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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Tests core_date class.
*
* @package core
* @copyright 2015 Totara Learning Solutions Ltd {@link http://www.totaralms.com/}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @author Petr Skoda <petr.skoda@totaralms.com>
*/
defined('MOODLE_INTERNAL') || die();
/**
* Tests core_date class.
*
* @package core
* @copyright 2015 Totara Learning Solutions Ltd {@link http://www.totaralms.com/}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @author Petr Skoda <petr.skoda@totaralms.com>
*/
class core_date_testcase extends advanced_testcase {
public function test_get_default_php_timezone() {
$this->resetAfterTest();
$origtz = core_date::get_default_php_timezone();
$this->assertNotEmpty($origtz);
$this->setTimezone('Pacific/Auckland', 'Europe/Prague');
$this->assertSame('Europe/Prague', core_date::get_default_php_timezone());
$this->setTimezone('Pacific/Auckland', 'UTC');
$this->assertSame('UTC', core_date::get_default_php_timezone());
$this->setTimezone('Pacific/Auckland', 'GMT');
$this->assertSame('GMT', core_date::get_default_php_timezone());
}
public function test_normalise_timezone() {
$this->resetAfterTest();
$this->setTimezone('Pacific/Auckland');
$this->assertSame('Pacific/Auckland', core_date::normalise_timezone('Pacific/Auckland'));
$this->assertSame('Pacific/Auckland', core_date::normalise_timezone('99'));
$this->assertSame('Pacific/Auckland', core_date::normalise_timezone(99));
$this->assertSame('GMT', core_date::normalise_timezone('GMT'));
$this->assertSame('UTC', core_date::normalise_timezone('UTC'));
$this->assertSame('Pacific/Auckland', core_date::normalise_timezone('xxxxxxxx'));
$this->assertSame('Europe/Berlin', core_date::normalise_timezone('Central European Time'));
$this->assertSame('Etc/GMT', core_date::normalise_timezone('0'));
$this->assertSame('Etc/GMT', core_date::normalise_timezone('0.0'));
$this->assertSame('Etc/GMT-2', core_date::normalise_timezone(2));
$this->assertSame('Etc/GMT-2', core_date::normalise_timezone('2.0'));
$this->assertSame('Etc/GMT+2', core_date::normalise_timezone(-2));
$this->assertSame('Etc/GMT+2', core_date::normalise_timezone('-2.0'));
$this->assertSame('Etc/GMT+4', core_date::normalise_timezone(-4));
$this->assertSame('Etc/GMT-2', core_date::normalise_timezone('UTC+2'));
$this->assertSame('Etc/GMT+2', core_date::normalise_timezone('UTC-2'));
$this->assertSame('Etc/GMT-2', core_date::normalise_timezone('GMT+2'));
$this->assertSame('Etc/GMT+2', core_date::normalise_timezone('GMT-2'));
$this->assertSame('Etc/GMT+12', core_date::normalise_timezone(-12));
$this->assertSame('Pacific/Auckland', core_date::normalise_timezone(-13));
$this->assertSame('Pacific/Auckland', core_date::normalise_timezone(-14));
$this->assertSame('Etc/GMT-12', core_date::normalise_timezone(12));
$this->assertSame('Etc/GMT-13', core_date::normalise_timezone(13));
$this->assertSame('Etc/GMT-14', core_date::normalise_timezone(14));
$this->assertSame('Asia/Kabul', core_date::normalise_timezone(4.5));
$this->assertSame('Asia/Kolkata', core_date::normalise_timezone(5.5));
$this->assertSame('Asia/Rangoon', core_date::normalise_timezone(6.5));
$this->assertSame('Australia/Darwin', core_date::normalise_timezone('9.5'));
$this->setTimezone('99', 'Pacific/Auckland');
$this->assertSame('Pacific/Auckland', core_date::normalise_timezone('Pacific/Auckland'));
$this->assertSame('Pacific/Auckland', core_date::normalise_timezone('99'));
