lib/tests/date_test.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * Tests core_date class.
  19  *
  20  * @package   core
  21  * @copyright 2015 Totara Learning Solutions Ltd {@link http://www.totaralms.com/}
  22  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  * @author    Petr Skoda <petr.skoda@totaralms.com>
  24  */
  25
  26 defined('MOODLE_INTERNAL') || die();
  27
  28 /**
  29  * Tests core_date class.
  30  *
  31  * @package   core
  32  * @copyright 2015 Totara Learning Solutions Ltd {@link http://www.totaralms.com/}
  33  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  34  * @author    Petr Skoda <petr.skoda@totaralms.com>
  35  */
  36 class core_date_testcase extends advanced_testcase {
  37     public function test_get_default_php_timezone() {
  38         $this->resetAfterTest();
  39
  40         $origtz = core_date::get_default_php_timezone();
  41         $this->assertNotEmpty($origtz);
  42
  43         $this->setTimezone('Pacific/Auckland', 'Europe/Prague');
  44         $this->assertSame('Europe/Prague', core_date::get_default_php_timezone());
  45
  46         $this->setTimezone('Pacific/Auckland', 'UTC');
  47         $this->assertSame('UTC', core_date::get_default_php_timezone());
  48
  49         $this->setTimezone('Pacific/Auckland', 'GMT');
  50         $this->assertSame('GMT', core_date::get_default_php_timezone());
  51     }
  52
  53     public function test_normalise_timezone() {
  54         $this->resetAfterTest();
  55
  56         $this->setTimezone('Pacific/Auckland');
  57         $this->assertSame('Pacific/Auckland', core_date::normalise_timezone('Pacific/Auckland'));
  58         $this->assertSame('Pacific/Auckland', core_date::normalise_timezone('99'));
  59         $this->assertSame('Pacific/Auckland', core_date::normalise_timezone(99));
  60         $this->assertSame('GMT', core_date::normalise_timezone('GMT'));
  61         $this->assertSame('UTC', core_date::normalise_timezone('UTC'));
  62         $this->assertSame('Pacific/Auckland', core_date::normalise_timezone('xxxxxxxx'));
  63         $this->assertSame('Europe/Berlin', core_date::normalise_timezone('Central European Time'));
  64         $this->assertSame('Etc/GMT', core_date::normalise_timezone('0'));
  65         $this->assertSame('Etc/GMT', core_date::normalise_timezone('0.0'));
  66         $this->assertSame('Etc/GMT-2', core_date::normalise_timezone(2));
  67         $this->assertSame('Etc/GMT-2', core_date::normalise_timezone('2.0'));
  68         $this->assertSame('Etc/GMT+2', core_date::normalise_timezone(-2));
  69         $this->assertSame('Etc/GMT+2', core_date::normalise_timezone('-2.0'));
  70         $this->assertSame('Etc/GMT+4', core_date::normalise_timezone(-4));
  71         $this->assertSame('Etc/GMT-2', core_date::normalise_timezone('UTC+2'));
  72         $this->assertSame('Etc/GMT+2', core_date::normalise_timezone('UTC-2'));
  73         $this->assertSame('Etc/GMT-2', core_date::normalise_timezone('GMT+2'));
  74         $this->assertSame('Etc/GMT+2', core_date::normalise_timezone('GMT-2'));
  75         $this->assertSame('Etc/GMT+12', core_date::normalise_timezone(-12));
  76         $this->assertSame('Pacific/Auckland', core_date::normalise_timezone(-13));
  77         $this->assertSame('Pacific/Auckland', core_date::normalise_timezone(-14));
  78         $this->assertSame('Etc/GMT-12', core_date::normalise_timezone(12));
  79         $this->assertSame('Etc/GMT-13', core_date::normalise_timezone(13));
  80         $this->assertSame('Etc/GMT-14', core_date::normalise_timezone(14));
  81
  82         $this->assertSame('Asia/Kabul', core_date::normalise_timezone(4.5));
