Core - Fix incorrectly date serialization if the year is below '0100'…

… (T1025085) (#18980)

js/core/utils/date_serialization.js

@@ -61,11 +61,15 @@ function parseISO8601String(text) {
         return;
     }
 
-    const year = parts[1];
+    const year = getTimePart(parts[1]);
     const month = --parts[3];
     const day = parts[5];
     let timeZoneHour = 0;
     let timeZoneMinute = 0;
+    const correctYear = (d) => {
+        year < 100 && d.setFullYear(year);
+        return d;
+    };
 
     timeZoneHour = getTimePart(parts[14]);
     timeZoneMinute = getTimePart(parts[16]);
@@ -85,10 +89,10 @@ function parseISO8601String(text) {
     const millisecond = parseMilliseconds(parts[11]);
 
     if(parts[12]) {
-        return new Date(Date.UTC(year, month, day, hour, minute, second, millisecond));
+        return correctYear(new Date(Date.UTC(year, month, day, hour, minute, second, millisecond)));
     }
 
-    return new Date(year, month, day, hour, minute, second, millisecond);
+    return correctYear(new Date(year, month, day, hour, minute, second, millisecond));
 }
 
 const getIso8601Format = function(text, useUtc) {

testing/tests/DevExpress.core/utils.date_parser.tests.js

@@ -87,6 +87,14 @@ QUnit.test('date parsing with yyyy-MM-ddThh:mm:ss.SSSSSS', function(assert) {
     assert.equal(parsedDate.getTime(), value.getTime());
 });
 
+QUnit.test('date parsing if the year is below \'0100\' (T1025085)', function(assert) {
+    const stringValue = '0021-01-20T01:00:00';
+
+    const parsedDate = dateSerialization.dateParser(stringValue);
+
+    assert.equal(parsedDate.getFullYear(), 21);
+});
+
 QUnit.module('ISO8601 Time Only Formats', {
     beforeEach: function() {
         this.defaultForceIsoDateParsing = config().forceIsoDateParsing;