1 files changed, 27 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Temporal/PlainYearMonth/prototype/until/roundingincrement-as-expected.js b/js/src/tests/test262/built-ins/Temporal/PlainYearMonth/prototype/until/roundingincrement-as-expected.js
new file mode 100644
index 0000000000..e9430e2d33
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Temporal/PlainYearMonth/prototype/until/roundingincrement-as-expected.js
@@ -0,0 +1,27 @@
+// |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.plainyearmonth.prototype.until
+description: Until rounding increments work as expected
+includes: [temporalHelpers.js]
+features: [Temporal]
+---*/
+
+const earlier = new Temporal.PlainYearMonth(2019, 1);
+const later = new Temporal.PlainYearMonth(2021, 9);
+
+const laterSinceYear = earlier.until(later, { smallestUnit: "years", roundingIncrement: 4, roundingMode: "halfExpand" });
+TemporalHelpers.assertDuration(laterSinceYear,
+  /* years = */ 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, "rounds to an increment of years");
+
+const laterSinceMixed = earlier.until(later, { smallestUnit: "months", roundingIncrement: 5 });
+TemporalHelpers.assertDuration(laterSinceMixed,
+  /* years = */ 2, /* months = */ 5, 0, 0, 0, 0, 0, 0, 0, 0, "rounds to an increment of months mixed with years");
+
+const laterSinceMonth = earlier.until(later, { largestUnit: "months", smallestUnit: "months", roundingIncrement: 10 });
+TemporalHelpers.assertDuration(laterSinceMonth,
+  0, /* months = */ 30, 0, 0, 0, 0, 0, 0, 0, 0, "rounds to an increment of pure months");
+
+reportCompare(0, 0);