make date validator use the Date object

Author: bolu

src/validators.js

@@ -34,11 +34,14 @@ foreach({
     return _null;
   },
 
-  'date': function(value, min, max) {
-    if (value.match(/^\d\d?\/\d\d?\/\d\d\d\d$/)) {
-      return _null;
-    }
-    return "Value is not a date. (Expecting format: 12/31/2009).";
+  'date': function(value) {
+    var fields = /^(\d\d?)\/(\d\d?)\/(\d\d\d\d)$/.exec(value);
+    var date = fields ? new Date(fields[3], fields[1]-1, fields[2]) : 0;
+    return (date &&
+            date.getFullYear() == fields[3] &&
+            date.getMonth() == fields[1]-1 &&
+            date.getDate() == fields[2]) ?
+              _null : "Value is not a date. (Expecting format: 12/31/2009).";
   },
 
   'ssn': function(value) {

test/ValidatorsTest.js

@@ -46,8 +46,19 @@ ValidatorTest.prototype.testInteger = function() {
 
 ValidatorTest.prototype.testDate = function() {
   var error = "Value is not a date. (Expecting format: 12/31/2009).";
-  assertEquals(angular.validator.date("ab"), error);
-  assertEquals(angular.validator.date("12/31/2009"), null);
+  expect(angular.validator.date("ab")).toEqual(error);
+  expect(angular.validator.date("12/31/2009")).toEqual(null);
+  expect(angular.validator.date("1/1/1000")).toEqual(null);
+  expect(angular.validator.date("12/31/9999")).toEqual(null);
+  expect(angular.validator.date("2/29/2004")).toEqual(null);
+  expect(angular.validator.date("2/29/2000")).toEqual(null);
+  expect(angular.validator.date("2/29/2100")).toEqual(error);
+  expect(angular.validator.date("2/29/2003")).toEqual(error);
+  expect(angular.validator.date("41/1/2009")).toEqual(error);
+  expect(angular.validator.date("13/1/2009")).toEqual(error);
+  expect(angular.validator.date("1/1/209")).toEqual(error);
+  expect(angular.validator.date("1/32/2010")).toEqual(error);
+  expect(angular.validator.date("001/031/2009")).toEqual(error);
 };
 
 ValidatorTest.prototype.testPhone = function() {