fix(dateFilter): support sub-second precision on dateFilter

Author: steinjak

src/ng/filter/filters.js

@@ -320,7 +320,7 @@ dateFilter.$inject = ['$locale'];
 function dateFilter($locale) {
 
 
-  var R_ISO8601_STR = /^(\d{4})-?(\d\d)-?(\d\d)(?:T(\d\d)(?::?(\d\d)(?::?(\d\d)(?:\.(\d{3}))?)?)?(Z|([+-])(\d\d):?(\d\d)))?$/;
+  var R_ISO8601_STR = /^(\d{4})-?(\d\d)-?(\d\d)(?:T(\d\d)(?::?(\d\d)(?::?(\d\d)(?:\.(\d+))?)?)?(Z|([+-])(\d\d):?(\d\d)))?$/;
   function jsonStringToDate(string){
     var match;
     if (match = string.match(R_ISO8601_STR)) {

test/ng/filter/filtersSpec.js

@@ -270,5 +270,18 @@ describe('filters', function() {
       //no time
       expect(date('2003-09-10', format)).toEqual('2003-09 00');
     });
+
+    it('should support different degrees of subsecond precision', function () {
+      var format = 'yyyy-MM-dd';
+
+      expect(date('2003-09-10T13:02:03.12345678Z', format)).toEqual('2003-09-10');
+      expect(date('2003-09-10T13:02:03.1234567Z', format)).toEqual('2003-09-10');
+      expect(date('2003-09-10T13:02:03.123456Z', format)).toEqual('2003-09-10');
+      expect(date('2003-09-10T13:02:03.12345Z', format)).toEqual('2003-09-10');
+      expect(date('2003-09-10T13:02:03.1234Z', format)).toEqual('2003-09-10');
+      expect(date('2003-09-10T13:02:03.123Z', format)).toEqual('2003-09-10');
+      expect(date('2003-09-10T13:02:03.12Z', format)).toEqual('2003-09-10');
+      expect(date('2003-09-10T13:02:03.1Z', format)).toEqual('2003-09-10');
+    });
   });
 });