1 files changed, 40 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Temporal/ZonedDateTime/prototype/toString/roundingmode-halfEven.js b/js/src/tests/test262/built-ins/Temporal/ZonedDateTime/prototype/toString/roundingmode-halfEven.js
new file mode 100644
index 0000000000..086ce192d4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Temporal/ZonedDateTime/prototype/toString/roundingmode-halfEven.js
@@ -0,0 +1,40 @@
+// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.zoneddatetime.prototype.tostring
+description: halfEven value for roundingMode option
+features: [Temporal]
+---*/
+
+const datetime = new Temporal.ZonedDateTime(1_000_000_000_123_987_500n, "UTC");
+
+const result1 = datetime.toString({ smallestUnit: "microsecond", roundingMode: "halfEven" });
+assert.sameValue(result1, "2001-09-09T01:46:40.123988+00:00[UTC]",
+  "roundingMode is halfEven (with 6 digits from smallestUnit)");
+
+const result2 = datetime.toString({ fractionalSecondDigits: 6, roundingMode: "halfEven" });
+assert.sameValue(result2, "2001-09-09T01:46:40.123988+00:00[UTC]",
+  "roundingMode is halfEven (with 6 digits from fractionalSecondDigits)");
+
+const result3 = datetime.toString({ smallestUnit: "millisecond", roundingMode: "halfEven" });
+assert.sameValue(result3, "2001-09-09T01:46:40.124+00:00[UTC]",
+  "roundingMode is halfEven (with 3 digits from smallestUnit)");
+
+const result4 = datetime.toString({ fractionalSecondDigits: 3, roundingMode: "halfEven" });
+assert.sameValue(result4, "2001-09-09T01:46:40.124+00:00[UTC]",
+  "roundingMode is halfEven (with 3 digits from fractionalSecondDigits)");
+
+const result5 = datetime.toString({ smallestUnit: "second", roundingMode: "halfEven" });
+assert.sameValue(result5, "2001-09-09T01:46:40+00:00[UTC]",
+  "roundingMode is halfEven (with 0 digits from smallestUnit)");
+
+const result6 = datetime.toString({ fractionalSecondDigits: 0, roundingMode: "halfEven" });
+assert.sameValue(result6, "2001-09-09T01:46:40+00:00[UTC]",
+  "roundingMode is halfEven (with 0 digits from fractionalSecondDigits)");
+
+const result7 = datetime.toString({ smallestUnit: "minute", roundingMode: "halfEven" });
+assert.sameValue(result7, "2001-09-09T01:47+00:00[UTC]", "roundingMode is halfEven (round to minute)");
+
+reportCompare(0, 0);