1 files changed, 50 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Temporal/PlainDateTime/prototype/toZonedDateTime/multiple-instants.js b/js/src/tests/test262/built-ins/Temporal/PlainDateTime/prototype/toZonedDateTime/multiple-instants.js
new file mode 100644
index 0000000000..c8ddda8755
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Temporal/PlainDateTime/prototype/toZonedDateTime/multiple-instants.js
@@ -0,0 +1,50 @@
+// |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.plaindatetime.prototype.tozoneddatetime
+description: Checking disambiguation options for daylight savings time changes
+features: [Temporal]
+includes: [temporalHelpers.js]
+---*/
+
+const tz = TemporalHelpers.springForwardFallBackTimeZone();
+
+const dt1 = new Temporal.PlainDateTime(2000, 4, 2, 2);
+
+const zdt1 = dt1.toZonedDateTime(tz);
+const zdt1_compatible = dt1.toZonedDateTime(tz, { disambiguation: "compatible" });
+const zdt1_earlier = dt1.toZonedDateTime(tz, { disambiguation: "earlier" });
+const zdt1_later = dt1.toZonedDateTime(tz, { disambiguation: "later" });
+
+assert.sameValue(zdt1.epochNanoseconds, 954669600000000000n, "Fall DST (no disambiguation)");
+assert.sameValue(zdt1_compatible.epochNanoseconds, 954669600000000000n, "Fall DST (disambiguation = compatible)");
+assert.sameValue(zdt1_earlier.epochNanoseconds, 954666000000000000n, "Fall DST (disambiguation = earlier)");
+assert.sameValue(zdt1_later.epochNanoseconds, 954669600000000000n, "Fall DST (disambiguation = later)");
+
+assert.throws(
+  RangeError,
+  () => dt1.toZonedDateTime(tz, { disambiguation: "reject" }),
+  "Fall DST (disambiguation = reject)"
+);
+
+const dt2 = new Temporal.PlainDateTime(2000, 10, 29, 1);
+
+const zdt2 = dt2.toZonedDateTime(tz);
+const zdt2_compatible = dt2.toZonedDateTime(tz, { disambiguation: "compatible" });
+const zdt2_earlier = dt2.toZonedDateTime(tz, { disambiguation: "earlier" });
+const zdt2_later = dt2.toZonedDateTime(tz, { disambiguation: "later" });
+
+assert.sameValue(zdt2.epochNanoseconds, 972806400000000000n, "Spring DST (no disambiguation)");
+assert.sameValue(zdt2_compatible.epochNanoseconds, 972806400000000000n, "Spring DST (disambiguation = compatible)");
+assert.sameValue(zdt2_earlier.epochNanoseconds, 972806400000000000n, "Spring DST (disambiguation = earlier)");
+assert.sameValue(zdt2_later.epochNanoseconds, 972810000000000000n, "Spring DST (disambiguation = later)");
+
+assert.throws(
+  RangeError,
+  () => dt2.toZonedDateTime(tz, { disambiguation: "reject" }),
+  "Spring DST (disambiguation = reject)"
+);
+
+reportCompare(0, 0);