More unit tests and a $.hasData that works for JS objects too.

diff --git a/src/data.js b/src/data.js
index c3530c8..549e73e 100644 (file)
--- a/src/data.js
+++ b/src/data.js
@@ -22,7 +22,11 @@ jQuery.extend({
        },
 
        hasData: function( elem ) {
-               return !elem.nodeType || (!!elem[ jQuery.expando ] && !jQuery.isEmptyObject(jQuery.cache[ elem[jQuery.expando] ]));
+               if (elem.nodeType) {
+                       elem = jQuery.cache[ elem[jQuery.expando] ];
+               }
+
+               return !!elem && !jQuery.isEmptyObject(elem);
        },
 
        data: function( elem, name, data ) {

diff --git a/test/unit/data.js b/test/unit/data.js
index 204d979..310cd6b 100644 (file)
--- a/test/unit/data.js
+++ b/test/unit/data.js
@@ -79,12 +79,18 @@ test("jQuery.data", function() {
 });
 
 test("jQuery.hasData", function() {
-       var div = document.createElement( "div" );
-       equals( jQuery.hasData(div), false, "No data exists" );
-       jQuery.data( div, "foo", "bar" );
-       equals( jQuery.hasData(div), true, "Data exists" );
-       jQuery.removeData( div, "foo" );
-       equals( jQuery.hasData(div), false, "Data was removed" );
+       expect(6);
+
+       function testData(obj) {
+               equals( jQuery.hasData(obj), false, "No data exists" );
+               jQuery.data( obj, "foo", "bar" );
+               equals( jQuery.hasData(obj), true, "Data exists" );
+               jQuery.removeData( obj, "foo" );
+               equals( jQuery.hasData(obj), false, "Data was removed" );
+       }
+
+       testData(document.createElement('div'));
+       testData({});
 });
 
 test(".data()", function() {