fix(jqLite): make next() ignore non-element nodes

next() is supposed to return the next sibling *element* so it
should ignore text nodes. To achieve this, nextElementSibling()
should be used instead of nextSibling().

Author: Keyamoon

src/jqLite.js

@@ -718,7 +718,16 @@ forEach({
   },
 
   next: function(element) {
-    return element.nextSibling;
+    if (element.nextElementSibling) {
+      return element.nextElementSibling;
+    }
+
+    // IE8 doesn't have nextElementSibling
+    var elm = element.nextSibling;
+    while (elm != null && elm.nodeType !== 1) {
+      elm = elm.nextSibling;
+    }
+    return elm;
   },
 
   find: function(element, selector) {

test/jqLiteSpec.js

@@ -1,4 +1,3 @@
-
 describe('jqLite', function() {
   var scope, a, b, c;
 
@@ -1073,6 +1072,14 @@ describe('jqLite', function() {
       var i = element.find('i');
       expect(b.next()).toJqEqual([i]);
     });
+
+
+    it('should ignore non-element siblings', function() {
+      var element = jqLite('<div><b>b</b>TextNode<!-- comment node --><i>i</i></div>');
+      var b = element.find('b');
+      var i = element.find('i');
+      expect(b.next()).toJqEqual([i]);
+    });
   });