$this->assertSame('Pacific/Auckland', core_date::normalise_timezone(99));
$this->assertSame('GMT', core_date::normalise_timezone('GMT'));
$this->assertSame('UTC', core_date::normalise_timezone('UTC'));
$this->assertSame('Pacific/Auckland', core_date::normalise_timezone('xxxxxxxx'));
$this->assertSame('Europe/Berlin', core_date::normalise_timezone('Central European Time'));
$this->assertSame('Etc/GMT', core_date::normalise_timezone('0'));
$this->assertSame('Etc/GMT', core_date::normalise_timezone('0.0'));
$this->assertSame('Etc/GMT-2', core_date::normalise_timezone(2));
$this->assertSame('Etc/GMT-2', core_date::normalise_timezone('2.0'));
$this->assertSame('Etc/GMT+2', core_date::normalise_timezone(-2));
$this->assertSame('Etc/GMT+2', core_date::normalise_timezone('-2.0'));
$this->assertSame('Etc/GMT-2', core_date::normalise_timezone('UTC+2'));
$this->assertSame('Etc/GMT+2', core_date::normalise_timezone('UTC-2'));
$this->assertSame('Etc/GMT-2', core_date::normalise_timezone('GMT+2'));
$this->assertSame('Etc/GMT+2', core_date::normalise_timezone('GMT-2'));
$this->assertSame('Etc/GMT+12', core_date::normalise_timezone(-12));
$this->assertSame('Pacific/Auckland', core_date::normalise_timezone(-13));
$this->assertSame('Pacific/Auckland', core_date::normalise_timezone(-14));
$this->assertSame('Etc/GMT-12', core_date::normalise_timezone(12));
$this->assertSame('Etc/GMT-13', core_date::normalise_timezone(13));
$this->assertSame('Etc/GMT-14', core_date::normalise_timezone(14));
$this->setTimezone('Pacific/Auckland', 'Pacific/Auckland');
$tz = new DateTimeZone('Pacific/Auckland');
$this->assertSame('Pacific/Auckland', core_date::normalise_timezone($tz));
}
public function test_windows_conversion() {
$file = __DIR__ . '/fixtures/timezonewindows.xml';
$contents = file_get_contents($file);
preg_match_all('/<mapZone other="([^"]+)" territory="001" type="([^"]+)"\/>/', $contents, $matches, PREG_SET_ORDER);
$this->assertCount(104, $matches); // NOTE: If the file contents change edit the core_date class and update this.
foreach ($matches as $match) {
$result = core_date::normalise_timezone($match[1]);
if ($result == $match[2]) {
$this->assertSame($match[2], $result);
} else {
$data = new DateTime('now', new DateTimeZone($match[2]));
$expectedoffset = $data->getOffset();
$data = new DateTime('now', new DateTimeZone($result));
$resultoffset = $data->getOffset();
$this->assertSame($expectedoffset, $resultoffset, "$match[1] is expected to be converted to $match[2] not $result");
}
}
}
/**
* Sanity test for PHP stuff.
*/
public function test_php_gmt_offsets() {
$this->resetAfterTest();
$this->setTimezone('Pacific/Auckland', 'Pacific/Auckland');
for ($i = -12; $i < 0; $i++) {
$date = new DateTime('now', new DateTimeZone("Etc/GMT{$i}"));
$this->assertSame(- $i * 60 * 60, $date->getOffset());
$date = new DateTime('now', new DateTimeZone(core_date::normalise_timezone("GMT{$i}")));
$this->assertSame($i * 60 * 60, $date->getOffset());
$date = new DateTime('now', new DateTimeZone(core_date::normalise_timezone("UTC{$i}")));
$this->assertSame($i * 60 * 60, $date->getOffset());
}
$date = new DateTime('now', new DateTimeZone('Etc/GMT'));
$this->assertSame(0, $date->getOffset());
for ($i = 1; $i <= 12; $i++) {
$date = new DateTime('now', new DateTimeZone("Etc/GMT+{$i}"));
$this->assertSame(- $i * 60 * 60, $date->getOffset());
$date = new DateTime('now', new DateTimeZone(core_date::normalise_timezone("GMT+{$i}")));
$this->assertSame($i * 60 * 60, $date->getOffset());
$date = new DateTime('now', new DateTimeZone(core_date::normalise_timezone("UTC+{$i}")));
