/*
    * ====================================================================
    * 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.message;
  
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.ObjectInputStream;
  import java.io.ObjectOutputStream;
  
  import org.apache.http.Header;
  import org.apache.http.HeaderElement;
  import org.junit.Assert;
  import org.junit.Test;
  
  /**
   * Unit tests for {@link Header}.
   */
  public class TestHeader {
  
      @Test
      public void testBasicConstructor() {
          final Header header = new BasicHeader("name", "value");
          Assert.assertEquals("name", header.getName());
          Assert.assertEquals("value", header.getValue());
      }
  
      @Test
      public void testBasicConstructorNullValue() {
          final Header header = new BasicHeader("name", null);
          Assert.assertEquals("name", header.getName());
          Assert.assertEquals(null, header.getValue());
      }
  
      @Test
      public void testInvalidName() {
          try {
              new BasicHeader(null, null);
              Assert.fail("IllegalArgumentException should have been thrown");
          } catch (final IllegalArgumentException ex) {
              //expected
          }
      }
  
      @Test
      public void testToString() {
          final Header header1 = new BasicHeader("name1", "value1");
          Assert.assertEquals("name1: value1", header1.toString());
          final Header header2 = new BasicHeader("name2", null);
          Assert.assertEquals("name2: ", header2.toString());
      }
  
      @Test
      public void testHeaderElements() {
          Header header = new BasicHeader("name", "element1 = value1, element2; param1 = value1, element3");
          HeaderElement[] elements = header.getElements();
          Assert.assertNotNull(elements);
          Assert.assertEquals(3, elements.length);
          Assert.assertEquals("element1", elements[0].getName());
          Assert.assertEquals("value1", elements[0].getValue());
          Assert.assertEquals("element2", elements[1].getName());
          Assert.assertEquals(null, elements[1].getValue());
          Assert.assertEquals("element3", elements[2].getName());
          Assert.assertEquals(null, elements[2].getValue());
          Assert.assertEquals(1, elements[1].getParameters().length);
  
          header = new BasicHeader("name", null);
          elements = header.getElements();
          Assert.assertNotNull(elements);
          Assert.assertEquals(0, elements.length);
      }
  
      @Test
      public void testCloning() throws Exception {
          final BasicHeader orig = new BasicHeader("name1", "value1");
         final BasicHeader clone = (BasicHeader) orig.clone();
         Assert.assertEquals(orig.getName(), clone.getName());
         Assert.assertEquals(orig.getValue(), clone.getValue());
     }
 
     @Test
     public void testSerialization() throws Exception {
         final BasicHeader orig = new BasicHeader("name1", "value1");
         final ByteArrayOutputStream outbuffer = new ByteArrayOutputStream();
         final ObjectOutputStream outStream = new ObjectOutputStream(outbuffer);
         outStream.writeObject(orig);
         outStream.close();
         final byte[] raw = outbuffer.toByteArray();
         final ByteArrayInputStream inBuffer = new ByteArrayInputStream(raw);
         final ObjectInputStream inStream = new ObjectInputStream(inBuffer);
         final BasicHeader clone = (BasicHeader) inStream.readObject();
         Assert.assertEquals(orig.getName(), clone.getName());
         Assert.assertEquals(orig.getValue(), clone.getValue());
     }
 
 }