options-fallback-abrupt-throws.js (1257B)
1 // Copyright (C) 2019 Leo Balter. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 4 /*--- 5 esid: sec-Intl.DisplayNames 6 description: > 7 Return abrupt completion from GetOption fallback 8 info: | 9 Intl.DisplayNames ( locales , options ) 10 11 1. If NewTarget is undefined, throw a TypeError exception. 12 2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%", 13 « [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »). 14 ... 15 4. Let options be ? ToObject(options). 16 ... 17 12. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency" », undefined). 18 13. If type is undefined, throw a TypeError exception. 19 ... 20 15. Let fallback be ? GetOption(options, "fallback", "string", « "code", "none" », "code"). 21 ... 22 23 GetOption ( options, property, type, values, fallback ) 24 25 1. Let value be ? Get(options, property). 26 ... 27 features: [Intl.DisplayNames] 28 locale: [en] 29 ---*/ 30 31 var options = { type: 'language' }; 32 Object.defineProperty(options, 'fallback', { 33 get() { throw new Test262Error(); }, 34 }); 35 36 assert.throws(Test262Error, () => { 37 new Intl.DisplayNames('en', options); 38 }); 39 40 reportCompare(0, 0);