1 files changed, 34 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/yearMonthFromFields/monthcode-invalid.js b/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/yearMonthFromFields/monthcode-invalid.js
new file mode 100644
index 0000000000..41ca759058
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Temporal/Calendar/prototype/yearMonthFromFields/monthcode-invalid.js
@@ -0,0 +1,34 @@
+// |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: Throw RangeError for an out-of-range, conflicting, or ill-formed monthCode
+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");
+
+["m1", "M1", "m01"].forEach((monthCode) => {
+  assert.throws(RangeError, () => cal.yearMonthFromFields({ year: 2021, monthCode }),
+    `monthCode '${monthCode}' is not well-formed`);
+});
+
+assert.throws(RangeError, () => cal.yearMonthFromFields({ year: 2021, month: 12, monthCode: "M11" }),
+     "monthCode and month conflict");
+
+["M00", "M19", "M99", "M13"].forEach((monthCode) => {
+  assert.throws(RangeError, () => cal.yearMonthFromFields({ year: 2021, monthCode }),
+    `monthCode '${monthCode}' is not valid for year 2021`);
+});
+
+reportCompare(0, 0);