TestHelpers.draggable = { // todo: remove the unreliable offset hacks unreliableOffset: $.ui.ie && ( !document.documentMode || document.documentMode < 8 ) ? 2 : 0, testDrag: function(el, handle, dx, dy, expectedDX, expectedDY, msg) { var offsetAfter, actual, expected, offsetBefore = el.offset(); $( handle ).simulate( "drag", { dx: dx, dy: dy }); offsetAfter = el.offset(); actual = { left: offsetAfter.left, top: offsetAfter.top }, expected = { left: offsetBefore.left + expectedDX, top: offsetBefore.top + expectedDY }; msg = msg ? msg + "." : ""; deepEqual(actual, expected, "dragged[" + dx + ", " + dy + "] " + msg); }, shouldMove: function(el, why) { TestHelpers.draggable.testDrag(el, el, 50, 50, 50, 50, why); }, shouldNotMove: function(el, why) { TestHelpers.draggable.testDrag(el, el, 50, 50, 0, 0, why); }, testScroll: function(el, position ) { var oldPosition = $("#main").css("position"); $("#main").css("position", position); TestHelpers.draggable.shouldMove(el, position+" parent"); $("#main").css("position", oldPosition); }, restoreScroll: function( what ) { if( what ) { $(document).scrollTop(0); $(document).scrollLeft(0); } else { $("#main").scrollTop(0); $("#main").scrollLeft(0); } }, setScroll: function( what ) { if(what) { $(document).scrollTop(100); $(document).scrollLeft(100); } else { $("#main").scrollTop(100); $("#main").scrollLeft(100); } }, border: function(el, side) { return parseInt(el.css("border-" + side + "-width"), 10) || 0; }, margin: function(el, side) { return parseInt(el.css("margin-" + side), 10) || 0; } };