  83         $this->assertSame('Asia/Kolkata', core_date::normalise_timezone(5.5));
  84         $this->assertSame('Asia/Rangoon', core_date::normalise_timezone(6.5));
  85         $this->assertSame('Australia/Darwin', core_date::normalise_timezone('9.5'));
  86
  87         $this->setTimezone('99', 'Pacific/Auckland');
  88         $this->assertSame('Pacific/Auckland', core_date::normalise_timezone('Pacific/Auckland'));
  89         $this->assertSame('Pacific/Auckland', core_date::normalise_timezone('99'));
  90         $this->assertSame('Pacific/Auckland', core_date::normalise_timezone(99));
  91         $this->assertSame('GMT', core_date::normalise_timezone('GMT'));
  92         $this->assertSame('UTC', core_date::normalise_timezone('UTC'));
  93         $this->assertSame('Pacific/Auckland', core_date::normalise_timezone('xxxxxxxx'));
  94         $this->assertSame('Europe/Berlin', core_date::normalise_timezone('Central European Time'));
  95         $this->assertSame('Etc/GMT', core_date::normalise_timezone('0'));
  96         $this->assertSame('Etc/GMT', core_date::normalise_timezone('0.0'));
  97         $this->assertSame('Etc/GMT-2', core_date::normalise_timezone(2));
  98         $this->assertSame('Etc/GMT-2', core_date::normalise_timezone('2.0'));
  99         $this->assertSame('Etc/GMT+2', core_date::normalise_timezone(-2));
 100         $this->assertSame('Etc/GMT+2', core_date::normalise_timezone('-2.0'));
 101         $this->assertSame('Etc/GMT-2', core_date::normalise_timezone('UTC+2'));
 102         $this->assertSame('Etc/GMT+2', core_date::normalise_timezone('UTC-2'));
 103         $this->assertSame('Etc/GMT-2', core_date::normalise_timezone('GMT+2'));
 104         $this->assertSame('Etc/GMT+2', core_date::normalise_timezone('GMT-2'));
 105         $this->assertSame('Etc/GMT+12', core_date::normalise_timezone(-12));
 106         $this->assertSame('Pacific/Auckland', core_date::normalise_timezone(-13));
 107         $this->assertSame('Pacific/Auckland', core_date::normalise_timezone(-14));
 108         $this->assertSame('Etc/GMT-12', core_date::normalise_timezone(12));
 109         $this->assertSame('Etc/GMT-13', core_date::normalise_timezone(13));
 110         $this->assertSame('Etc/GMT-14', core_date::normalise_timezone(14));
 111
 112         $this->setTimezone('Pacific/Auckland', 'Pacific/Auckland');
 113         $tz = new DateTimeZone('Pacific/Auckland');
 114         $this->assertSame('Pacific/Auckland', core_date::normalise_timezone($tz));
 115     }
 116
 117     public function test_windows_conversion() {
 118         $file = __DIR__ . '/fixtures/timezonewindows.xml';
 119
 120         $contents = file_get_contents($file);
 121         preg_match_all('/<mapZone other="([^"]+)" territory="001" type="([^"]+)"\/>/', $contents, $matches, PREG_SET_ORDER);
 122
 123         $this->assertCount(104, $matches); // NOTE: If the file contents change edit the core_date class and update this.
 124
 125         foreach ($matches as $match) {
 126             $result = core_date::normalise_timezone($match[1]);
 127             if ($result == $match[2]) {
 128                 $this->assertSame($match[2], $result);
 129             } else {
 130                 $data = new DateTime('now', new DateTimeZone($match[2]));
 131                 $expectedoffset = $data->getOffset();
 132                 $data = new DateTime('now', new DateTimeZone($result));
 133                 $resultoffset = $data->getOffset();
 134                 $this->assertSame($expectedoffset, $resultoffset, "$match[1] is expected to be converted to $match[2] not $result");
 135             }
 136         }
 137     }
 138
 139     /**
 140      * Sanity test for PHP stuff.
