1 files changed, 25 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/yearMonthFromFields/fields-missing-properties.js b/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/yearMonthFromFields/fields-missing-properties.js
new file mode 100644
index 0000000000..528ea2998e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/yearMonthFromFields/fields-missing-properties.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.yearmonthfromfields
+description: Temporal.Calendar.prototype.yearMonthFromFields will throw TypeError with incorrect input data type.
+info: |
+  1. Let calendar be the this value.
+  2. Perform ? RequireInternalSlot(calendar, [[InitializedTemporalCalendar]]).
+  3. Assert: calendar.[[Identifier]] is "iso8601".
+  4. If Type(fields) is not Object, throw a TypeError exception.
+  5. Set options to ? GetOptionsObject(options).
+  6. Let result be ? ISOYearMonthFromFields(fields, options).
+  7. Return ? CreateTemporalYearMonth(result.[[Year]], result.[[Month]], calendar, result.[[ReferenceISODay]]).
+features: [Temporal]
+---*/
+
+const cal = new Temporal.Calendar("iso8601")
+
+assert.throws(TypeError, () => cal.yearMonthFromFields({}), "at least one correctly spelled property is required");
+assert.throws(TypeError, () => cal.yearMonthFromFields({ month: 1 }), "year is required");
+assert.throws(TypeError, () => cal.yearMonthFromFields({ year: 2021 }), "month or monthCode is required");
+
+reportCompare(0, 0);