/*
    * ====================================================================
    * 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.io;
  
  import java.io.InterruptedIOException;
  
  import org.apache.http.ConnectionClosedException;
  import org.apache.http.Consts;
  import org.apache.http.Header;
  import org.apache.http.HttpRequest;
  import org.apache.http.HttpVersion;
  import org.apache.http.RequestLine;
  import org.apache.http.impl.SessionInputBufferMock;
  import org.apache.http.io.SessionInputBuffer;
  import org.junit.Assert;
  import org.junit.Test;
  
  /**
   * Unit tests for {@link DefaultHttpRequestParser}.
   */
  public class TestRequestParser {
  
      @Test(expected=IllegalArgumentException.class)
      public void testInvalidConstructorInput() throws Exception {
          new DefaultHttpRequestParser(null);
      }
  
      @Test
      public void testBasicMessageParsing() throws Exception {
          final String s =
              "GET / HTTP/1.1\r\n" +
              "Host: localhost\r\n" +
              "User-Agent: whatever\r\n" +
              "Cookie: c1=stuff\r\n" +
              "\r\n";
          final SessionInputBuffer inBuffer = new SessionInputBufferMock(s, Consts.ASCII);
  
          final DefaultHttpRequestParser parser = new DefaultHttpRequestParser(inBuffer);
          final HttpRequest httprequest = parser.parse();
  
          final RequestLine reqline = httprequest.getRequestLine();
          Assert.assertNotNull(reqline);
          Assert.assertEquals("GET", reqline.getMethod());
          Assert.assertEquals("/", reqline.getUri());
          Assert.assertEquals(HttpVersion.HTTP_1_1, reqline.getProtocolVersion());
          final Header[] headers = httprequest.getAllHeaders();
          Assert.assertEquals(3, headers.length);
      }
  
      @Test
      public void testConnectionClosedException() throws Exception {
          final SessionInputBuffer inBuffer = new SessionInputBufferMock(new byte[] {});
  
          final DefaultHttpRequestParser parser = new DefaultHttpRequestParser(inBuffer);
          try {
              parser.parse();
              Assert.fail("ConnectionClosedException should have been thrown");
          } catch (final ConnectionClosedException expected) {
          }
      }
  
      @Test
      public void testMessageParsingTimeout() throws Exception {
          final String s =
              "GET \000/ HTTP/1.1\r\000\n" +
              "Host: loca\000lhost\r\n" +
              "User-Agent: whatever\r\n" +
              "Coo\000kie: c1=stuff\r\n" +
              "\000\r\n";
          final SessionInputBuffer inBuffer = new SessionInputBufferMock(
                  new TimeoutByteArrayInputStream(s.getBytes(Consts.ASCII)), 16);
  
          final DefaultHttpRequestParser parser = new DefaultHttpRequestParser(inBuffer);
  
          int timeoutCount = 0;
 
         HttpRequest httprequest = null;
         for (int i = 0; i < 10; i++) {
             try {
                 httprequest = parser.parse();
                 break;
             } catch (final InterruptedIOException ex) {
                 timeoutCount++;
             }
 
         }
         Assert.assertNotNull(httprequest);
         Assert.assertEquals(5, timeoutCount);
 
         final RequestLine reqline = httprequest.getRequestLine();
         Assert.assertNotNull(reqline);
         Assert.assertEquals("GET", reqline.getMethod());
         Assert.assertEquals("/", reqline.getUri());
         Assert.assertEquals(HttpVersion.HTTP_1_1, reqline.getProtocolVersion());
         final Header[] headers = httprequest.getAllHeaders();
         Assert.assertEquals(3, headers.length);
     }
 
 }