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diff --git a/deps/v8/test/intl/relative-time-format/numberingSystems.js b/deps/v8/test/intl/relative-time-format/numberingSystems.js
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+// Copyright 2018 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.
+
+// Based on https://www.ecma-international.org/ecma-402/#table-numbering-system-digits
+let testCases = [
+  ["arab", "in ١٢٣ days"], // U+0660 to U+0669
+  ["arabext", "in ۱۲۳ days"], // U+06F0 to U+06F9
+  ["bali", "in ᭑᭒᭓ days"], // U+1B50 to U+1B59
+  ["beng", "in ১২৩ days"], // U+09E6 to U+09EF
+  ["deva", "in १२३ days"], // U+0966 to U+096F
+  ["fullwide", "in １２３ days"], // U+FF10 to U+FF19
+  ["gujr", "in ૧૨૩ days"], // U+0AE6 to U+0AEF
+  ["guru", "in ੧੨੩ days"], // U+0A66 to U+0A6F
+  // U+3007, U+4E00, U+4E8C, U+4E09, U+56DB, U+4E94, U+516D, U+4E03, U+516B, U+4E5D
+  ["hanidec", "in 一二三 days"],
+  ["khmr", "in ១២៣ days"], // U+17E0 to U+17E9
+  ["knda", "in ೧೨೩ days"], // U+0CE6 to U+0CEF
+  ["laoo", "in ໑໒໓ days"], // U+0ED0 to U+0ED9
+  ["latn", "in 123 days"], // U+0030 to U+0039
+  ["limb", "in ᥇᥈᥉ days"], // U+1946 to U+194F
+  ["mlym", "in ൧൨൩ days"], // U+0D66 to U+0D6F
+  ["mong", "in ᠑᠒᠓ days"], // U+1810 to U+1819
+  ["mymr", "in ၁၂၃ days"], // U+1040 to U+1049
+  ["orya", "in ୧୨୩ days"], // U+0B66 to U+0B6F
+  ["tamldec", "in ௧௨௩ days"], // U+0BE6 to U+0BEF
+  ["telu", "in ౧౨౩ days"], // U+0C66 to U+0C6F
+  ["thai", "in ๑๒๓ days"], // U+0E50 to U+0E59
+  ["tibt", "in ༡༢༣ days"], // U+0F20 to U+0F29
+];
+
+for ([numberingSystem, expected] of testCases) {
+  let byLocale = new Intl.RelativeTimeFormat("en-u-nu-" + numberingSystem);
+  let byOptions = new Intl.RelativeTimeFormat("en", { numberingSystem });
+
+  // Check the numberingSystem in the resolvedOptions matched.
+  assertEquals(numberingSystem,
+               byOptions.resolvedOptions().numberingSystem, numberingSystem);
+  assertEquals(byLocale.resolvedOptions().numberingSystem,
+               byOptions.resolvedOptions().numberingSystem, numberingSystem);
+
+  // Check the formatted result are the same as if creating by using -u-nu- in
+  // locale.
+  assertEquals(byLocale.format(123, "day"), byOptions.format(123, "day"), numberingSystem);
+  assertEquals(expected, byLocale.format(123, "day"), numberingSystem);
+}