1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/daysInWeek/argument-leap-second.js b/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/daysInWeek/argument-leap-second.js
new file mode 100644
index 0000000000..aa15290d2f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/daysInWeek/argument-leap-second.js
@@ -0,0 +1,29 @@
+// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.calendar.prototype.daysinweek
+description: Leap second is a valid ISO string for PlainDate
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Calendar("iso8601");
+
+let arg = "2016-12-31T23:59:60";
+const result1 = instance.daysInWeek(arg);
+assert.sameValue(
+  result1,
+  7,
+  "leap second is a valid ISO string for PlainDate"
+);
+
+arg = { year: 2016, month: 12, day: 31, hour: 23, minute: 59, second: 60 };
+const result2 = instance.daysInWeek(arg);
+assert.sameValue(
+  result2,
+  7,
+  "second: 60 is ignored in property bag for PlainDate"
+);
+
+reportCompare(0, 0);