1 files changed, 25 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/monthCode/string.js b/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/monthCode/string.js
new file mode 100644
index 0000000000..1bd095b893
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+++ b/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/monthCode/string.js
@@ -0,0 +1,25 @@
+// |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.monthCode
+description: >
+  Temporal.Calendar.prototype.monthCode will take ISO8601 string and return
+  the value of the monthCode.
+info: |
+  5. If Type(temporalDateLike) is not Object or temporalDateLike does not have
+    an [[InitializedTemporalDate]] or [[InitializedTemporalYearMonth]] internal
+    slot, then
+    a. Set temporalDateLike to ? ToTemporalDate(temporalDateLike).
+  6. Return ! ISOYear(temporalDateLike).
+features: [Temporal]
+---*/
+let cal = new Temporal.Calendar("iso8601");
+assert.sameValue(
+  cal.monthCode("2019-03-15"),
+  "M03",
+  'cal.monthCode("2019-03-15") must return "M03"'
+);
+
+reportCompare(0, 0);