1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Temporal/PlainTime/prototype/since/roundingmode-expand.js b/js/src/tests/test262/built-ins/Temporal/PlainTime/prototype/since/roundingmode-expand.js
new file mode 100644
index 0000000000..fc0ffaf8e0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Temporal/PlainTime/prototype/since/roundingmode-expand.js
@@ -0,0 +1,41 @@
+// |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.plaintime.prototype.since
+description: Tests calculations with roundingMode "expand".
+includes: [temporalHelpers.js]
+features: [Temporal]
+---*/
+
+const earlier = new Temporal.PlainTime(8, 22, 36, 123, 456, 789);
+const later = new Temporal.PlainTime(12, 39, 40, 987, 654, 289);
+
+const expected = [
+  ["hours", [0, 0, 0, 0, 5], [0, 0, 0, 0, -5]],
+  ["minutes", [0, 0, 0, 0, 4, 18], [0, 0, 0, 0, -4, -18]],
+  ["seconds", [0, 0, 0, 0, 4, 17, 5], [0, 0, 0, 0, -4, -17, -5]],
+  ["milliseconds", [0, 0, 0, 0, 4, 17, 4, 865], [0, 0, 0, 0, -4, -17, -4, -865]],
+  ["microseconds", [0, 0, 0, 0, 4, 17, 4, 864, 198], [0, 0, 0, 0, -4, -17, -4, -864, -198]],
+  ["nanoseconds", [0, 0, 0, 0, 4, 17, 4, 864, 197, 500], [0, 0, 0, 0, -4, -17, -4, -864, -197, -500]],
+];
+
+const roundingMode = "expand";
+
+expected.forEach(([smallestUnit, expectedPositive, expectedNegative]) => {
+  const [py, pm = 0, pw = 0, pd = 0, ph = 0, pmin = 0, ps = 0, pms = 0, pµs = 0, pns = 0] = expectedPositive;
+  const [ny, nm = 0, nw = 0, nd = 0, nh = 0, nmin = 0, ns = 0, nms = 0, nµs = 0, nns = 0] = expectedNegative;
+  TemporalHelpers.assertDuration(
+    later.since(earlier, { smallestUnit, roundingMode }),
+    py, pm, pw, pd, ph, pmin, ps, pms, pµs, pns,
+    `rounds to ${smallestUnit} (roundingMode = ${roundingMode}, positive case)`
+  );
+  TemporalHelpers.assertDuration(
+    earlier.since(later, { smallestUnit, roundingMode }),
+    ny, nm, nw, nd, nh, nmin, ns, nms, nµs, nns,
+    `rounds to ${smallestUnit} (rounding mode = ${roundingMode}, negative case)`
+  );
+});
+
+reportCompare(0, 0);