXT_PLAIN));
assertThat(this.response.getHeaders().getContentLength(), is(39L));
assertThat(this.response.getHeaders().getFirst(HttpHeaders.ACCEPT_RANGES), is("bytes"));
String content = "Spring Framework test resource content.";
StepVerifier.create(this.response.getBodyAsString()).expectNext(content).expectComplete().verify();
}
@Test
public void writeSingleRegion() throws Exception {
testWrite(get("/").range(of(0, 5)).build());
assertThat(this.response.getHeaders().getContentType(), is(TEXT_PLAIN));
assertThat(this.response.getHeaders().getFirst(HttpHeaders.CONTENT_RANGE), is("bytes 0-5/39"));
assertThat(this.response.getHeaders().getContentLength(), is(6L));
StepVerifier.create(this.response.getBodyAsString()).expectNext("Spring").expectComplete().verify();
}
@Test
public void writeMultipleRegions() throws Exception {
testWrite(get("/").range(of(0,5), of(7,15), of(17,20), of(22,38)).build());
HttpHeaders headers = this.response.getHeaders();
String contentType = headers.getContentType().toString();
String boundary = contentType.substring(30);
assertThat(contentType, startsWith("multipart/byteranges;boundary="));
StepVerifier.create(this.response.getBodyAsString())
.consumeNextWith(content -> {
String[] actualRanges = StringUtils.tokenizeToStringArray(content, "\r\n", false, true);
String[] expected = new String[] {
"--" + boundary,
"Content-Type: text/plain",
"Content-Range: bytes 0-5/39",
"Spring",
"--" + boundary,
"Content-Type: text/plain",
"Content-Range: bytes 7-15/39",
"Framework",
"--" + boundary,
"Content-Type: text/plain",
"Content-Range: bytes 17-20/39",
"test",
"--" + boundary,
"Content-Type: text/plain",
"Content-Range: bytes 22-38/39",
"resource content.",
"--" + boundary + "--"
};
assertArrayEquals(expected, actualRanges);
})
.expectComplete()
.verify();
}
@Test
public void invalidRange() throws Exception {
testWrite(get("/").header(HttpHeaders.RANGE, "invalid").build());
assertThat(this.response.getHeaders().getFirst(HttpHeaders.ACCEPT_RANGES), is("bytes"));
assertThat(this.response.getStatusCode(), is(HttpStatus.REQUESTED_RANGE_NOT_SATISFIABLE));
}
private void testWrite(MockServerHttpRequest request) {
Mono<Void> mono = this.writer.write(this.input, null, null, TEXT_PLAIN, request, this.response, HINTS);
StepVerifier.create(mono).expectComplete().verify();
}
private static HttpRange of(int first, int last) {
return HttpRange.createByteRange(first, last);
}
}