Merging upstream version 127.0.

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

1 files changed, 26 insertions, 0 deletions

diff --git a/js/src/tests/test262/built-ins/Temporal/PlainDate/prototype/yearOfWeek/custom-calendar-weekofyear.js b/js/src/tests/test262/built-ins/Temporal/PlainDate/prototype/yearOfWeek/custom-calendar-weekofyear.js
new file mode 100644
index 0000000000..9e37a85bd7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Temporal/PlainDate/prototype/yearOfWeek/custom-calendar-weekofyear.js
@@ -0,0 +1,26 @@
+// |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.plaindate.prototype.yearofweek
+description: >
+  Temporal.PlainDate.prototype.yearOfWeek returns undefined for all 
+  custom calendars where yearOfWeek() returns undefined.
+features: [Temporal]
+---*/
+
+class CustomCalendar extends Temporal.Calendar {
+  constructor() {
+    super("iso8601");
+  }
+  yearOfWeek() {
+    return undefined;
+  }
+}
+
+const calendar = new CustomCalendar();
+const customCalendarDate = new Temporal.PlainDate(2024, 1, 1, calendar);
+assert.sameValue(customCalendarDate.yearOfWeek, undefined);
+
+reportCompare(0, 0);