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

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

test("expando", function(){
	expect(1);

	equal(jQuery.expando !== undefined, true, "jQuery is exposing the expando");
});

function dataTests (elem) {
	var oldCacheLength, dataObj, internalDataObj, expected, actual;

	equal( jQuery.data(elem, "foo"), undefined, "No data exists initially" );
	strictEqual( jQuery.hasData(elem), false, "jQuery.hasData agrees no data exists initially" );

	dataObj = jQuery.data(elem);
	equal( typeof dataObj, "object", "Calling data with no args gives us a data object reference" );
	strictEqual( jQuery.data(elem), dataObj, "Calling jQuery.data returns the same data object when called multiple times" );

	strictEqual( jQuery.hasData(elem), false, "jQuery.hasData agrees no data exists even when an empty data obj exists" );

	dataObj["foo"] = "bar";
	equal( jQuery.data(elem, "foo"), "bar", "Data is readable by jQuery.data when set directly on a returned data object" );

	strictEqual( jQuery.hasData(elem), true, "jQuery.hasData agrees data exists when data exists" );

	jQuery.data(elem, "foo", "baz");
	equal( jQuery.data(elem, "foo"), "baz", "Data can be changed by jQuery.data" );
	equal( dataObj["foo"], "baz", "Changes made through jQuery.data propagate to referenced data object" );

	jQuery.data(elem, "foo", undefined);
	equal( jQuery.data(elem, "foo"), "baz", "Data is not unset by passing undefined to jQuery.data" );

	jQuery.data(elem, "foo", null);
	strictEqual( jQuery.data(elem, "foo"), null, "Setting null using jQuery.data works OK" );

	jQuery.data(elem, "foo", "foo1");

	jQuery.data(elem, { "bar" : "baz", "boom" : "bloz" });
	strictEqual( jQuery.data(elem, "foo"), "foo1", "Passing an object extends the data object instead of replacing it" );
	equal( jQuery.data(elem, "boom"), "bloz", "Extending the data object works" );

	jQuery._data(elem, "foo", "foo2", true);
	equal( jQuery._data(elem, "foo"), "foo2", "Setting internal data works" );
	equal( jQuery.data(elem, "foo"), "foo1", "Setting internal data does not override user data" );

	internalDataObj = jQuery._data( elem );
	ok( internalDataObj, "Internal data object exists" );
	notStrictEqual( dataObj, internalDataObj, "Internal data object is not the same as user data object" );

	strictEqual( elem.boom, undefined, "Data is never stored directly on the object" );

	jQuery.removeData(elem, "foo");
	strictEqual( jQuery.data(elem, "foo"), undefined, "jQuery.removeData removes single properties" );

	jQuery.removeData(elem);
	strictEqual( jQuery._data(elem), internalDataObj, "jQuery.removeData does not remove internal data if it exists" );

	jQuery.data(elem, "foo", "foo1");
	jQuery._data(elem, "foo", "foo2");