code: @Test public void testContentEncoding() throws Exception {
    BasicHttpEntity httpentity=new BasicHttpEntity();
    httpentity.setContentEncoding(new BasicHeader(HTTP.CONTENT_ENCODING,"gzip"));
    Assert.assertEquals(HTTP.CONTENT_ENCODING,httpentity.getContentEncoding().getName());
    Assert.assertEquals("gzip",httpentity.getContentEncoding().getValue());
    httpentity.setContentEncoding("gzip");
    Assert.assertEquals(HTTP.CONTENT_ENCODING,httpentity.getContentEncoding().getName());
    Assert.assertEquals("gzip",httpentity.getContentEncoding().getValue());
    httpentity.setContentEncoding((Header)null);
    Assert.assertNull(httpentity.getContentEncoding());
    httpentity.setContentEncoding((String)null);
    Assert.assertNull(httpentity.getContentEncoding());
  }
  