public void ObserverField2()
{
String expected = "<script type=\"text/javascript\">" +
"new Form.Element.Observer('fieldid', 1, " +
"function(element, value) { new Ajax.Updater('elementtoupdate', " +
"'update.rails', {asynchronous:true, evalScripts:true, parameters:obtainvalue()}) })</script>";
String actual = helper.ObserveField("fieldid", 1, "update.rails", "elementtoupdate", "obtainvalue()" );
Assert.AreEqual(expected, actual);
}