blob: 7e0029db0a011754cfccfdecf871018d177a4eb8 [file] [log] [blame]
// Copyright (C) 2019 Leo Balter. 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. If options is undefined, then
a. Let options be ObjectCreate(null).
5. Else
a. Let options be ? ToObject(options).
...
8. Let matcher be ? GetOption(options, "localeMatcher", "string", « "lookup", "best fit" », "best fit").
...
11. Let style be ? GetOption(options, "style", "string", « "narrow", "short", "long" », "long").
...
13. Let type be ? GetOption(options, "type", "string", « "language", "region", "script", "currency", "weekday", "month", "quarter", "dayPeriod", "dateTimeField" », "language").
...
15. Let fallback be ? GetOption(options, "fallback", "string", « "code", "none" », "code").
...
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]
locale: [en]
---*/
var options = {
fallback: 'err'
};
assert.throws(RangeError, () => {
new Intl.DisplayNames('en', options);
}, 'err');
options.fallback = 'non';
assert.throws(RangeError, () => {
new Intl.DisplayNames('en', options);
}, 'non, not none');
options.fallback = null;
assert.throws(RangeError, () => {
new Intl.DisplayNames('en', options);
}, 'null');
options.fallback = '';
assert.throws(RangeError, () => {
new Intl.DisplayNames('en', options);
}, 'the empty string');
options.fallback = ['code', 'none'];
assert.throws(RangeError, () => {
new Intl.DisplayNames('en', options);
}, 'an array with the valid options is not necessarily valid');