Fix Date.parse to handle times without timezone properly (#4249)

https://www.ecma-international.org/ecma-262/11.0/#sec-date.parse
"When the UTC offset representation is absent, date-only forms are
interpreted as a UTC time and date-time forms are interpreted as a local time."

JerryScript-DCO-1.0-Signed-off-by: Csaba Osztrogonác csaba.osztrogonac@h-lab.eu

tests/jerry/date-parse.js

@@ -98,17 +98,19 @@ assert (d == 1420070400000);
 d = Date.parse("2015-01-01");
 assert (d == 1420070400000);
 
+var timezoneOffsetMS = new Date(0).getTimezoneOffset() * 60000;
+
 d = Date.parse("2015-01T00:00");
-assert (d == 1420070400000);
+assert (d == 1420070400000 + timezoneOffsetMS);
 
 d = Date.parse("2015-01T00:00:00");
-assert (d == 1420070400000);
+assert (d == 1420070400000 + timezoneOffsetMS);
 
 d = Date.parse("2015-01T00:00:00.000");
-assert (d == 1420070400000);
+assert (d == 1420070400000 + timezoneOffsetMS);
 
 d = Date.parse("2015-01T24:00:00.000");
-assert (d == 1420156800000);
+assert (d == 1420156800000 + timezoneOffsetMS);
 
 d = Date.parse("2015-01T00:00:00.000+03:00");
 assert (d == 1420059600000);

tests/test262-esnext-excludelist.xml

@@ -695,7 +695,6 @@
   <test id="built-ins/DataView/toindex-byteoffset-sab.js"><reason></reason></test>
   <test id="built-ins/DataView/toindex-byteoffset.js"><reason></reason></test>
   <test id="built-ins/Date/parse/time-value-maximum-range.js"><reason></reason></test>
-  <test id="built-ins/Date/parse/without-utc-offset.js"><reason></reason></test>
   <test id="built-ins/Date/proto-from-ctor-realm-one.js"><reason></reason></test>
   <test id="built-ins/Date/proto-from-ctor-realm-two.js"><reason></reason></test>
   <test id="built-ins/Date/proto-from-ctor-realm-zero.js"><reason></reason></test>