1 files changed, 23 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/day/month-day.js b/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/day/month-day.js
new file mode 100644
index 0000000000..b0f989774f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/day/month-day.js
@@ -0,0 +1,23 @@
+// |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.day
+description: >
+  Temporal.Calendar.prototype.day will take PlainMonthDay and return
+  the value of the day.
+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 ! ISODay(temporalDateLike).
+features: [Temporal]
+---*/
+let cal = new Temporal.Calendar("iso8601");
+
+let monthDay = new Temporal.PlainMonthDay(7, 15);
+assert.sameValue(cal.day(monthDay), 15, 'cal.day(new Temporal.PlainMonthDay(7, 15)) must return 15');
+
+reportCompare(0, 0);