/*
    * ====================================================================
    * 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 java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  
  import org.apache.http.HttpEntity;
  import org.apache.http.util.EntityUtils;
  import org.junit.Assert;
  import org.junit.Test;
  
  /**
   * Unit tests for {@link EntityTemplate}.
   */
  public class TestEntityTemplate {
  
      @Test
      public void testBasics() throws Exception {
  
          final HttpEntity httpentity = new EntityTemplate(new ContentProducer() {
  
              @Override
              public void writeTo(final OutputStream outStream) throws IOException {
                  outStream.write('a');
              }
  
          });
  
          Assert.assertEquals(-1, httpentity.getContentLength());
          Assert.assertTrue(httpentity.isRepeatable());
          Assert.assertFalse(httpentity.isStreaming());
      }
  
      @Test
      public void testIllegalConstructor() throws Exception {
          try {
              new EntityTemplate(null);
              Assert.fail("IllegalArgumentException should have been thrown");
          } catch (final IllegalArgumentException ex) {
              // expected
          }
      }
  
      @Test
      public void testWriteTo() throws Exception {
          final HttpEntity httpentity = new EntityTemplate(new ContentProducer() {
  
              @Override
              public void writeTo(final OutputStream outStream) throws IOException {
                  outStream.write('a');
              }
  
          });
  
          final ByteArrayOutputStream out = new ByteArrayOutputStream();
          httpentity.writeTo(out);
          final byte[] bytes2 = out.toByteArray();
          Assert.assertNotNull(bytes2);
          Assert.assertEquals(1, bytes2.length);
  
          try {
              httpentity.writeTo(null);
              Assert.fail("IllegalArgumentException should have been thrown");
          } catch (final IllegalArgumentException ex) {
              // expected
          }
      }
  
      @Test
      public void testgetContent() throws Exception {
          final HttpEntity httpentity = new EntityTemplate(new ContentProducer() {
 
             @Override
             public void writeTo(final OutputStream outStream) throws IOException {
                 outStream.write('a');
             }
 
         });
         final InputStream inStream = httpentity.getContent();
         Assert.assertNotNull(inStream);
         final String s = EntityUtils.toString(httpentity);
         Assert.assertEquals("a", s);
     }
 
 }