 141      */
 142     public function test_php_gmt_offsets() {
 143         $this->resetAfterTest();
 144
 145         $this->setTimezone('Pacific/Auckland', 'Pacific/Auckland');
 146
 147         for ($i = -12; $i < 0; $i++) {
 148             $date = new DateTime('now', new DateTimeZone("Etc/GMT{$i}"));
 149             $this->assertSame(- $i * 60 * 60, $date->getOffset());
 150             $date = new DateTime('now', new DateTimeZone(core_date::normalise_timezone("GMT{$i}")));
 151             $this->assertSame($i * 60 * 60, $date->getOffset());
 152             $date = new DateTime('now', new DateTimeZone(core_date::normalise_timezone("UTC{$i}")));
 153             $this->assertSame($i * 60 * 60, $date->getOffset());
 154         }
 155
 156         $date = new DateTime('now', new DateTimeZone('Etc/GMT'));
 157         $this->assertSame(0, $date->getOffset());
 158
 159         for ($i = 1; $i <= 12; $i++) {
 160             $date = new DateTime('now', new DateTimeZone("Etc/GMT+{$i}"));
 161             $this->assertSame(- $i * 60 * 60, $date->getOffset());
 162             $date = new DateTime('now', new DateTimeZone(core_date::normalise_timezone("GMT+{$i}")));
 163             $this->assertSame($i * 60 * 60, $date->getOffset());
 164             $date = new DateTime('now', new DateTimeZone(core_date::normalise_timezone("UTC+{$i}")));
 165             $this->assertSame($i * 60 * 60, $date->getOffset());
 166         }
 167     }
 168
 169     public function test_timezone_lang_strings() {
 170         $phpzones = DateTimeZone::listIdentifiers();
 171         $manager = get_string_manager();
 172         foreach ($phpzones as $tz) {
 173             $this->assertTrue($manager->string_exists(strtolower($tz), 'core_timezones'),
 174                     'String for timezone ' . strtolower($tz) . ' not found.');
 175         }
 176     }
 177
 178     public function test_get_localised_timezone() {
 179         $this->resetAfterTest();
 180
 181         $this->setTimezone('Pacific/Auckland', 'Pacific/Auckland');
 182
 183         $result = core_date::get_localised_timezone('Pacific/Auckland');
 184         $this->assertSame('Pacific/Auckland', $result);
 185
 186         $result = core_date::get_localised_timezone('99');
 187         $this->assertSame('Server timezone (Pacific/Auckland)', $result);
 188
 189         $result = core_date::get_localised_timezone(99);
 190         $this->assertSame('Server timezone (Pacific/Auckland)', $result);
 191
 192         $result = core_date::get_localised_timezone('Etc/GMT-1');
 193         $this->assertSame('UTC+1', $result);
 194
 195         $result = core_date::get_localised_timezone('Etc/GMT+2');
 196         $this->assertSame('UTC-2', $result);
 197
 198         $result = core_date::get_localised_timezone('GMT');
 199         $this->assertSame('UTC', $result);
 200
 201         $result = core_date::get_localised_timezone('Etc/GMT');
 202         $this->assertSame('UTC', $result);
 203     }
 204
 205     public function test_get_list_of_timezones() {
 206         $this->resetAfterTest();
 207
 208         $this->setTimezone('Pacific/Auckland', 'Pacific/Auckland');
 209
 210         $phpzones = DateTimeZone::listIdentifiers();
 211
 212         $zones = core_date::get_list_of_timezones();
 213         $this->assertSame(count($phpzones), count($zones));
 214         foreach ($zones as $zone => $zonename) {
 215             $this->assertSame($zone, $zonename); // The same in English!
 216             $this->assertContains($zone, $phpzones); // No extras expected.
