/*
    * ====================================================================
    * 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.entity;
  
  import java.io.ByteArrayOutputStream;
  
  import org.apache.http.Consts;
  import org.apache.http.protocol.HTTP;
  import org.apache.http.util.EntityUtils;
  import org.junit.Assert;
  import org.junit.Test;
  
  /**
   * Unit tests for {@link HttpEntityWrapper}.
   *
   */
  public class TestHttpEntityWrapper {
  
      @Test
      public void testBasics() throws Exception {
          final String s = "Message content";
          final StringEntity httpentity = new StringEntity(s, ContentType.TEXT_PLAIN);
          httpentity.setContentEncoding(HTTP.IDENTITY_CODING);
          final HttpEntityWrapper wrapped = new HttpEntityWrapper(httpentity);
  
          Assert.assertEquals(httpentity.getContentLength(), wrapped.getContentLength());
          Assert.assertEquals(httpentity.getContentType(), wrapped.getContentType());
          Assert.assertEquals(httpentity.getContentEncoding(), wrapped.getContentEncoding());
          Assert.assertEquals(httpentity.isChunked(), wrapped.isChunked());
          Assert.assertEquals(httpentity.isRepeatable(), wrapped.isRepeatable());
          Assert.assertEquals(httpentity.isStreaming(), wrapped.isStreaming());
          Assert.assertNotNull(wrapped.getContent());
      }
  
      @Test
      public void testIllegalConstructor() throws Exception {
          try {
              new HttpEntityWrapper(null);
              Assert.fail("IllegalArgumentException should have been thrown");
          } catch (final IllegalArgumentException ex) {
              // expected
          }
      }
  
      @Test
      public void testWriteTo() throws Exception {
          final String s = "Message content";
          final byte[] bytes = s.getBytes(Consts.ISO_8859_1);
          final StringEntity httpentity = new StringEntity(s);
          final HttpEntityWrapper wrapped = new HttpEntityWrapper(httpentity);
  
          ByteArrayOutputStream out = new ByteArrayOutputStream();
          wrapped.writeTo(out);
          byte[] bytes2 = out.toByteArray();
          Assert.assertNotNull(bytes2);
          Assert.assertEquals(bytes.length, bytes2.length);
          for (int i = 0; i < bytes.length; i++) {
              Assert.assertEquals(bytes[i], bytes2[i]);
          }
  
          out = new ByteArrayOutputStream();
          wrapped.writeTo(out);
          bytes2 = out.toByteArray();
          Assert.assertNotNull(bytes2);
          Assert.assertEquals(bytes.length, bytes2.length);
          for (int i = 0; i < bytes.length; i++) {
              Assert.assertEquals(bytes[i], bytes2[i]);
          }
  
          try {
              wrapped.writeTo(null);
              Assert.fail("IllegalArgumentException should have been thrown");
          } catch (final IllegalArgumentException ex) {
              // expected
         }
     }
 
     @Test
     public void testConsumeContent() throws Exception {
         final String s = "Message content";
         final StringEntity httpentity = new StringEntity(s);
         final HttpEntityWrapper wrapped = new HttpEntityWrapper(httpentity);
         EntityUtils.consume(wrapped);
         EntityUtils.consume(wrapped);
     }
 
 }