1 files changed, 38 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Temporal/ZonedDateTime/from/offset-wrong-type.js b/js/src/tests/test262/built-ins/Temporal/ZonedDateTime/from/offset-wrong-type.js
new file mode 100644
index 0000000000..157c789707
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Temporal/ZonedDateTime/from/offset-wrong-type.js
@@ -0,0 +1,38 @@
+// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
+// Copyright (C) 2021 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.zoneddatetime.from
+description: Type conversions for offset option
+info: |
+    sec-getoption step 9.a:
+      a. Set _value_ to ? ToString(_value_).
+    sec-temporal-totemporaloffset step 1:
+      1. Return ? GetOption(_normalizedOptions_, *"offset"*, « String », « *"prefer"*, *"use"*, *"ignore"*, *"reject"* », _fallback_).
+    sec-temporal-totemporalzoneddatetime step 6:
+      6. Let _offset_ be ? ToTemporalOffset(_options_, *"reject"*).
+    sec-temporal.zoneddatetime.from step 2:
+      2. If Type(_item_) is Object and _item_ has an [[InitializedTemporalZonedDateTime]] internal slot, then
+        ...
+        c. Perform ? ToTemporalOffset(_options_, *"reject"*).
+        d. Return ...
+      3. Return ? ToTemporalZonedDateTime(_item_, _options_).
+includes: [compareArray.js, temporalHelpers.js]
+features: [Temporal]
+---*/
+
+const datetime = new Temporal.ZonedDateTime(1_000_000_000_987_654_321n, "UTC");
+TemporalHelpers.checkStringOptionWrongType("offset", "reject",
+  (offset) => Temporal.ZonedDateTime.from(datetime, { offset }),
+  (result, descr) => assert.sameValue(result.epochNanoseconds, 1_000_000_000_987_654_321n, descr),
+);
+
+const timeZone = new Temporal.TimeZone("UTC");
+const propertyBag = { timeZone, offset: "+00:00", year: 2001, month: 9, day: 9, hour: 1, minute: 46, second: 40, millisecond: 987, microsecond: 654, nanosecond: 321 };
+TemporalHelpers.checkStringOptionWrongType("offset", "reject",
+  (offset) => Temporal.ZonedDateTime.from(propertyBag, { offset }),
+  (result, descr) => assert.sameValue(result.epochNanoseconds, 1_000_000_000_987_654_321n, descr),
+);
+
+reportCompare(0, 0);