1 files changed, 25 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/Temporal/Calendar/prototype/yearOfWeek/non-iso-week-of-year.js b/js/src/tests/test262/intl402/Temporal/Calendar/prototype/yearOfWeek/non-iso-week-of-year.js
new file mode 100644
index 0000000000..9abf674f0f
--- /dev/null
+++ b/js/src/tests/test262/intl402/Temporal/Calendar/prototype/yearOfWeek/non-iso-week-of-year.js
@@ -0,0 +1,25 @@
+// |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.calendar.prototype.yearofweek
+description: >
+  Temporal.Calendar.prototype.yearOfWeek 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");
+const date = { month: 1, day: 1, year: 2024, calendar};
+
+assert.sameValue(calendar.yearOfWeek({...date}), 2024);
+
+calendar = new Temporal.Calendar("hebrew");
+const nonisodate = { month: 1, day: 1, year: 2024, calendar};
+
+assert.sameValue(calendar.yearOfWeek({...nonisodate}), undefined);
+
+reportCompare(0, 0);