1 files changed, 25 insertions, 0 deletions
diff --git a/js/src/tests/non262/Intl/supportedValuesOf-calendar.js b/js/src/tests/non262/Intl/supportedValuesOf-calendar.js
new file mode 100644
index 0000000000..24a4ac3a57
--- /dev/null
+++ b/js/src/tests/non262/Intl/supportedValuesOf-calendar.js
@@ -0,0 +1,25 @@
+// |reftest| skip-if(!this.hasOwnProperty("Intl"))
+
+const calendars = Intl.supportedValuesOf("calendar");
+
+assertEq(new Set(calendars).size, calendars.length, "No duplicates are present");
+assertEqArray(calendars, [...calendars].sort(), "The list is sorted");
+
+const typeRE = /^[a-z0-9]{3,8}(-[a-z0-9]{3,8})*$/;
+for (let calendar of calendars) {
+  assertEq(typeRE.test(calendar), true, `${calendar} matches the 'type' production`);
+}
+
+for (let calendar of calendars) {
+  assertEq(new Intl.Locale("und", {calendar}).calendar, calendar, `${calendar} is canonicalised`);
+}
+
+for (let calendar of calendars) {
+  let obj = new Intl.DateTimeFormat("en", {calendar});
+  assertEq(obj.resolvedOptions().calendar, calendar, `${calendar} is supported by DateTimeFormat`);
+}
+
+assertEq(calendars.includes("gregory"), true, `Includes the Gregorian calendar`);
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);