1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Temporal/Duration/prototype/total/relativeto-sub-minute-offset.js b/js/src/tests/test262/built-ins/Temporal/Duration/prototype/total/relativeto-sub-minute-offset.js
new file mode 100644
index 0000000000..46f3849688
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Temporal/Duration/prototype/total/relativeto-sub-minute-offset.js
@@ -0,0 +1,29 @@
+// |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.duration.prototype.total
+description: relativeTo string accepts trailing zeroes in sub-minute UTC offset
+features: [Temporal]
+---*/
+
+const instance = new Temporal.Duration(1, 0, 0, 0, 24);
+
+let result;
+let relativeTo;
+
+const action = (relativeTo) => instance.total({ unit: "days", relativeTo });
+
+relativeTo = "1970-01-01T00:00-00:45:00[-00:45]";
+result = action(relativeTo);
+assert.sameValue(result, 366, "ISO string offset accepted with zero seconds (string)");
+
+relativeTo = { year: 1970, month: 1, day: 1, offset: "+00:45:00.000000000", timeZone: "+00:45" };
+result = action(relativeTo);
+assert.sameValue(result, 366, "ISO string offset accepted with zero seconds (property bag)");
+
+relativeTo = "1970-01-01T00:00+00:44:30.123456789[+00:45]";
+assert.throws(RangeError, () => action(relativeTo), "rounding is not accepted between ISO offset and time zone");
+
+reportCompare(0, 0);