 217         }
 218
 219         $this->assertSame($zones, core_date::get_list_of_timezones(null, false));
 220
 221         $nnzones = core_date::get_list_of_timezones(null, true);
 222         $last = $nnzones['99'];
 223         $this->assertSame('Server timezone (Pacific/Auckland)', $last);
 224         unset($nnzones['99']);
 225         $this->assertSame($zones, $nnzones);
 226
 227         $nnzones = core_date::get_list_of_timezones('99', false);
 228         $last = $nnzones['99'];
 229         $this->assertSame('Server timezone (Pacific/Auckland)', $last);
 230         unset($nnzones['99']);
 231         $this->assertSame($zones, $nnzones);
 232
 233         $xxzones = core_date::get_list_of_timezones('xx', false);
 234         $xx = $xxzones['xx'];
 235         $this->assertSame('Invalid timezone "xx"', $xx);
 236         unset($xxzones['xx']);
 237         $this->assertSame($zones, $xxzones);
 238
 239         $xxzones = core_date::get_list_of_timezones('1', false);
 240         $xx = $xxzones['1'];
 241         $this->assertSame('Invalid timezone "UTC+1.0"', $xx);
 242         unset($xxzones['1']);
 243         $this->assertSame($zones, $xxzones);
 244
 245         $xxzones = core_date::get_list_of_timezones('-1.5', false);
 246         $xx = $xxzones['-1.5'];
 247         $this->assertSame('Invalid timezone "UTC-1.5"', $xx);
 248         unset($xxzones['-1.5']);
 249         $this->assertSame($zones, $xxzones);
 250
 251     }
 252
 253     public function test_get_server_timezone() {
 254         global $CFG;
 255         $this->resetAfterTest();
 256
 257         $this->setTimezone('Pacific/Auckland', 'Pacific/Auckland');
 258         $this->assertSame('Pacific/Auckland', core_date::get_server_timezone());
 259
 260         $this->setTimezone('Pacific/Auckland', 'Europe/Prague');
 261         $this->assertSame('Pacific/Auckland', core_date::get_server_timezone());
 262
 263         $this->setTimezone('99', 'Pacific/Auckland');
 264         $this->assertSame('Pacific/Auckland', core_date::get_server_timezone());
 265
 266         $this->setTimezone(99, 'Pacific/Auckland');
 267         $this->assertSame('Pacific/Auckland', core_date::get_server_timezone());
 268
 269         $this->setTimezone('Pacific/Auckland', 'Pacific/Auckland');
 270         unset($CFG->timezone);
 271         $this->assertSame('Pacific/Auckland', core_date::get_server_timezone());
 272
 273         // Admin should fix the settings.
 274         $this->setTimezone('xxx/zzzz', 'Europe/Prague');
 275         $this->assertSame('Europe/Prague', core_date::get_server_timezone());
 276     }
 277
 278     public function test_get_server_timezone_object() {
 279         $this->resetAfterTest();
 280
 281         $zones = core_date::get_list_of_timezones();
 282         foreach ($zones as $zone) {
 283             $this->setTimezone($zone, 'Pacific/Auckland');
 284             $tz = core_date::get_server_timezone_object();
 285             $this->assertInstanceOf('DateTimeZone', $tz);
 286             $this->assertSame($zone, $tz->getName());
 287         }
 288     }
 289
 290     public function test_set_default_server_timezone() {
 291         global $CFG;
 292         $this->resetAfterTest();
 293
 294         $this->setTimezone('Europe/Prague', 'Pacific/Auckland');
 295         unset($CFG->timezone);
 296         date_default_timezone_set('UTC');
 297         core_date::set_default_server_timezone();
 298         $this->assertSame('Pacific/Auckland', date_default_timezone_get());
 299
 300         $this->setTimezone('', 'Pacific/Auckland');
 301         date_default_timezone_set('UTC');
 302         core_date::set_default_server_timezone();
 303         $this->assertSame('Pacific/Auckland', date_default_timezone_get());
 304
 305         $this->setTimezone('99', 'Pacific/Auckland');
 306         date_default_timezone_set('UTC');
 307         core_date::set_default_server_timezone();
 308         $this->assertSame('Pacific/Auckland', date_default_timezone_get());
 309
 310         $this->setTimezone(99, 'Pacific/Auckland');
 311         date_default_timezone_set('UTC');
 312         core_date::set_default_server_timezone();
 313         $this->assertSame('Pacific/Auckland', date_default_timezone_get());
 314
 315         $this->setTimezone('Europe/Prague', 'Pacific/Auckland');
 316         $CFG->timezone = 'UTC';
 317         core_date::set_default_server_timezone();
 318         $this->assertSame('UTC', date_default_timezone_get());
 319
 320         $this->setTimezone('Europe/Prague', 'Pacific/Auckland');
 321         $CFG->timezone = 'Australia/Perth';
 322         core_date::set_default_server_timezone();
 323         $this->assertSame('Australia/Perth', date_default_timezone_get());
 324
 325         $this->setTimezone('0', 'Pacific/Auckland');
 326         date_default_timezone_set('UTC');
 327         core_date::set_default_server_timezone();
 328         $this->assertSame('Etc/GMT', date_default_timezone_get());
 329
 330         $this->setTimezone('1', 'Pacific/Auckland');
 331         date_default_timezone_set('UTC');
 332         core_date::set_default_server_timezone();
 333         $this->assertSame('Etc/GMT-1', date_default_timezone_get());
 334
 335         $this->setTimezone(1, 'Pacific/Auckland');
 336         date_default_timezone_set('UTC');
 337         core_date::set_default_server_timezone();
 338         $this->assertSame('Etc/GMT-1', date_default_timezone_get());
 339
 340         $this->setTimezone('1.0', 'Pacific/Auckland');
 341         date_default_timezone_set('UTC');
 342         core_date::set_default_server_timezone();
 343         $this->assertSame('Etc/GMT-1', date_default_timezone_get());
 344     }
 345
 346     public function legacyUserTimezoneProvider() {
 347         return [
 348             ['', 'Australia/Perth'],            // Fallback on default timezone.
