1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/Temporal/TimeZone/prototype/getOffsetStringFor/instant-string.js b/js/src/tests/test262/intl402/Temporal/TimeZone/prototype/getOffsetStringFor/instant-string.js
new file mode 100644
index 0000000000..4454bd6eb3
--- /dev/null
+++ b/js/src/tests/test262/intl402/Temporal/TimeZone/prototype/getOffsetStringFor/instant-string.js
@@ -0,0 +1,31 @@
+// |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.timezone.prototype.getoffsetstringfor
+description: Conversion of ISO date-time strings to Temporal.TimeZone instances
+features: [Temporal]
+---*/
+
+const instance = new Temporal.TimeZone("America/Vancouver");
+
+let str = "1970-01-01T00:00";
+assert.throws(RangeError, () => instance.getOffsetStringFor(str), "bare date-time string is not an instant");
+str = "1970-01-01T00:00[America/Vancouver]";
+assert.throws(RangeError, () => instance.getOffsetStringFor(str), "date-time + IANA annotation is not an instant");
+
+// The following are all valid strings so should not throw:
+
+const valids = [
+  "1970-01-01T00:00Z",
+  "1970-01-01T00:00+01:00",
+  "1970-01-01T00:00Z[America/Vancouver]",
+  "1970-01-01T00:00+01:00[America/Vancouver]",
+];
+for (const str of valids) {
+  const result = instance.getOffsetStringFor(str);
+  assert.sameValue(result, "-08:00");
+}
+
+reportCompare(0, 0);