1 files changed, 18 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/Temporal/ZonedDateTime/prototype/toLocaleString/options-timeZone.js b/js/src/tests/test262/intl402/Temporal/ZonedDateTime/prototype/toLocaleString/options-timeZone.js
new file mode 100644
index 0000000000..034c485084
--- /dev/null
+++ b/js/src/tests/test262/intl402/Temporal/ZonedDateTime/prototype/toLocaleString/options-timeZone.js
@@ -0,0 +1,18 @@
+// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
+// Copyright (C) 2023 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.zoneddatetime.prototype.tolocalestring
+description: >
+  Options must not have a timeZone property, even if it agrees with the
+  instance's time zone
+features: [Temporal]
+---*/
+
+const datetime = new Temporal.ZonedDateTime(0n, "UTC");
+
+assert.throws(TypeError, () => datetime.toLocaleString("en-US", { timeZone: "Europe/Vienna" }), "timeZone option disallowed");
+assert.throws(TypeError, () => datetime.toLocaleString("en-US", { timeZone: "UTC" }), "timeZone option disallowed even if it agrees with instance's time zone");
+
+reportCompare(0, 0);