 349             ['-13.0', 'Australia/Perth'],       // Fallback on default timezone.
 350             ['-12.5', 'Etc/GMT+12'],
 351             ['-12.0', 'Etc/GMT+12'],
 352             ['-11.5', 'Etc/GMT+11'],
 353             ['-11.0', 'Etc/GMT+11'],
 354             ['-10.5', 'Etc/GMT+10'],
 355             ['-10.0', 'Etc/GMT+10'],
 356             ['-9.5', 'Etc/GMT+9'],
 357             ['-9.0', 'Etc/GMT+9'],
 358             ['-8.5', 'Etc/GMT+8'],
 359             ['-8.0', 'Etc/GMT+8'],
 360             ['-7.5', 'Etc/GMT+7'],
 361             ['-7.0', 'Etc/GMT+7'],
 362             ['-6.5', 'Etc/GMT+6'],
 363             ['-6.0', 'Etc/GMT+6'],
 364             ['-5.5', 'Etc/GMT+5'],
 365             ['-5.0', 'Etc/GMT+5'],
 366             ['-4.5', 'Etc/GMT+4'],
 367             ['-4.0', 'Etc/GMT+4'],
 368             ['-3.5', 'Etc/GMT+3'],
 369             ['-3.0', 'Etc/GMT+3'],
 370             ['-2.5', 'Etc/GMT+2'],
 371             ['-2.0', 'Etc/GMT+2'],
 372             ['-1.5', 'Etc/GMT+1'],
 373             ['-1.0', 'Etc/GMT+1'],
 374             ['-0.5', 'Etc/GMT'],
 375             ['0', 'Etc/GMT'],
 376             ['0.0', 'Etc/GMT'],
 377             ['0.5', 'Etc/GMT'],
 378             ['1.0', 'Etc/GMT-1'],
 379             ['1.5', 'Etc/GMT-1'],
 380             ['2.0', 'Etc/GMT-2'],
 381             ['2.5', 'Etc/GMT-2'],
 382             ['3.0', 'Etc/GMT-3'],
 383             ['3.5', 'Etc/GMT-3'],
 384             ['4.0', 'Etc/GMT-4'],
 385             ['4.5', 'Asia/Kabul'],
 386             ['5.0', 'Etc/GMT-5'],
 387             ['5.5', 'Asia/Kolkata'],
 388             ['6.0', 'Etc/GMT-6'],
 389             ['6.5', 'Asia/Rangoon'],
 390             ['7.0', 'Etc/GMT-7'],
 391             ['7.5', 'Etc/GMT-7'],
 392             ['8.0', 'Etc/GMT-8'],
 393             ['8.5', 'Etc/GMT-8'],
 394             ['9.0', 'Etc/GMT-9'],
 395             ['9.5', 'Australia/Darwin'],
 396             ['10.0', 'Etc/GMT-10'],
 397             ['10.5', 'Etc/GMT-10'],
 398             ['11.0', 'Etc/GMT-11'],
 399             ['11.5', 'Etc/GMT-11'],
 400             ['12.0', 'Etc/GMT-12'],
 401             ['12.5', 'Etc/GMT-12'],
 402             ['13.0', 'Etc/GMT-13'],
 403         ];
 404     }
 405
 406     /**
 407      * @dataProvider legacyUserTimezoneProvider
 408      * @param string $tz The legacy timezone.
