1 files changed, 50 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/Temporal/TimeZone/prototype/equals/canonical-iana-names.js b/js/src/tests/test262/intl402/Temporal/TimeZone/prototype/equals/canonical-iana-names.js
new file mode 100644
index 0000000000..6be500a228
--- /dev/null
+++ b/js/src/tests/test262/intl402/Temporal/TimeZone/prototype/equals/canonical-iana-names.js
@@ -0,0 +1,50 @@
+// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
+// Copyright (C) 2023 Justin Grant. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.timezone.from
+description: Canonicalizes to evaluate time zone equality
+features: [Temporal]
+---*/
+
+const neverEqual = new Temporal.TimeZone('Asia/Tokyo');
+const zdt = new Temporal.ZonedDateTime(0n, 'America/Los_Angeles');
+const ids = [
+  ['America/Atka', 'America/Adak'],
+  ['America/Knox_IN', 'America/Indiana/Knox'],
+  ['Asia/Ashkhabad', 'Asia/Ashgabat'],
+  ['Asia/Dacca', 'Asia/Dhaka'],
+  ['Asia/Istanbul', 'Europe/Istanbul'],
+  ['Asia/Macao', 'Asia/Macau'],
+  ['Asia/Thimbu', 'Asia/Thimphu'],
+  ['Asia/Ujung_Pandang', 'Asia/Makassar'],
+  ['Asia/Ulan_Bator', 'Asia/Ulaanbaatar']
+];
+
+for (const [identifier, primaryIdentifier] of ids) {
+  const tz1 = new Temporal.TimeZone(identifier);
+  const tz2 = new Temporal.TimeZone(primaryIdentifier);
+
+  // compare objects
+  assert.sameValue(tz1.equals(tz2), true);
+  assert.sameValue(tz2.equals(tz1), true);
+  assert.sameValue(tz1.equals(neverEqual), false);
+
+  // compare string IDs
+  assert.sameValue(tz1.equals(tz2.id), true);
+  assert.sameValue(tz2.equals(tz1.id), true);
+  assert.sameValue(tz1.equals(neverEqual.id), false);
+
+  // compare ZonedDateTime instances
+  assert.sameValue(tz1.equals(zdt.withTimeZone(tz2)), true);
+  assert.sameValue(tz2.equals(zdt.withTimeZone(tz1)), true);
+  assert.sameValue(tz1.equals(zdt.withTimeZone(neverEqual)), false);
+
+  // compare IXDTF strings
+  assert.sameValue(tz1.equals(zdt.withTimeZone(tz2).toString()), true);
+  assert.sameValue(tz2.equals(zdt.withTimeZone(tz1).toString()), true);
+  assert.sameValue(tz1.equals(zdt.withTimeZone(neverEqual).toString()), false);
+}
+
+reportCompare(0, 0);