$this->assertSame($i * 60 * 60, $date->getOffset());
}
}
public function test_timezone_lang_strings() {
$phpzones = DateTimeZone::listIdentifiers();
$manager = get_string_manager();
foreach ($phpzones as $tz) {
$this->assertTrue($manager->string_exists(strtolower($tz), 'core_timezones'),
'String for timezone ' . strtolower($tz) . ' not found.');
}
}
public function test_get_localised_timezone() {
$this->resetAfterTest();
$this->setTimezone('Pacific/Auckland', 'Pacific/Auckland');
$result = core_date::get_localised_timezone('Pacific/Auckland');
$this->assertSame('Pacific/Auckland', $result);
$result = core_date::get_localised_timezone('99');
$this->assertSame('Server timezone (Pacific/Auckland)', $result);
$result = core_date::get_localised_timezone(99);
$this->assertSame('Server timezone (Pacific/Auckland)', $result);
$result = core_date::get_localised_timezone('Etc/GMT-1');
$this->assertSame('UTC+1', $result);
$result = core_date::get_localised_timezone('Etc/GMT+2');
$this->assertSame('UTC-2', $result);
$result = core_date::get_localised_timezone('GMT');
$this->assertSame('UTC', $result);
$result = core_date::get_localised_timezone('Etc/GMT');
$this->assertSame('UTC', $result);
}
public function test_get_list_of_timezones() {
$this->resetAfterTest();
$this->setTimezone('Pacific/Auckland', 'Pacific/Auckland');
$phpzones = DateTimeZone::listIdentifiers();
$zones = core_date::get_list_of_timezones();
$this->assertSame(count($phpzones), count($zones));
foreach ($zones as $zone => $zonename) {
$this->assertSame($zone, $zonename); // The same in English!
$this->assertContains($zone, $phpzones); // No extras expected.
}
$this->assertSame($zones, core_date::get_list_of_timezones(null, false));
$nnzones = core_date::get_list_of_timezones(null, true);
$last = $nnzones['99'];
$this->assertSame('Server timezone (Pacific/Auckland)', $last);
unset($nnzones['99']);
$this->assertSame($zones, $nnzones);
$nnzones = core_date::get_list_of_timezones('99', false);
$last = $nnzones['99'];
$this->assertSame('Server timezone (Pacific/Auckland)', $last);
unset($nnzones['99']);
$this->assertSame($zones, $nnzones);
$xxzones = core_date::get_list_of_timezones('xx', false);
$xx = $xxzones['xx'];
$this->assertSame('Invalid timezone "xx"', $xx);
unset($xxzones['xx']);
$this->assertSame($zones, $xxzones);
$xxzones = core_date::get_list_of_timezones('1', false);
$xx = $xxzones['1'];
$this->assertSame('Invalid timezone "UTC+1.0"', $xx);
unset($xxzones['1']);
$this->assertSame($zones, $xxzones);
$xxzones = core_date::get_list_of_timezones('-1.5', false);
$xx = $xxzones['-1.5'];
$this->assertSame('Invalid timezone "UTC-1.5"', $xx);
unset($xxzones['-1.5']);
$this->assertSame($zones, $xxzones);
}
public function test_get_server_timezone() {
global $CFG;
$this->resetAfterTest();
$this->setTimezone('Pacific/Auckland', 'Pacific/Auckland');
$this->assertSame('Pacific/Auckland', core_date::get_server_timezone());
$this->setTimezone('Pacific/Auckland', 'Europe/Prague');
$this->assertSame('Pacific/Auckland', core_date::get_server_timezone());
$this->setTimezone('99', 'Pacific/Auckland');
$this->assertSame('Pacific/Auckland', core_date::get_server_timezone());
$this->setTimezone(99, 'Pacific/Auckland');
$this->assertSame('Pacific/Auckland', core_date::get_server_timezone());
$this->setTimezone('Pacific/Auckland', 'Pacific/Auckland');
unset($CFG->timezone);
$this->assertSame('Pacific/Auckland', core_date::get_server_timezone());
// Admin should fix the settings.
