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// Copyright (C) 2015 The Android Open Source Project
//
// 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 com.google.gerrit.util.http.testutil;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkState;
import static java.nio.charset.StandardCharsets.UTF_8;
import static java.util.Objects.requireNonNull;
import com.google.common.collect.Iterables;
import com.google.common.collect.LinkedListMultimap;
import com.google.common.collect.ListMultimap;
import com.google.common.net.HttpHeaders;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.nio.charset.Charset;
import java.util.Collection;
import java.util.Locale;
import javax.servlet.ServletOutputStream;
import javax.servlet.WriteListener;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.jgit.util.RawParseUtils;
/** Simple fake implementation of {@link HttpServletResponse}. */
public class FakeHttpServletResponse implements HttpServletResponse {
private final ByteArrayOutputStream actualBody = new ByteArrayOutputStream();
private final ListMultimap<String, String> headers = LinkedListMultimap.create();
private int status = SC_OK;
private boolean committed;
private ServletOutputStream outputStream;
private PrintWriter writer;
public FakeHttpServletResponse() {}
@Override
public synchronized void flushBuffer() throws IOException {
if (outputStream != null) {
outputStream.flush();
}
if (writer != null) {
writer.flush();
}
}
@Override
public int getBufferSize() {
throw new UnsupportedOperationException();
}
@Override
public String getCharacterEncoding() {
return UTF_8.name();
}
@Override
public String getContentType() {
return null;
}
@Override
public Locale getLocale() {
return Locale.US;
}
@Override
public synchronized ServletOutputStream getOutputStream() {
checkState(writer == null, "getWriter() already called");
if (outputStream == null) {
outputStream =
new ServletOutputStream() {
@Override
public void write(int c) throws IOException {
actualBody.write(c);
}
@Override
public boolean isReady() {
return true;
}
@Override
public void setWriteListener(WriteListener listener) {
throw new UnsupportedOperationException();
}
};
}
return outputStream;
}
@Override
public synchronized PrintWriter getWriter() {
checkState(outputStream == null, "getOutputStream() already called");
if (writer == null) {
writer = new PrintWriter(new OutputStreamWriter(actualBody, UTF_8));
}
return writer;
}
@Override
public synchronized boolean isCommitted() {
return committed;
}
@Override
public void reset() {
throw new UnsupportedOperationException();
}
@Override
public void resetBuffer() {
throw new UnsupportedOperationException();
}
@Override
public void setBufferSize(int sz) {
throw new UnsupportedOperationException();
}
@Override
public void setCharacterEncoding(String name) {
checkArgument(UTF_8.equals(Charset.forName(name)), "unsupported charset: %s", name);
}
@Override
public void setContentLength(int length) {
setContentLengthLong(length);
}
@Override
public void setContentLengthLong(long length) {
headers.removeAll(HttpHeaders.CONTENT_LENGTH);
addHeader(HttpHeaders.CONTENT_LENGTH, Long.toString(length));
}
@Override
public void setContentType(String type) {
headers.removeAll(HttpHeaders.CONTENT_TYPE);
addHeader(HttpHeaders.CONTENT_TYPE, type);
}
@Override
public void setLocale(Locale locale) {
throw new UnsupportedOperationException();
}
@Override
public void addCookie(Cookie cookie) {
addHeader("Set-Cookie", cookie.getName() + "=" + cookie.getValue());
}
@Override
public void addDateHeader(String name, long value) {
throw new UnsupportedOperationException();
}
@Override
public void addHeader(String name, String value) {
headers.put(name.toLowerCase(Locale.US), value);
}
@Override
public void addIntHeader(String name, int value) {
addHeader(name, Integer.toString(value));
}
@Override
public boolean containsHeader(String name) {
return headers.containsKey(name.toLowerCase(Locale.US));
}
@Override
public String encodeRedirectURL(String url) {
throw new UnsupportedOperationException();
}
@Override
@Deprecated
public String encodeRedirectUrl(String url) {
throw new UnsupportedOperationException();
}
@Override
public String encodeURL(String url) {
throw new UnsupportedOperationException();
}
@Override
@Deprecated
public String encodeUrl(String url) {
throw new UnsupportedOperationException();
}
@Override
public synchronized void sendError(int sc) {
status = sc;
committed = true;
}
@Override
public synchronized void sendError(int sc, String msg) {
status = sc;
committed = true;
}
@Override
public synchronized void sendRedirect(String loc) {
status = SC_FOUND;
setHeader(HttpHeaders.LOCATION, loc);
committed = true;
}
@Override
public void setDateHeader(String name, long value) {
setHeader(name, Long.toString(value));
}
@Override
public void setHeader(String name, String value) {
headers.removeAll(name.toLowerCase(Locale.US));
addHeader(name, value);
}
@Override
public void setIntHeader(String name, int value) {
headers.removeAll(name.toLowerCase(Locale.US));
addIntHeader(name, value);
}
@Override
public synchronized void setStatus(int sc) {
status = sc;
committed = true;
}
@Override
@Deprecated
public synchronized void setStatus(int sc, String msg) {
status = sc;
committed = true;
}
@Override
public synchronized int getStatus() {
return status;
}
@Override
public String getHeader(String name) {
return Iterables.getFirst(headers.get(requireNonNull(name.toLowerCase(Locale.US))), null);
}
@Override
public Collection<String> getHeaderNames() {
return headers.keySet();
}
@Override
public Collection<String> getHeaders(String name) {
return headers.get(requireNonNull(name.toLowerCase(Locale.US)));
}
public byte[] getActualBody() {
return actualBody.toByteArray();
}
public String getActualBodyString() {
return RawParseUtils.decode(getActualBody());
}
}