jquery-ui/tests/unit/dialog/dialog_test_helpers.js

TestHelpers.dialog = {
	drag: function(el, handle, dx, dy) {
		var d = el.dialog('widget');
		//this mouseover is to work around a limitation in resizable
		//TODO: fix resizable so handle doesn't require mouseover in order to be used
		$(handle, d).simulate("mouseover");
		$(handle, d).simulate("drag", {
			dx: dx || 0,
			dy: dy || 0
		});
	},
	testDrag: function(el, dx, dy, expectedDX, expectedDY, msg) {
		var actual, expected, offsetAfter,
			d = el.dialog('widget'),
			handle = $(".ui-dialog-titlebar", d),
			offsetBefore = d.offset();

		TestHelpers.dialog.drag(el, handle, dx, dy);

		offsetAfter = d.offset();

		msg = msg ? msg + "." : "";

		actual = { left: Math.round(offsetAfter.left), top: Math.round(offsetAfter.top) },
		expected = { left: Math.round(offsetBefore.left + expectedDX), top: Math.round(offsetBefore.top + expectedDY) };
		deepEqual(actual, expected, 'dragged[' + expectedDX + ', ' + expectedDY + '] ' + msg);
	},
	shouldResize: function(el, dw, dh, msg) {
		var heightAfter, widthAfter, actual, expected,
			d = el.dialog('widget'),
			handle = $(".ui-resizable-se", d),
			heightBefore = d.height(),
			widthBefore = d.width();

		TestHelpers.dialog.drag(el, handle, 50, 50);

		heightAfter = d.height();
		widthAfter = d.width();

		msg = msg ? msg + "." : "";
		actual = { width: widthAfter, height: heightAfter },
		expected = { width: widthBefore + dw, height: heightBefore + dh };
		deepEqual(actual, expected, 'resized[' + 50 + ', ' + 50 + '] ' + msg);
	}
};