$this->setTimezone('xxx/zzzz', 'Europe/Prague');
$this->assertSame('Europe/Prague', core_date::get_server_timezone());
}
public function test_get_server_timezone_object() {
$this->resetAfterTest();
$zones = core_date::get_list_of_timezones();
foreach ($zones as $zone) {
$this->setTimezone($zone, 'Pacific/Auckland');
$tz = core_date::get_server_timezone_object();
$this->assertInstanceOf('DateTimeZone', $tz);
$this->assertSame($zone, $tz->getName());
}
}
public function test_set_default_server_timezone() {
global $CFG;
$this->resetAfterTest();
$this->setTimezone('Europe/Prague', 'Pacific/Auckland');
unset($CFG->timezone);
date_default_timezone_set('UTC');
core_date::set_default_server_timezone();
$this->assertSame('Pacific/Auckland', date_default_timezone_get());
$this->setTimezone('', 'Pacific/Auckland');
date_default_timezone_set('UTC');
core_date::set_default_server_timezone();
$this->assertSame('Pacific/Auckland', date_default_timezone_get());
$this->setTimezone('99', 'Pacific/Auckland');
date_default_timezone_set('UTC');
core_date::set_default_server_timezone();
$this->assertSame('Pacific/Auckland', date_default_timezone_get());
$this->setTimezone(99, 'Pacific/Auckland');
date_default_timezone_set('UTC');
core_date::set_default_server_timezone();
$this->assertSame('Pacific/Auckland', date_default_timezone_get());
$this->setTimezone('Europe/Prague', 'Pacific/Auckland');
$CFG->timezone = 'UTC';
core_date::set_default_server_timezone();
$this->assertSame('UTC', date_default_timezone_get());
$this->setTimezone('Europe/Prague', 'Pacific/Auckland');
$CFG->timezone = 'Australia/Perth';
core_date::set_default_server_timezone();
$this->assertSame('Australia/Perth', date_default_timezone_get());
$this->setTimezone('0', 'Pacific/Auckland');
date_default_timezone_set('UTC');
core_date::set_default_server_timezone();
$this->assertSame('Etc/GMT', date_default_timezone_get());
$this->setTimezone('1', 'Pacific/Auckland');
date_default_timezone_set('UTC');
core_date::set_default_server_timezone();
$this->assertSame('Etc/GMT-1', date_default_timezone_get());
$this->setTimezone(1, 'Pacific/Auckland');
date_default_timezone_set('UTC');
core_date::set_default_server_timezone();
$this->assertSame('Etc/GMT-1', date_default_timezone_get());
$this->setTimezone('1.0', 'Pacific/Auckland');
date_default_timezone_set('UTC');
core_date::set_default_server_timezone();
$this->assertSame('Etc/GMT-1', date_default_timezone_get());
}
public function legacyUserTimezoneProvider() {
return [
['', 'Australia/Perth'], // Fallback on default timezone.
['-13.0', 'Australia/Perth'], // Fallback on default timezone.
['-12.5', 'Etc/GMT+12'],
['-12.0', 'Etc/GMT+12'],
['-11.5', 'Etc/GMT+11'],
['-11.0', 'Etc/GMT+11'],
['-10.5', 'Etc/GMT+10'],
['-10.0', 'Etc/GMT+10'],
['-9.5', 'Etc/GMT+9'],
['-9.0', 'Etc/GMT+9'],
['-8.5', 'Etc/GMT+8'],
['-8.0', 'Etc/GMT+8'],
['-7.5', 'Etc/GMT+7'],
['-7.0', 'Etc/GMT+7'],
['-6.5', 'Etc/GMT+6'],
['-6.0', 'Etc/GMT+6'],
['-5.5', 'Etc/GMT+5'],
['-5.0', 'Etc/GMT+5'],
['-4.5', 'Etc/GMT+4'],
['-4.0', 'Etc/GMT+4'],
['-3.5', 'Etc/GMT+3'],
['-3.0', 'Etc/GMT+3'],
['-2.5', 'Etc/GMT+2'],
['-2.0', 'Etc/GMT+2'],
['-1.5', 'Etc/GMT+1'],
['-1.0', 'Etc/GMT+1'],
['-0.5', 'Etc/GMT'],
['0', 'Etc/GMT'],
['0.0', 'Etc/GMT'],
['0.5', 'Etc/GMT'],
['1.0', 'Etc/GMT-1'],
['1.5', 'Etc/GMT-1'],
['2.0', 'Etc/GMT-2'],
['2.5', 'Etc/GMT-2'],
['3.0', 'Etc/GMT-3'],
['3.5', 'Etc/GMT-3'],
['4.0', 'Etc/GMT-4'],
['4.5', 'Asia/Kabul'],
['5.0', 'Etc/GMT-5'],
['5.5', 'Asia/Kolkata'],
['6.0', 'Etc/GMT-6'],
['6.5', 'Asia/Rangoon'],
['7.0', 'Etc/GMT-7'],
['7.5', 'Etc/GMT-7'],
['8.0', 'Etc/GMT-8'],
['8.5', 'Etc/GMT-8'],
['9.0', 'Etc/GMT-9'],
['9.5', 'Australia/Darwin'],
['10.0', 'Etc/GMT-10'],
['10.5', 'Etc/GMT-10'],
['11.0', 'Etc/GMT-11'],
['11.5', 'Etc/GMT-11'],
['12.0', 'Etc/GMT-12'],
['12.5', 'Etc/GMT-12'],
['13.0', 'Etc/GMT-13'],
];
}
/**
* @dataProvider legacyUserTimezoneProvider
* @param string $tz The legacy timezone.