 409      * @param string $expected The expected converted timezone.
 410      */
 411     public function test_get_legacy_user_timezone($tz, $expected) {
 412         $this->setTimezone('Australia/Perth', 'Australia/Perth');
 413         $this->assertEquals($expected, core_date::get_user_timezone($tz));
 414     }
 415
 416     public function test_get_user_timezone() {
 417         global $CFG, $USER;
 418         $this->resetAfterTest();
 419
 420         // Null parameter.
 421
 422         $this->setTimezone('Europe/Prague', 'Pacific/Auckland');
 423         $USER->timezone = 'Pacific/Auckland';
 424         $CFG->forcetimezone = '99';
 425         $this->assertSame('Pacific/Auckland', core_date::get_user_timezone(null));
 426         $this->assertSame('Pacific/Auckland', core_date::get_user_timezone());
 427
 428         $this->setTimezone('Europe/Prague', 'Pacific/Auckland');
 429         $USER->timezone = 'Pacific/Auckland';
 430         $CFG->forcetimezone = 'Europe/Berlin';
 431         $this->assertSame('Europe/Berlin', core_date::get_user_timezone(null));
 432         $this->assertSame('Europe/Berlin', core_date::get_user_timezone());
 433
 434         $this->setTimezone('Europe/Prague', 'Pacific/Auckland');
 435         $USER->timezone = 'Pacific/Auckland';
 436         $CFG->forcetimezone = 'xxx/yyy';
 437         $this->assertSame('Europe/Prague', core_date::get_user_timezone(null));
 438         $this->assertSame('Europe/Prague', core_date::get_user_timezone());
 439
 440         $this->setTimezone('Europe/Prague', 'Pacific/Auckland');
 441         $USER->timezone = 'abc/def';
 442         $CFG->forcetimezone = '99';
 443         $this->assertSame('Europe/Prague', core_date::get_user_timezone(null));
 444         $this->assertSame('Europe/Prague', core_date::get_user_timezone());
 445
 446         $this->setTimezone('xxx/yyy', 'Europe/London');
 447         $USER->timezone = 'abc/def';
 448         $CFG->forcetimezone = 'Europe/Berlin';
 449         $this->assertSame('Europe/Berlin', core_date::get_user_timezone(null));
 450         $this->assertSame('Europe/Berlin', core_date::get_user_timezone());
 451
 452         $this->setTimezone('xxx/yyy', 'Europe/London');
 453         $USER->timezone = 'abc/def';
 454         $CFG->forcetimezone = 99;
 455         $this->assertSame('Europe/London', core_date::get_user_timezone(null));
 456         $this->assertSame('Europe/London', core_date::get_user_timezone());
 457
 458         // User object parameter.
 459         $admin = get_admin();
 460
 461         $this->setTimezone('Europe/London');
 462         $USER->timezone = 'Pacific/Auckland';
 463         $CFG->forcetimezone = '99';
 464         $admin->timezone = 'Australia/Perth';
 465         $this->assertSame('Australia/Perth', core_date::get_user_timezone($admin));
 466
 467         $this->setTimezone('Europe/Prague');
 468         $USER->timezone = 'Pacific/Auckland';
 469         $CFG->forcetimezone = '99';
 470         $admin->timezone = '99';
 471         $this->assertSame('Europe/Prague', core_date::get_user_timezone($admin));
 472
 473         $this->setTimezone('99', 'Europe/London');
 474         $USER->timezone = 'Pacific/Auckland';
 475         $CFG->forcetimezone = '99';
 476         $admin->timezone = '99';
 477         $this->assertSame('Europe/London', core_date::get_user_timezone($admin));
 478
 479         $this->setTimezone('Europe/Prague');
 480         $USER->timezone = 'Pacific/Auckland';
 481         $CFG->forcetimezone = '99';
 482         $admin->timezone = 'xx/zz';
 483         $this->assertSame('Europe/Prague', core_date::get_user_timezone($admin));
 484
 485         $this->setTimezone('Europe/Prague');
 486         $USER->timezone = 'Pacific/Auckland';
 487         $CFG->forcetimezone = '99';
 488         unset($admin->timezone);
 489         $this->assertSame('Europe/Prague', core_date::get_user_timezone($admin));
 490
 491         $this->setTimezone('Europe/Prague');
 492         $USER->timezone = 'Pacific/Auckland';
 493         $CFG->forcetimezone = 'Europe/Berlin';
 494         $admin->timezone = 'Australia/Perth';
 495         $this->assertSame('Europe/Berlin', core_date::get_user_timezone($admin));
 496
 497         // Other scalar parameter.
