fix(dateparser): add extra validation constraint to days

day equal to 0 is not allowed

src/dateparser/dateparser.js

@@ -113,6 +113,10 @@ angular.module('ui.bootstrap.dateparser', [])
   // Check if date is valid for specific month (and year for February).
   // Month: 0 = Jan, 1 = Feb, etc
   function isValid(year, month, date) {
+    if (date < 1) {
+      return false;
+    }
+
     if ( month === 1 && date > 28) {
         return date === 29 && ((year % 4 === 0 && year % 100 !== 0) || year % 400 === 0);
     }

src/dateparser/test/dateparser.spec.js

@@ -84,6 +84,10 @@ describe('date parser', function () {
       expect(dateParser.parse('29.02.2013', 'dd.MM.yyyy')).toBeUndefined();
     });
 
+    it('should not work for 0 number of days', function() {
+      expect(dateParser.parse('00.02.2013', 'dd.MM.yyyy')).toBeUndefined();
+    });
+
     it('should work for 29 days in February for leap years', function() {
       expectParse('29.02.2000', 'dd.MM.yyyy', new Date(2000, 1, 29, 0));
     });