* @param string $expected The expected converted timezone.
*/
public function test_get_legacy_user_timezone($tz, $expected) {
$this->setTimezone('Australia/Perth', 'Australia/Perth');
$this->assertEquals($expected, core_date::get_user_timezone($tz));
}
public function test_get_user_timezone() {
global $CFG, $USER;
$this->resetAfterTest();
// Null parameter.
$this->setTimezone('Europe/Prague', 'Pacific/Auckland');
$USER->timezone = 'Pacific/Auckland';
$CFG->forcetimezone = '99';
$this->assertSame('Pacific/Auckland', core_date::get_user_timezone(null));
$this->assertSame('Pacific/Auckland', core_date::get_user_timezone());
$this->setTimezone('Europe/Prague', 'Pacific/Auckland');
$USER->timezone = 'Pacific/Auckland';
$CFG->forcetimezone = 'Europe/Berlin';
$this->assertSame('Europe/Berlin', core_date::get_user_timezone(null));
$this->assertSame('Europe/Berlin', core_date::get_user_timezone());
$this->setTimezone('Europe/Prague', 'Pacific/Auckland');
$USER->timezone = 'Pacific/Auckland';
$CFG->forcetimezone = 'xxx/yyy';
$this->assertSame('Europe/Prague', core_date::get_user_timezone(null));
$this->assertSame('Europe/Prague', core_date::get_user_timezone());
$this->setTimezone('Europe/Prague', 'Pacific/Auckland');
$USER->timezone = 'abc/def';
$CFG->forcetimezone = '99';
$this->assertSame('Europe/Prague', core_date::get_user_timezone(null));
$this->assertSame('Europe/Prague', core_date::get_user_timezone());
$this->setTimezone('xxx/yyy', 'Europe/London');
$USER->timezone = 'abc/def';
$CFG->forcetimezone = 'Europe/Berlin';
$this->assertSame('Europe/Berlin', core_date::get_user_timezone(null));
$this->assertSame('Europe/Berlin', core_date::get_user_timezone());
$this->setTimezone('xxx/yyy', 'Europe/London');
$USER->timezone = 'abc/def';
$CFG->forcetimezone = 99;
$this->assertSame('Europe/London', core_date::get_user_timezone(null));
$this->assertSame('Europe/London', core_date::get_user_timezone());
// User object parameter.
