1 files changed, 150 insertions, 0 deletions
diff --git a/js/src/tests/non262/Intl/DisplayNames/currency.js b/js/src/tests/non262/Intl/DisplayNames/currency.js
new file mode 100644
index 0000000000..1571249106
--- /dev/null
+++ b/js/src/tests/non262/Intl/DisplayNames/currency.js
@@ -0,0 +1,150 @@
+// |reftest| skip-if(!this.hasOwnProperty('Intl'))
+
+const tests = {
+  "en": {
+    long: {
+      "USD": "US Dollar",
+      "EUR": "Euro",
+      "FRF": "French Franc",
+      "CNY": "Chinese Yuan",
+      "XAU": "Gold",
+    },
+    short: {
+      "USD": "$",
+      "EUR": "€",
+      "FRF": "FRF",
+      "CNY": "CN¥",
+      "XAU": "XAU",
+    },
+    narrow: {
+      "USD": "USD",
+      "EUR": "EUR",
+      "CNY": "CNY",
+    },
+  },
+  "de": {
+    long: {
+      "USD": "US-Dollar",
+      "EUR": "Euro",
+      "FRF": "Französischer Franc",
+      "CNY": "Renminbi Yuan",
+      "XAU": "Unze Gold",
+    },
+    short: {
+      "USD": "$",
+      "EUR": "€",
+      "FRF": "FRF",
+      "CNY": "CN¥",
+      "XAU": "XAU",
+    },
+    narrow: {
+      "CNY": "¥",
+    },
+  },
+  "fr": {
+    long: {
+      "USD": "dollar des États-Unis",
+      "EUR": "euro",
+      "FRF": "franc français",
+      "CNY": "yuan renminbi chinois",
+      "XAU": "or",
+    },
+    short: {
+      "USD": "$US",
+      "EUR": "€",
+      "FRF": "F",
+      "CNY": "CNY",
+      "XAU": "XAU",
+    },
+    narrow: {
+      "USD": "$",
+      "CNY": "¥",
+    },
+  },
+  "zh": {
+    long: {
+      "USD": "美元",
+      "EUR": "欧元",
+      "FRF": "法国法郎",
+      "CNY": "人民币",
+      "XAU": "黄金",
+    },
+    short: {
+      "USD": "US$",
+      "EUR": "€",
+      "FRF": "FRF",
+      "CNY": "¥",
+      "XAU": "XAU",
+    },
+    narrow: {
+      "USD": "$",
+    },
+  },
+};
+
+for (let [locale, localeTests] of Object.entries(tests)) {
+  for (let [style, styleTests] of Object.entries(localeTests)) {
+    let dn = new Intl.DisplayNames(locale, {type: "currency", style});
+
+    let resolved = dn.resolvedOptions();
+    assertEq(resolved.locale, locale);
+    assertEq(resolved.style, style);
+    assertEq(resolved.type, "currency");
+    assertEq(resolved.fallback, "code");
+
+    let inheritedTests = {...localeTests.long, ...localeTests.short, ...localeTests.narrow};
+    for (let [currency, expected] of Object.entries({...inheritedTests, ...styleTests})) {
+      assertEq(dn.of(currency), expected);
+
+      // Also works with objects.
+      assertEq(dn.of(Object(currency)), expected);
+    }
+  }
+}
+
+{
+  let dn = new Intl.DisplayNames("en", {type: "currency"});
+
+  // 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);
+
+  // Throws an error if |code| isn't a well-formed currency code.
+  assertThrowsInstanceOf(() => dn.of("us"), RangeError);
+  assertThrowsInstanceOf(() => dn.of("euro"), RangeError);
+  assertThrowsInstanceOf(() => dn.of("€uro"), RangeError);
+}
+
+// Test fallback behaviour.
+{
+  let dn1 = new Intl.DisplayNames("en", {type: "currency"});
+  let dn2 = new Intl.DisplayNames("en", {type: "currency", fallback: "code"});
+  let dn3 = new Intl.DisplayNames("en", {type: "currency", fallback: "none"});
+
+  assertEq(dn1.resolvedOptions().fallback, "code");
+  assertEq(dn2.resolvedOptions().fallback, "code");
+  assertEq(dn3.resolvedOptions().fallback, "none");
+
+  // "AAA" is not a registered currency code.
+  assertEq(dn1.of("AAA"), "AAA");
+  assertEq(dn2.of("AAA"), "AAA");
+  assertEq(dn3.of("AAA"), undefined);
+
+  // The returned fallback is in canonical case.
+  assertEq(dn1.of("aaa"), "AAA");
+  assertEq(dn2.of("aaa"), "AAA");
+  assertEq(dn3.of("aaa"), undefined);
+}
+
+// Test when case isn't canonical.
+{
+  let dn = new Intl.DisplayNames("en", {type: "currency", fallback: "none"});
+
+  assertEq(dn.of("USD"), "US Dollar");
+  assertEq(dn.of("usd"), "US Dollar");
+}
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);