1'use strict';
2const common = require('../common');
3const assert = require('assert');
4
5if (!common.isMainThread)
6  common.skip('process.env.TZ is not intercepted in Workers');
7
8if (common.isWindows)  // Using a different TZ format.
9  common.skip('todo: test on Windows');
10
11const date = new Date('2018-04-14T12:34:56.789Z');
12
13process.env.TZ = 'Europe/Amsterdam';
14
15if (date.toString().includes('(Europe)'))
16  common.skip('not using bundled ICU');  // Shared library or --with-intl=none.
17
18if ('Sat Apr 14 2018 12:34:56 GMT+0000 (GMT)' === date.toString())
19  common.skip('missing tzdata');  // Alpine buildbots lack Europe/Amsterdam.
20
21if (date.toString().includes('(Central European Time)') ||
22    date.toString().includes('(CET)')) {
23  // The AIX and SmartOS buildbots report 2018 CEST as CET
24  // because apparently for them that's still the deep future.
25  common.skip('tzdata too old');
26}
27
28// Text representation of timezone depends on locale in environment
29assert.match(
30  date.toString(),
31  /^Sat Apr 14 2018 14:34:56 GMT\+0200 \(.+\)$/);
32
33process.env.TZ = 'Europe/London';
34assert.match(
35  date.toString(),
36  /^Sat Apr 14 2018 13:34:56 GMT\+0100 \(.+\)$/);
37
38process.env.TZ = 'Etc/UTC';
39assert.match(
40  date.toString(),
41  /^Sat Apr 14 2018 12:34:56 GMT\+0000 \(.+\)$/);
42
43// Just check that deleting the environment variable doesn't crash the process.
44// We can't really check the result of date.toString() because we don't know
45// the default time zone.
46delete process.env.TZ;
47date.toString();
48