+ 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" );
+ equals( jQuery.data(elem, "boom"), "bloz", "Extending the data object works" );
+
+ jQuery._data(elem, "foo", "foo2");
+ equals( jQuery._data(elem, "foo"), "foo2", "Setting internal data works" );
+ equals( jQuery.data(elem, "foo"), "foo1", "Setting internal data does not override user data" );
+
+ var internalDataObj = jQuery.data(elem, jQuery.expando);
+ strictEqual( jQuery._data(elem), internalDataObj, "Internal data object is accessible via jQuery.expando property" );
+ 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, jQuery.expando), internalDataObj, "jQuery.removeData does not remove internal data if it exists" );
+
+ jQuery.removeData(elem, undefined, true);
+
+ strictEqual( jQuery.data(elem, jQuery.expando), undefined, "jQuery.removeData on internal data works" );
+ strictEqual( jQuery.hasData(elem), false, "jQuery.hasData agrees all data has been removed from object" );
+
+ jQuery._data(elem, "foo", "foo2");
+ strictEqual( jQuery.hasData(elem), true, "jQuery.hasData shows data exists even if it is only internal data" );
+
+ jQuery.data(elem, "foo", "foo1");
+ equals( jQuery._data(elem, "foo"), "foo2", "Setting user data does not override internal data" );
+
+ jQuery.removeData(elem, undefined, true);
+ equals( jQuery.data(elem, "foo"), "foo1", "jQuery.removeData for internal data does not remove user data" );
+
+ if (elem.nodeType) {
+ var oldCacheLength = getCacheLength();
+ jQuery.removeData(elem, "foo");
+
+ equals( getCacheLength(), oldCacheLength - 1, "Removing the last item in the data object destroys it" );
+ }
+ else {
+ jQuery.removeData(elem, "foo");
+ var expected, actual;