1 files changed, 28 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Temporal/PlainMonthDay/prototype/equals/argument-number.js b/js/src/tests/test262/built-ins/Temporal/PlainMonthDay/prototype/equals/argument-number.js
new file mode 100644
index 0000000000..0edd0b0d6b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Temporal/PlainMonthDay/prototype/equals/argument-number.js
@@ -0,0 +1,28 @@
+// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.plainmonthday.prototype.equals
+description: A number is invalid in place of an ISO string for Temporal.PlainMonthDay
+features: [Temporal]
+---*/
+
+const instance = new Temporal.PlainMonthDay(11, 18);
+
+const numbers = [
+  1,
+  1118,
+  -1118,
+  12345,
+];
+
+for (const arg of numbers) {
+  assert.throws(
+    TypeError,
+    () => instance.equals(arg),
+    `A number (${arg}) is not a valid ISO string for PlainMonthDay`
+  );
+}
+
+reportCompare(0, 0);