 498
 499         $this->setTimezone('Europe/Prague');
 500         $CFG->forcetimezone = '99';
 501
 502         $USER->timezone = 'Pacific/Auckland';
 503         $this->assertSame('Pacific/Auckland', core_date::get_user_timezone('99'));
 504         $this->assertSame('Etc/GMT-1', core_date::get_user_timezone('1'));
 505         $this->assertSame('Etc/GMT+1', core_date::get_user_timezone(-1));
 506         $this->assertSame('Europe/London', core_date::get_user_timezone('Europe/London'));
 507         $USER->timezone = '99';
 508         $this->assertSame('Europe/Prague', core_date::get_user_timezone('99'));
 509         $this->assertSame('Europe/London', core_date::get_user_timezone('Europe/London'));
 510         $this->assertSame('Europe/Prague', core_date::get_user_timezone('xxx/zzz'));
 511         $USER->timezone = 'xxz/zzz';
 512         $this->assertSame('Europe/Prague', core_date::get_user_timezone('99'));
 513
 514         $this->setTimezone('99', 'Europe/Prague');
 515         $CFG->forcetimezone = '99';
 516
 517         $USER->timezone = 'Pacific/Auckland';
 518         $this->assertSame('Pacific/Auckland', core_date::get_user_timezone('99'));
 519         $this->assertSame('Europe/London', core_date::get_user_timezone('Europe/London'));
 520         $USER->timezone = '99';
 521         $this->assertSame('Europe/Prague', core_date::get_user_timezone('99'));
 522         $this->assertSame('Europe/London', core_date::get_user_timezone('Europe/London'));
 523         $this->assertSame('Europe/Prague', core_date::get_user_timezone('xxx/zzz'));
 524         $USER->timezone = 99;
 525         $this->assertSame('Europe/London', core_date::get_user_timezone('Europe/London'));
 526         $this->assertSame('Europe/Prague', core_date::get_user_timezone('xxx/zzz'));
 527         $USER->timezone = 'xxz/zzz';
 528         $this->assertSame('Europe/Prague', core_date::get_user_timezone('99'));
 529
 530         $this->setTimezone('xxx', 'Europe/Prague');
 531         $CFG->forcetimezone = '99';
 532         $USER->timezone = 'xxx';
 533         $this->assertSame('Europe/Prague', core_date::get_user_timezone('99'));
 534         $this->assertSame('Europe/Prague', core_date::get_user_timezone(99));
 535         $this->assertSame('Etc/GMT-1', core_date::get_user_timezone(1));
 536
 537         $this->setTimezone('Europe/Prague');
 538         $CFG->forcetimezone = 'Pacific/Auckland';
 539         $USER->timezone = 'Europe/London';
 540         $this->assertSame('Pacific/Auckland', core_date::get_user_timezone(99));
 541         $this->assertSame('Europe/Berlin', core_date::get_user_timezone('Europe/Berlin'));
 542
 543         // TZ object param.
 544
 545         $this->setTimezone('UTC');
 546         $USER->timezone = 'Europe/London';
 547         $CFG->forcetimezone = 99;
 548         $tz = new DateTimeZone('Pacific/Auckland');
 549         $this->assertSame('Pacific/Auckland', core_date::get_user_timezone($tz));
 550     }
 551
 552     public function test_get_user_timezone_object() {
 553         global $CFG, $USER;
 554         $this->resetAfterTest();
 555
 556         $this->setTimezone('Pacific/Auckland');
 557         $CFG->forcetimezone = '99';
 558
 559         $zones = core_date::get_list_of_timezones();
 560         foreach ($zones as $zone) {
 561             $USER->timezone = $zone;
 562             $tz = core_date::get_user_timezone_object();
 563             $this->assertInstanceOf('DateTimeZone', $tz);
 564             $this->assertSame($zone, $tz->getName());
 565         }
 566     }
 567 }