mirror of https://github.com/tc39/test262.git
68 lines
1.9 KiB
JavaScript
68 lines
1.9 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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Return abrupt completion from an invalid localeMatcher option
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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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GetOption ( options, property, type, values, fallback )
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1. Let value be ? Get(options, property).
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2. If value is not undefined, then
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...
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c. If type is "string", then
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i. Let value be ? ToString(value).
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d. If values is not undefined, then
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i. If values does not contain an element equal to value, throw a RangeError exception.
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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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var options = {
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localeMatcher: 'bestfit' // not "best fit"
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};
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assert.throws(RangeError, () => {
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new Intl.DisplayNames('en', options);
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}, 'bestfit');
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options.localeMatcher = 'look up';
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assert.throws(RangeError, () => {
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new Intl.DisplayNames('en', options);
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}, 'look up');
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options.localeMatcher = null;
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assert.throws(RangeError, () => {
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new Intl.DisplayNames('en', options);
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}, 'null');
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options.localeMatcher = '';
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assert.throws(RangeError, () => {
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new Intl.DisplayNames('en', options);
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}, 'the empty string');
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// The world could burn
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options.localeMatcher = ['lookup', 'best fit'];
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assert.throws(RangeError, () => {
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new Intl.DisplayNames('en', options);
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}, 'an array with the valid options is not necessarily valid');
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