$admin = get_admin();
$this->setTimezone('Europe/London');
$USER->timezone = 'Pacific/Auckland';
$CFG->forcetimezone = '99';
$admin->timezone = 'Australia/Perth';
$this->assertSame('Australia/Perth', core_date::get_user_timezone($admin));
$this->setTimezone('Europe/Prague');
$USER->timezone = 'Pacific/Auckland';
$CFG->forcetimezone = '99';
$admin->timezone = '99';
$this->assertSame('Europe/Prague', core_date::get_user_timezone($admin));
$this->setTimezone('99', 'Europe/London');
$USER->timezone = 'Pacific/Auckland';
$CFG->forcetimezone = '99';
$admin->timezone = '99';
$this->assertSame('Europe/London', core_date::get_user_timezone($admin));
$this->setTimezone('Europe/Prague');
$USER->timezone = 'Pacific/Auckland';
$CFG->forcetimezone = '99';
$admin->timezone = 'xx/zz';
$this->assertSame('Europe/Prague', core_date::get_user_timezone($admin));
$this->setTimezone('Europe/Prague');
$USER->timezone = 'Pacific/Auckland';
$CFG->forcetimezone = '99';
unset($admin->timezone);
$this->assertSame('Europe/Prague', core_date::get_user_timezone($admin));
$this->setTimezone('Europe/Prague');
$USER->timezone = 'Pacific/Auckland';
$CFG->forcetimezone = 'Europe/Berlin';
$admin->timezone = 'Australia/Perth';
$this->assertSame('Europe/Berlin', core_date::get_user_timezone($admin));
// Other scalar parameter.
$this->setTimezone('Europe/Prague');
$CFG->forcetimezone = '99';
$USER->timezone = 'Pacific/Auckland';
$this->assertSame('Pacific/Auckland', core_date::get_user_timezone('99'));
$this->assertSame('Etc/GMT-1', core_date::get_user_timezone('1'));
$this->assertSame('Etc/GMT+1', core_date::get_user_timezone(-1));
$this->assertSame('Europe/London', core_date::get_user_timezone('Europe/London'));
$USER->timezone = '99';
$this->assertSame('Europe/Prague', core_date::get_user_timezone('99'));
$this->assertSame('Europe/London', core_date::get_user_timezone('Europe/London'));
$this->assertSame('Europe/Prague', core_date::get_user_timezone('xxx/zzz'));
$USER->timezone = 'xxz/zzz';
$this->assertSame('Europe/Prague', core_date::get_user_timezone('99'));
$this->setTimezone('99', 'Europe/Prague');
$CFG->forcetimezone = '99';
$USER->timezone = 'Pacific/Auckland';
$this->assertSame('Pacific/Auckland', core_date::get_user_timezone('99'));
$this->assertSame('Europe/London', core_date::get_user_timezone('Europe/London'));
$USER->timezone = '99';
$this->assertSame('Europe/Prague', core_date::get_user_timezone('99'));
$this->assertSame('Europe/London', core_date::get_user_timezone('Europe/London'));
$this->assertSame('Europe/Prague', core_date::get_user_timezone('xxx/zzz'));
$USER->timezone = 99;
$this->assertSame('Europe/London', core_date::get_user_timezone('Europe/London'));
$this->assertSame('Europe/Prague', core_date::get_user_timezone('xxx/zzz'));
$USER->timezone = 'xxz/zzz';
$this->assertSame('Europe/Prague', core_date::get_user_timezone('99'));
$this->setTimezone('xxx', 'Europe/Prague');
$CFG->forcetimezone = '99';
$USER->timezone = 'xxx';
$this->assertSame('Europe/Prague', core_date::get_user_timezone('99'));
$this->assertSame('Europe/Prague', core_date::get_user_timezone(99));
$this->assertSame('Etc/GMT-1', core_date::get_user_timezone(1));
$this->setTimezone('Europe/Prague');
$CFG->forcetimezone = 'Pacific/Auckland';
$USER->timezone = 'Europe/London';
$this->assertSame('Pacific/Auckland', core_date::get_user_timezone(99));
$this->assertSame('Europe/Berlin', core_date::get_user_timezone('Europe/Berlin'));
// TZ object param.
$this->setTimezone('UTC');
$USER->timezone = 'Europe/London';
$CFG->forcetimezone = 99;
$tz = new DateTimeZone('Pacific/Auckland');
$this->assertSame('Pacific/Auckland', core_date::get_user_timezone($tz));
}
public function test_get_user_timezone_object() {
global $CFG, $USER;
$this->resetAfterTest();
$this->setTimezone('Pacific/Auckland');
$CFG->forcetimezone = '99';
$zones = core_date::get_list_of_timezones();
foreach ($zones as $zone) {
$USER->timezone = $zone;
$tz = core_date::get_user_timezone_object();
$this->assertInstanceOf('DateTimeZone', $tz);
$this->assertSame($zone, $tz->getName());
}
}
}