Merging upstream version 127.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 27 insertions, 0 deletions

diff --git a/js/src/tests/test262/intl402/Temporal/ZonedDateTime/prototype/weekOfYear/non-iso-week-of-year.js b/js/src/tests/test262/intl402/Temporal/ZonedDateTime/prototype/weekOfYear/non-iso-week-of-year.js
new file mode 100644
index 0000000000..79769e6d19
--- /dev/null
+++ b/js/src/tests/test262/intl402/Temporal/ZonedDateTime/prototype/weekOfYear/non-iso-week-of-year.js
@@ -0,0 +1,27 @@
+// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
+// Copyright (C) 2024 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.zoneddatetime.prototype.weekofyear
+description: >
+  Temporal.ZonedDateTime.prototype.weekOfYear returns undefined for all 
+  non-ISO calendars without a well-defined week numbering system.
+features: [Temporal]
+---*/
+
+// Gregorian calendar has a well defined week-numbering system.
+
+let calendar = new Temporal.Calendar("gregory");
+
+// Epoch Nanoseconds for new Temporal.PlainDateTime(2024, 1, 1, 12, 34, 56, 987, 654, 321, calendar);
+const date = new Temporal.ZonedDateTime(1_704_112_496_987_654_321n, "UTC", calendar);
+
+assert.sameValue(date.weekOfYear, 1);
+
+calendar = new Temporal.Calendar("hebrew");
+const nonisodate = new Temporal.ZonedDateTime(1_704_112_496_987_654_321n, "UTC", calendar);
+
+assert.sameValue(nonisodate.weekOfYear, undefined);
+
+reportCompare(0, 0);