1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/inLeapYear/argument-string.js b/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/inLeapYear/argument-string.js
new file mode 100644
index 0000000000..386d77fc36
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/inLeapYear/argument-string.js
@@ -0,0 +1,29 @@
+// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.calendar.prototype.inleapyear
+description: An ISO 8601 date string should be converted as input
+info: |
+  4. If Type(temporalDateLike) is not Object or temporalDateLike does not have an [[InitializedTemporalDate]] or [[InitializedTemporalYearMonth]] internal slot, then
+    a. Set temporalDateLike to ? ToTemporalDate(temporalDateLike).
+  5. Return ! IsISOLeapYear(temporalDateLike.[[ISOYear]]).
+features: [Temporal]
+---*/
+
+const cal = new Temporal.Calendar("iso8601");
+
+assert.sameValue(cal.inLeapYear("2019-03-18"), false);
+assert.sameValue(cal.inLeapYear("2020-03-18"), true);
+
+assert.sameValue(cal.inLeapYear("+002023-03-18"), false);
+assert.sameValue(cal.inLeapYear("+002024-03-18"), true);
+
+assert.sameValue(cal.inLeapYear("2019-03-18T13:00:00+00:00[UTC]"), false);
+assert.sameValue(cal.inLeapYear("2020-12-31T23:59:59+00:00[UTC]"), true);
+
+assert.sameValue(cal.inLeapYear("+002023-03-18T13:00:00+00:00[UTC]"), false);
+assert.sameValue(cal.inLeapYear("+002024-03-18T13:00:00+00:00[UTC]"), true);
+
+reportCompare(0, 0);