Fix effects test suite to account for opacity being removed rather than explicity set to 1

Author: timmywil

test/unit/effects.js

@@ -726,6 +726,9 @@ jQuery.each( {
 			var f_h = f( elem, "height" );
 			var t_o = t( elem, "opacity" );
 			var f_o = f( elem, "opacity" );
+			if ( f_o === "" ) {
+				f_o = 1;
+			}
 
 			var num = 0;
 
@@ -759,7 +762,7 @@ jQuery.each( {
 				if ( t_h == "hide"||t_h == "show" )
 					ok(f_h === "" ? elem.style.height === f_h : elem.style.height.indexOf(f_h) === 0, "Height must be reset to " + f_h + ": " + elem.style.height);
 
-				var cur_o = jQuery.style(elem, "opacity");
+				var cur_o = jQuery.css(elem, "opacity");
 
 				if ( t_o == "hide" || t_o == "show" )
 					equals(cur_o, f_o, "Opacity must be reset to " + f_o + ": " + cur_o);