fix(jqLite): properly toggle multiple classes

Fixes #4467
Closes #6448

Author: pkozlowski-opensource

src/jqLite.js

@@ -840,10 +840,15 @@ forEach({
   removeClass: jqLiteRemoveClass,
 
   toggleClass: function(element, selector, condition) {
-    if (isUndefined(condition)) {
-      condition = !jqLiteHasClass(element, selector);
+    if (selector) {
+      forEach(selector.split(' '), function(className){
+        var classCondition = condition;
+        if (isUndefined(classCondition)) {
+          classCondition = !jqLiteHasClass(element, className);
+        }
+        (classCondition ? jqLiteAddClass : jqLiteRemoveClass)(element, className);
+      });
     }
-    (condition ? jqLiteAddClass : jqLiteRemoveClass)(element, selector);
   },
 
   parent: function(element) {

test/jqLiteSpec.js

@@ -666,6 +666,57 @@ describe('jqLite', function() {
         expect(jqLite(b).hasClass('abc')).toEqual(false);
 
       });
+
+      it('should allow toggling multiple classes without a condition', function () {
+        var selector = jqLite([a, b]);
+        expect(selector.toggleClass('abc cde')).toBe(selector);
+        expect(jqLite(a).hasClass('abc')).toBe(true);
+        expect(jqLite(a).hasClass('cde')).toBe(true);
+        expect(jqLite(b).hasClass('abc')).toBe(true);
+        expect(jqLite(b).hasClass('cde')).toBe(true);
+
+        expect(selector.toggleClass('abc cde')).toBe(selector);
+        expect(jqLite(a).hasClass('abc')).toBe(false);
+        expect(jqLite(a).hasClass('cde')).toBe(false);
+        expect(jqLite(b).hasClass('abc')).toBe(false);
+        expect(jqLite(b).hasClass('cde')).toBe(false);
+
+        expect(selector.toggleClass('abc')).toBe(selector);
+        expect(selector.toggleClass('abc cde')).toBe(selector);
+        expect(jqLite(a).hasClass('abc')).toBe(false);
+        expect(jqLite(a).hasClass('cde')).toBe(true);
+        expect(jqLite(b).hasClass('abc')).toBe(false);
+        expect(jqLite(b).hasClass('cde')).toBe(true);
+
+        expect(selector.toggleClass('abc cde')).toBe(selector);
+        expect(jqLite(a).hasClass('abc')).toBe(true);
+        expect(jqLite(a).hasClass('cde')).toBe(false);
+        expect(jqLite(b).hasClass('abc')).toBe(true);
+        expect(jqLite(b).hasClass('cde')).toBe(false);
+      });
+
+      it('should allow toggling multiple classes with a condition', function () {
+        var selector = jqLite([a, b]);
+        selector.addClass('abc');
+        expect(selector.toggleClass('abc cde', true)).toBe(selector);
+        expect(jqLite(a).hasClass('abc')).toBe(true);
+        expect(jqLite(a).hasClass('cde')).toBe(true);
+        expect(jqLite(b).hasClass('abc')).toBe(true);
+        expect(jqLite(b).hasClass('cde')).toBe(true);
+
+        selector.removeClass('abc');
+        expect(selector.toggleClass('abc cde', false)).toBe(selector);
+        expect(jqLite(a).hasClass('abc')).toBe(false);
+        expect(jqLite(a).hasClass('cde')).toBe(false);
+        expect(jqLite(b).hasClass('abc')).toBe(false);
+        expect(jqLite(b).hasClass('cde')).toBe(false);
+      });
+
+      it('should not break for null / undefined selectors', function () {
+        var selector = jqLite([a, b]);
+        expect(selector.toggleClass(null)).toBe(selector);
+        expect(selector.toggleClass(undefined)).toBe(selector);
+      });
     });