1 files changed, 45 insertions, 0 deletions
diff --git a/js/src/tests/non262/Intl/DateTimeFormat/formatRange-timeZoneName-matches-format.js b/js/src/tests/non262/Intl/DateTimeFormat/formatRange-timeZoneName-matches-format.js
new file mode 100644
index 0000000000..028782c968
--- /dev/null
+++ b/js/src/tests/non262/Intl/DateTimeFormat/formatRange-timeZoneName-matches-format.js
@@ -0,0 +1,45 @@
+// |reftest| skip-if(!this.hasOwnProperty("Intl"))
+
+// Test DateTimeFormat.prototype.format and DateTimeFormat.prototype.formatRange
+// use the same formatting for the "timeZoneName" option.
+
+function hours(v) {
+  return v * 60 * 60 * 1000;
+}
+
+const locales = [
+  "en", "fr", "de", "es",
+  "ja", "th", "zh", "ar",
+];
+
+const timeZones = [
+  "UTC", "Etc/GMT-1", "Etc/GMT+1",
+  "Africa/Cairo",
+  "America/New_York", "America/Los_Angeles",
+  "Asia/Riyadh", "Asia/Bangkok", "Asia/Shanghai", "Asia/Tokyo",
+  "Europe/Berlin", "Europe/London", "Europe/Madrid", "Europe/Paris",
+];
+
+const timeZoneNames = [
+  "short", "shortOffset", "shortGeneric",
+  "long", "longOffset", "longGeneric",
+];
+
+function timeZonePart(parts) {
+  return parts.filter(({type}) => type === "timeZoneName").map(({value}) => value)[0];
+}
+
+for (let locale of locales) {
+  for (let timeZone of timeZones) {
+    for (let timeZoneName of timeZoneNames) {
+      let dtf = new Intl.DateTimeFormat(locale, {timeZone, timeZoneName, hour: "numeric"});
+
+      let formatTimeZone = timeZonePart(dtf.formatToParts(0));
+      let formatRangeTimeZone = timeZonePart(dtf.formatRangeToParts(0, hours(1)));
+      assertEq(formatRangeTimeZone, formatTimeZone);
+    }
+  }
+}
+
+if (typeof reportCompare === "function")
+  reportCompare(0, 0, "ok");