1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/year/year-month.js b/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/year/year-month.js
new file mode 100644
index 0000000000..dfa6c299f4
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+++ b/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/year/year-month.js
@@ -0,0 +1,24 @@
+// |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.year
+description: >
+  Temporal.Calendar.prototype.year will take PlainYearMonth and return
+  the value of the year.
+info: |
+  1. Let calendar be the this value.
+  2. Perform ? RequireInternalSlot(calendar, [[InitializedTemporalCalendar]]).
+  3. Assert: calendar.[[Identifier]] is "iso8601".
+  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 ! ISOYear(temporalDateLike).
+features: [Temporal]
+---*/
+let cal = new Temporal.Calendar("iso8601");
+
+let yearMonth = new Temporal.PlainYearMonth(1999, 6);
+assert.sameValue(cal.year(yearMonth), 1999, 'cal.year(new Temporal.PlainYearMonth(1999, 6)) must return 1999');
+
+reportCompare(0, 0);