MyMongodb/node_modules/jquery/test/unit/dimensions.js

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if ( jQuery.fn.width ) {

module("dimensions", { teardown: moduleTeardown });

var pass = function( val ) {
	return val;
};

var fn = function( val ) {
	return function() {
		return val;
	};
};

/*
	======== local reference =======
	pass and fn can be used to test passing functions to setters
	See testWidth below for an example

	pass( value );
		This function returns whatever value is passed in

	fn( value );
		Returns a function that returns the value
*/

var testWidth = function( val ) {
	expect(9);

	var $div = jQuery("#nothiddendiv");
	$div.width( val(30) );
	equal($div.width(), 30, "Test set to 30 correctly");
	$div.hide();
	equal($div.width(), 30, "Test hidden div");
	$div.show();
	$div.width( val(-1) ); // handle negative numbers by setting to 0 #11604
	equal($div.width(), 0, "Test negative width normalized to 0");
	$div.css("padding", "20px");
	equal($div.width(), 0, "Test padding specified with pixels");
	$div.css("border", "2px solid #fff");
	equal($div.width(), 0, "Test border specified with pixels");

	$div.css({ "display": "", "border": "", "padding": "" });

	jQuery("#nothiddendivchild").css({ "width": 20, "padding": "3px", "border": "2px solid #fff" });
	equal(jQuery("#nothiddendivchild").width(), 20, "Test child width with border and padding");
	jQuery("#nothiddendiv, #nothiddendivchild").css({ "border": "", "padding": "", "width": "" });

	var blah = jQuery("blah");
	equal( blah.width( val(10) ), blah, "Make sure that setting a width on an empty set returns the set." );
	equal( blah.width(), null, "Make sure 'null' is returned on an empty set");

	equal( jQuery(window).width(), document.documentElement.clientWidth, "Window width is equal to width reported by window/document." );

	QUnit.expectJqData( $div[0], "olddisplay" );
};

test("width()", function() {
	testWidth( pass );
});