/*
    * ====================================================================
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  
  package org.apache.http.impl.conn;
  
  import org.apache.http.Consts;
  import org.apache.http.Header;
  import org.apache.http.HttpResponse;
  import org.apache.http.HttpVersion;
  import org.apache.http.NoHttpResponseException;
  import org.apache.http.ProtocolException;
  import org.apache.http.io.HttpMessageParser;
  import org.apache.http.io.SessionInputBuffer;
  import org.apache.http.util.CharArrayBuffer;
  import org.junit.Assert;
  import org.junit.Test;
  
  /**
   * Tests for {@link DefaultResponseParser}.
   */
  public class TestDefaultHttpResponseParser {
  
      @Test
      public void testResponseParsingWithSomeGarbage() throws Exception {
          final String s =
              "garbage\r\n" +
              "garbage\r\n" +
              "more garbage\r\n" +
              "HTTP/1.1 200 OK\r\n" +
              "header1: value1\r\n" +
              "header2: value2\r\n" +
              "\r\n";
  
          final SessionInputBuffer inBuffer = new SessionInputBufferMock(s, Consts.ASCII);
          final HttpMessageParser<HttpResponse> parser = new DefaultHttpResponseParser(inBuffer);
  
          final HttpResponse response = parser.parse();
          Assert.assertNotNull(response);
          Assert.assertEquals(HttpVersion.HTTP_1_1, response.getProtocolVersion());
          Assert.assertEquals(200, response.getStatusLine().getStatusCode());
  
          final Header[] headers = response.getAllHeaders();
          Assert.assertNotNull(headers);
          Assert.assertEquals(2, headers.length);
          Assert.assertEquals("header1", headers[0].getName());
          Assert.assertEquals("header2", headers[1].getName());
      }
  
      @Test(expected=ProtocolException.class)
      public void testResponseParsingWithTooMuchGarbage() throws Exception {
          final String s =
              "garbage\r\n" +
              "garbage\r\n" +
              "more garbage\r\n" +
              "HTTP/1.1 200 OK\r\n" +
              "header1: value1\r\n" +
              "header2: value2\r\n" +
              "\r\n";
  
          final SessionInputBuffer inBuffer = new SessionInputBufferMock(s, Consts.ASCII);
          final HttpMessageParser<HttpResponse> parser = new DefaultHttpResponseParser(inBuffer) {
  
              @Override
              protected boolean reject(final CharArrayBuffer line, final int count) {
                  return count >= 2;
              }
  
          };
          parser.parse();
      }
  
      @Test(expected=NoHttpResponseException.class)
      public void testResponseParsingNoResponse() throws Exception {
          final SessionInputBuffer inBuffer = new SessionInputBufferMock("", Consts.ASCII);
          final HttpMessageParser<HttpResponse> parser = new DefaultHttpResponseParser(inBuffer);
         parser.parse();
     }
 
     @Test(expected=ProtocolException.class)
     public void testResponseParsingOnlyGarbage() throws Exception {
         final String s =
             "garbage\r\n" +
             "garbage\r\n" +
             "more garbage\r\n" +
             "a lot more garbage\r\n";
         final SessionInputBuffer inBuffer = new SessionInputBufferMock(s, Consts.ASCII);
         final HttpMessageParser<HttpResponse> parser = new DefaultHttpResponseParser(inBuffer);
         parser.parse();
     }
 
 }