@Test
public void testContentEncodingNoEntity() throws Exception {

    HttpResponse response = new BasicHttpResponse(HttpVersion.HTTP_1_1, 200, "OK");
    HttpContext context = new BasicHttpContext();
    HttpResponseInterceptor interceptor = new ResponseContentEncoding();
    interceptor.process(response, context);
    HttpEntity entity = response.getEntity();
    Assert.assertNull(entity);
}