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deps/v8/test/intl/number-format/unified/currency-display.js

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+// Copyright 2019 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Test defaults
+let nf = new Intl.NumberFormat();
+assertEquals(undefined, nf.resolvedOptions().currencyDisplay);
+
+nf = new Intl.NumberFormat("en");
+assertEquals(undefined, nf.resolvedOptions().currencyDisplay);
+
+nf = new Intl.NumberFormat("en", {style: "decimal"});
+assertEquals(undefined, nf.resolvedOptions().currencyDisplay);
+
+nf = new Intl.NumberFormat("en", {style: "percent"});
+assertEquals(undefined, nf.resolvedOptions().currencyDisplay);
+
+nf = new Intl.NumberFormat("en", {style: "unit", unit: "meter"});
+assertEquals(undefined, nf.resolvedOptions().currencyDisplay);
+
+nf = new Intl.NumberFormat("en", {style: "currency", currency: "TWD"});
+assertEquals("symbol", nf.resolvedOptions().currencyDisplay);
+
+const testData = [
+    ["name", "123.00 New Taiwan dollars"],
+    ["code", "TWD 123.00"],
+    ["symbol", "NT$123.00"],
+    ["narrowSymbol", "$123.00"],  // new
+];
+
+for (const [currencyDisplay, expectation] of testData) {
+  nf = new Intl.NumberFormat("en",
+      {style: 'currency', currency: "TWD", currencyDisplay});
+  assertEquals('currency', nf.resolvedOptions().style);
+  assertEquals(currencyDisplay, nf.resolvedOptions().currencyDisplay);
+  assertEquals(expectation, nf.format(123));
+}