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'use strict';
// Set the locale to a known good value because it affects ICU's date string
// formatting. Setting LC_ALL needs to happen before the first call to
// `icu::Locale::getDefault()` because ICU caches the result.
process.env.LC_ALL = 'C';
const common = require('../common');
const assert = require('assert');
if (!common.isMainThread)
common.skip('process.env.TZ is not intercepted in Workers');
if (common.isWindows) // Using a different TZ format.
common.skip('todo: test on Windows');
const date = new Date('2018-04-14T12:34:56.789Z');
process.env.TZ = 'Europe/Amsterdam';
if (date.toString().includes('(Europe)'))
common.skip('not using bundled ICU'); // Shared library or --with-intl=none.
if ('Sat Apr 14 2018 12:34:56 GMT+0000 (GMT)' === date.toString())
common.skip('missing tzdata'); // Alpine buildbots lack Europe/Amsterdam.
if (date.toString().includes('(Central European Time)') ||
date.toString().includes('(CET)')) {
// The AIX and SmartOS buildbots report 2018 CEST as CET
// because apparently for them that's still the deep future.
common.skip('tzdata too old');
}
assert.strictEqual(
date.toString().replace('Central European Summer Time', 'CEST'),
'Sat Apr 14 2018 14:34:56 GMT+0200 (CEST)');
process.env.TZ = 'Europe/London';
assert.strictEqual(
date.toString().replace('British Summer Time', 'BST'),
'Sat Apr 14 2018 13:34:56 GMT+0100 (BST)');
process.env.TZ = 'Etc/UTC';
assert.strictEqual(
date.toString().replace('Coordinated Universal Time', 'UTC'),
'Sat Apr 14 2018 12:34:56 GMT+0000 (UTC)');
// Just check that deleting the environment variable doesn't crash the process.
// We can't really check the result of date.toString() because we don't know
// the default time zone.
delete process.env.TZ;
date.toString();