1 files changed, 80 insertions, 0 deletions
diff --git a/js/src/tests/non262/Intl/DisplayNames/dayPeriod.js b/js/src/tests/non262/Intl/DisplayNames/dayPeriod.js
new file mode 100644
index 0000000000..cfeafdf5ee
--- /dev/null
+++ b/js/src/tests/non262/Intl/DisplayNames/dayPeriod.js
@@ -0,0 +1,80 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl')||!this.hasOwnProperty('addIntlExtras'))
+
+addMozIntlDisplayNames(this);
+
+const tests = {
+  "en": {
+    long: {
+      "am": "AM",
+      "pm": "PM",
+    },
+    short: {},
+    narrow: {},
+  },
+  "de": {
+    long: {
+      "am": "AM",
+      "pm": "PM",
+    },
+    short: {},
+    narrow: {},
+  },
+  "fr": {
+    long: {
+      "am": "AM",
+      "pm": "PM",
+    },
+    short: {},
+    narrow: {},
+  },
+  "zh": {
+    long: {
+      "am": "上午",
+      "pm": "下午",
+    },
+    short: {},
+    narrow: {},
+  },
+};
+
+for (let [locale, localeTests] of Object.entries(tests)) {
+  let defaultCalendar = new Intl.DateTimeFormat(locale).resolvedOptions().calendar;
+
+  for (let [style, styleTests] of Object.entries(localeTests)) {
+    let dn = new Intl.DisplayNames(locale, {type: "dayPeriod", style});
+
+    let resolved = dn.resolvedOptions();
+    assertEq(resolved.locale, locale);
+    assertEq(resolved.calendar, defaultCalendar);
+    assertEq(resolved.style, style);
+    assertEq(resolved.type, "dayPeriod");
+    assertEq(resolved.fallback, "code");
+
+    let inheritedTests = {...localeTests.long, ...localeTests.short, ...localeTests.narrow};
+    for (let [dayPeriod, expected] of Object.entries({...inheritedTests, ...styleTests})) {
+      assertEq(dn.of(dayPeriod), expected);
+
+      // Also works with objects.
+      assertEq(dn.of(Object(dayPeriod)), expected);
+    }
+  }
+}
+
+{
+  let dn = new Intl.DisplayNames("en", {type: "dayPeriod"});
+
+  // Performs ToString on the input and then validates the stringified result.
+  assertThrowsInstanceOf(() => dn.of(), RangeError);
+  assertThrowsInstanceOf(() => dn.of(null), RangeError);
+  assertThrowsInstanceOf(() => dn.of(Symbol()), TypeError);
+  assertThrowsInstanceOf(() => dn.of(0), RangeError);
+  assertThrowsInstanceOf(() => dn.of(1), RangeError);
+
+  // Throws an error if not one of ["am", "pm"].
+  assertThrowsInstanceOf(() => dn.of(""), RangeError);
+  assertThrowsInstanceOf(() => dn.of("AM"), RangeError);
+  assertThrowsInstanceOf(() => dn.of("PM"), RangeError);
+}
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);