| // Copyright (C) 2021 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-Intl.DisplayNames |
| description: > |
| Return abrupt completion from an invalid fallback option |
| info: | |
| Intl.DisplayNames ( locales , options ) |
| |
| 1. If NewTarget is undefined, throw a TypeError exception. |
| 2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%", |
| « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »). |
| ... |
| 4. Let options be ? ToObject(options). |
| ... |
| 8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit"). |
| ... |
| 12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », "language"). |
| 13. If type is undefined, throw a TypeError exception. |
| ... |
| 24. Let languageDisplay be ? GetOption(options, "languageDisplay", "string", « "dialect", "standard" », "dialect"). |
| ... |
| |
| GetOption ( options, property, type, values, fallback ) |
| |
| 1. Let value be ? Get(options, property). |
| 2. If value is not undefined, then |
| ... |
| c. If type is "string", then |
| i. Let value be ? ToString(value). |
| d. If values is not undefined, then |
| i. If values does not contain an element equal to value, throw a RangeError exception. |
| ... |
| features: [Intl.DisplayNames-v2] |
| locale: [en] |
| ---*/ |
| |
| assert.throws(RangeError, () => { |
| new Intl.DisplayNames('en', {languageDisplay: 'err', type: 'language'}); |
| }, 'err'); |
| |
| assert.throws(RangeError, () => { |
| new Intl.DisplayNames('en', {languageDisplay: 'standar', type: 'language'}); |
| }, 'standar, not standard'); |
| |
| assert.throws(RangeError, () => { |
| new Intl.DisplayNames('en', {languageDisplay: null, type: 'language'}); |
| }, 'null'); |
| |
| assert.throws(RangeError, () => { |
| new Intl.DisplayNames('en', {languageDisplay: '', type: 'language'}); |
| }, 'the empty string'); |
| |
| assert.throws(RangeError, () => { |
| new Intl.DisplayNames('en', {languageDisplay: ['dialect', 'standard'], type: 'language'}); |
| }, 'an array with the valid options is not necessarily valid'); |