| // Copyright (C) 2018 Ujjwal Sharma. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-number-format-functions |
| description: > |
| Tests that the default value for the argument of |
| Intl.NumberFormat.prototype.format (value) is undefined. |
| info: | |
| 11.1.4 Number Format Functions |
| |
| 3. If value is not provided, let value be undefined. |
| 4. Let x be ? ToNumber(value). |
| ---*/ |
| |
| const nf = new Intl.NumberFormat(); |
| |
| // In most locales this is string "NaN", but there are exceptions, cf. "ليس رقم" |
| // in Arabic, "epäluku" in Finnish, "не число" in Russian, "son emas" in Uzbek etc. |
| const resultNaN = nf.format(NaN); |
| |
| assert.sameValue(nf.format(), resultNaN); |
| assert.sameValue(nf.format(undefined), resultNaN); |
