001/*
002 * Copyright 2002-2014 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.mock.http;
018
019import java.io.ByteArrayOutputStream;
020import java.io.IOException;
021import java.io.OutputStream;
022import java.io.UnsupportedEncodingException;
023import java.nio.charset.Charset;
024
025import org.springframework.http.HttpHeaders;
026import org.springframework.http.HttpOutputMessage;
027
028/**
029 * Mock implementation of {@link HttpOutputMessage}.
030 *
031 * @author Rossen Stoyanchev
032 * @since 3.2
033 */
034public class MockHttpOutputMessage implements HttpOutputMessage {
035
036        private static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");
037
038        private final HttpHeaders headers = new HttpHeaders();
039
040        private final ByteArrayOutputStream body = new ByteArrayOutputStream(1024);
041
042
043        /**
044         * Return the headers.
045         */
046        @Override
047        public HttpHeaders getHeaders() {
048                return this.headers;
049        }
050
051        /**
052         * Return the body content.
053         */
054        @Override
055        public OutputStream getBody() throws IOException {
056                return this.body;
057        }
058
059        /**
060         * Return body content as a byte array.
061         */
062        public byte[] getBodyAsBytes() {
063                return this.body.toByteArray();
064        }
065
066        /**
067         * Return the body content interpreted as a UTF-8 string.
068         */
069        public String getBodyAsString() {
070                return getBodyAsString(DEFAULT_CHARSET);
071        }
072
073        /**
074         * Return the body content as a string.
075         * @param charset the charset to use to turn the body content to a String
076         */
077        public String getBodyAsString(Charset charset) {
078                byte[] bytes = getBodyAsBytes();
079                try {
080                        return new String(bytes, charset.name());
081                }
082                catch (UnsupportedEncodingException ex) {
083                        // should not occur
084                        throw new IllegalStateException(ex);
085                }
086        }
087
088}