| // Copyright 2019 Google Inc. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-initializedatetimeformat |
| description: > |
| Checks error cases for the options argument to the DateTimeFormat constructor. |
| info: | |
| [[DayPeriod]] `"dayPeriod"` `"narrow"`, `"short"`, `"long"` |
| InitializeDateTimeFormat ( dateTimeFormat, locales, options ) |
| |
| ... |
| features: [Intl.DateTimeFormat-dayPeriod] |
| ---*/ |
| |
| const invalidOptions = [ |
| "", |
| "LONG", |
| " long", |
| "short ", |
| "full", |
| "numeric", |
| ]; |
| for (const dayPeriod of invalidOptions) { |
| assert.throws(RangeError, function() { |
| new Intl.DateTimeFormat("en", { dayPeriod }); |
| }, `new Intl.DateTimeFormat("en", { dayPeriod: "${dayPeriod}" }) throws RangeError`); |
| } |
