WIP - debug Firefox 47

Author: gkalpak

test/ng/directive/inputSpec.js

@@ -2752,6 +2752,8 @@ describe('input', function() {
           expect(inputElm.val()).toBe('0.3');
           expect(inputElm).toBeInvalid();
           expect(ngModel.$error.step).toBe(true);
+          expect(ngModel.$modelValue).toBeUndefined();
+          expect(ngModel.$viewValue).toBe('0.3');
           expect($rootScope.value).toBeUndefined();
         });