mirror of https://github.com/tc39/test262.git
55 lines
1.7 KiB
JavaScript
55 lines
1.7 KiB
JavaScript
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// Copyright (C) 2019 Leo Balter. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-Intl.DisplayNames
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description: >
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Valid options for fallback
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info: |
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Intl.DisplayNames ([ locales [ , options ]])
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1. If NewTarget is undefined, throw a TypeError exception.
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2. Let displayNames be ? OrdinaryCreateFromConstructor(NewTarget, "%DisplayNamesPrototype%",
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« [[InitializedDisplayNames]], [[Locale]], [[Style]], [[Type]], [[Fallback]], [[Fields]] »).
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...
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4. If options is undefined, then
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a. Let options be ObjectCreate(null).
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5. Else
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a. Let options be ? ToObject(options).
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...
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8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
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...
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11. Let style be ? GetOption(options, "style", "string", « "narrow", "short", "long" », "long").
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...
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13. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency", "weekday", "month", "quarter", "dayPeriod", "dateTimeField" », "language").
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...
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15. Let fallback be ? GetOption(options, "fallback", "string", « "code", "none" », "code").
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...
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GetOption ( options, property, type, values, fallback )
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1. Let value be ? Get(options, property).
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...
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features: [Intl.DisplayNames]
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locale: [en]
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---*/
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// results for option values verified in the tests for resolvedOptions
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var values = [
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undefined,
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'code',
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'none'
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];
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for (let valid of values) {
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let options = {
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fallback: valid
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};
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var obj = new Intl.DisplayNames('en', options);
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assert(obj instanceof Intl.DisplayNames, `instanceof check - ${valid}`);
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assert.sameValue(Object.getPrototypeOf(obj), Intl.DisplayNames.prototype, `proto check - ${valid}`);
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}
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