1 files changed, 57 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/Temporal/ZonedDateTime/prototype/with/offset-property-sub-minute.js b/js/src/tests/test262/intl402/Temporal/ZonedDateTime/prototype/with/offset-property-sub-minute.js
new file mode 100644
index 0000000000..5825173877
--- /dev/null
+++ b/js/src/tests/test262/intl402/Temporal/ZonedDateTime/prototype/with/offset-property-sub-minute.js
@@ -0,0 +1,57 @@
+// |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.prototype.with
+description: Fuzzy matching behaviour with UTC offsets in ISO 8601 strings with named time zones and offset option
+includes: [temporalHelpers.js]
+features: [Temporal]
+---*/
+
+const timeZone = new Temporal.TimeZone("Africa/Monrovia");
+const instance = Temporal.ZonedDateTime.from({ year: 1970, month: 1, day: 1, hour: 12, timeZone });
+assert.sameValue(instance.offset, "-00:44:30", "original offset");
+const properties = { day: 2, offset: "-00:45" };
+
+["ignore", "prefer"].forEach((offset) => {
+  const result = instance.with(properties, { offset });
+  assert.sameValue(result.epochNanoseconds, 132270_000_000_000n, `ignores new offset (offset=${offset})`);
+  assert.sameValue(result.offset, instance.offset, "offset property is unchanged");
+  TemporalHelpers.assertPlainDateTime(
+    result.toPlainDateTime(),
+    1970,
+    1,
+    "M01",
+    2,
+    12,
+    0,
+    0,
+    0,
+    0,
+    0,
+    "wall time is not shifted"
+  );
+});
+
+const result = instance.with(properties, { offset: "use" });
+assert.sameValue(result.epochNanoseconds, 132300_000_000_000n, "accepts HH:MM rounded offset (offset=use)");
+assert.sameValue(result.offset, instance.offset, "offset property is unchanged");
+TemporalHelpers.assertPlainDateTime(
+  result.toPlainDateTime(),
+  1970,
+  1,
+  "M01",
+  2,
+  12,
+  0,
+  30,
+  0,
+  0,
+  0,
+  "wall time is shifted by the difference between exact and rounded offset"
+);
+
+assert.throws(RangeError, () => instance.with(properties, { offset: "reject" }), "no fuzzy matching is done in with()");
+
+reportCompare(0, 0);