/
ServerHttpResponseTests.java
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/
ServerHttpResponseTests.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.server.reactive;
import java.nio.ByteBuffer;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;
import org.junit.jupiter.api.Test;
import org.reactivestreams.Publisher;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.core.io.buffer.DefaultDataBuffer;
import org.springframework.core.io.buffer.DefaultDataBufferFactory;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseCookie;
import static org.assertj.core.api.Assertions.assertThat;
/**
* @author Rossen Stoyanchev
* @author Sebastien Deleuze
* @author Brian Clozel
*/
public class ServerHttpResponseTests {
@Test
void writeWith() throws Exception {
TestServerHttpResponse response = new TestServerHttpResponse();
response.writeWith(Flux.just(wrap("a"), wrap("b"), wrap("c"))).block();
assertThat(response.statusCodeWritten).isTrue();
assertThat(response.headersWritten).isTrue();
assertThat(response.cookiesWritten).isTrue();
assertThat(response.body.size()).isEqualTo(3);
assertThat(new String(response.body.get(0).asByteBuffer().array(), StandardCharsets.UTF_8)).isEqualTo("a");
assertThat(new String(response.body.get(1).asByteBuffer().array(), StandardCharsets.UTF_8)).isEqualTo("b");
assertThat(new String(response.body.get(2).asByteBuffer().array(), StandardCharsets.UTF_8)).isEqualTo("c");
}
@Test // SPR-14952
void writeAndFlushWithFluxOfDefaultDataBuffer() throws Exception {
TestServerHttpResponse response = new TestServerHttpResponse();
Flux<Flux<DefaultDataBuffer>> flux = Flux.just(Flux.just(wrap("foo")));
response.writeAndFlushWith(flux).block();
assertThat(response.statusCodeWritten).isTrue();
assertThat(response.headersWritten).isTrue();
assertThat(response.cookiesWritten).isTrue();
assertThat(response.body.size()).isEqualTo(1);
assertThat(new String(response.body.get(0).asByteBuffer().array(), StandardCharsets.UTF_8)).isEqualTo("foo");
}
@Test
void writeWithFluxError() throws Exception {
IllegalStateException error = new IllegalStateException("boo");
writeWithError(Flux.error(error));
}
@Test
void writeWithMonoError() throws Exception {
IllegalStateException error = new IllegalStateException("boo");
writeWithError(Mono.error(error));
}
void writeWithError(Publisher<DataBuffer> body) throws Exception {
TestServerHttpResponse response = new TestServerHttpResponse();
HttpHeaders headers = response.getHeaders();
headers.setContentType(MediaType.APPLICATION_JSON);
headers.set(HttpHeaders.CONTENT_ENCODING, "gzip");
headers.setContentLength(12);
response.writeWith(body).onErrorResume(ex -> Mono.empty()).block();
assertThat(response.statusCodeWritten).isFalse();
assertThat(response.headersWritten).isFalse();
assertThat(response.cookiesWritten).isFalse();
assertThat(headers).doesNotContainKeys(HttpHeaders.CONTENT_TYPE, HttpHeaders.CONTENT_LENGTH,
HttpHeaders.CONTENT_ENCODING);
assertThat(response.body.isEmpty()).isTrue();
}
@Test
void setComplete() throws Exception {
TestServerHttpResponse response = new TestServerHttpResponse();
response.setComplete().block();
assertThat(response.statusCodeWritten).isTrue();
assertThat(response.headersWritten).isTrue();
assertThat(response.cookiesWritten).isTrue();
assertThat(response.body.isEmpty()).isTrue();
}
@Test
void beforeCommitWithComplete() throws Exception {
ResponseCookie cookie = ResponseCookie.from("ID", "123").build();
TestServerHttpResponse response = new TestServerHttpResponse();
response.beforeCommit(() -> Mono.fromRunnable(() -> response.getCookies().add(cookie.getName(), cookie)));
response.writeWith(Flux.just(wrap("a"), wrap("b"), wrap("c"))).block();
assertThat(response.statusCodeWritten).isTrue();
assertThat(response.headersWritten).isTrue();
assertThat(response.cookiesWritten).isTrue();
assertThat(response.getCookies().getFirst("ID")).isSameAs(cookie);
assertThat(response.body.size()).isEqualTo(3);
assertThat(new String(response.body.get(0).asByteBuffer().array(), StandardCharsets.UTF_8)).isEqualTo("a");
assertThat(new String(response.body.get(1).asByteBuffer().array(), StandardCharsets.UTF_8)).isEqualTo("b");
assertThat(new String(response.body.get(2).asByteBuffer().array(), StandardCharsets.UTF_8)).isEqualTo("c");
}
@Test
void beforeCommitActionWithSetComplete() throws Exception {
ResponseCookie cookie = ResponseCookie.from("ID", "123").build();
TestServerHttpResponse response = new TestServerHttpResponse();
response.beforeCommit(() -> {
response.getCookies().add(cookie.getName(), cookie);
return Mono.empty();
});
response.setComplete().block();
assertThat(response.statusCodeWritten).isTrue();
assertThat(response.headersWritten).isTrue();
assertThat(response.cookiesWritten).isTrue();
assertThat(response.body.isEmpty()).isTrue();
assertThat(response.getCookies().getFirst("ID")).isSameAs(cookie);
}
private DefaultDataBuffer wrap(String a) {
return new DefaultDataBufferFactory().wrap(ByteBuffer.wrap(a.getBytes(StandardCharsets.UTF_8)));
}
private static class TestServerHttpResponse extends AbstractServerHttpResponse {
private boolean statusCodeWritten;
private boolean headersWritten;
private boolean cookiesWritten;
private final List<DataBuffer> body = new ArrayList<>();
public TestServerHttpResponse() {
super(new DefaultDataBufferFactory());
}
@Override
public <T> T getNativeResponse() {
throw new IllegalStateException("This is a mock. No running server, no native response.");
}
@Override
public void applyStatusCode() {
assertThat(this.statusCodeWritten).isFalse();
this.statusCodeWritten = true;
}
@Override
protected void applyHeaders() {
assertThat(this.headersWritten).isFalse();
this.headersWritten = true;
}
@Override
protected void applyCookies() {
assertThat(this.cookiesWritten).isFalse();
this.cookiesWritten = true;
}
@Override
protected Mono<Void> writeWithInternal(Publisher<? extends DataBuffer> body) {
return Flux.from(body).map(b -> {
this.body.add(b);
return b;
}).then();
}
@Override
protected Mono<Void> writeAndFlushWithInternal(
Publisher<? extends Publisher<? extends DataBuffer>> bodyWithFlush) {
return Flux.from(bodyWithFlush).flatMap(body ->
Flux.from(body).map(b -> {
this.body.add(b);
return b;
})
).then();
}
}
}