code: @Test public void testDefaultRequestConstructors(){
    HttpRequest request=new BasicHttpRequest("WHATEVER","/");
    Assert.assertNotNull(request.getProtocolVersion());
    Assert.assertEquals("WHATEVER",request.getRequestLine().getMethod());
    Assert.assertEquals("/",request.getRequestLine().getUri());
    request=new BasicHttpRequest("GET","/",HttpVersion.HTTP_1_0);
    Assert.assertEquals(HttpVersion.HTTP_1_0,request.getProtocolVersion());
    Assert.assertEquals("GET",request.getRequestLine().getMethod());
    Assert.assertEquals("/",request.getRequestLine().getUri());
    try {
      new BasicHttpRequest(null,null);
      Assert.fail("IllegalArgumentException should have been thrown");
    }
   catch (  IllegalArgumentException ex) {
    }
    try {
      new BasicHttpRequest("GET",null);
      Assert.fail("IllegalArgumentException should have been thrown");
    }
   catch (  IllegalArgumentException ex) {
    }
    try {
      new BasicHttpRequest(null);
      Assert.fail("IllegalArgumentException should have been thrown");
    }
   catch (  IllegalArgumentException ex) {
    }
  }
  