function DrupalDateTimeTest::testDateTimezone

Tests that DrupalDateTime can detect the right timezone to use.

Test with a variety of less commonly used timezone names to help ensure that the system timezone will be different than the stated timezones.

File

core/tests/Drupal/KernelTests/Core/Datetime/DrupalDateTimeTest.php, line 46

Class

DrupalDateTimeTest

Tests DrupalDateTime functionality.

Namespace

Code

public function testDateTimezone() : void {
  $date_string = '2007-01-31 21:00:00';
  // Make sure no site timezone has been set.
  $this->config('system.date')
    ->set('timezone.user.configurable', 0)
    ->set('timezone.default', NULL)
    ->save();
  // Detect the system timezone.
  $system_timezone = date_default_timezone_get();
  // Create a date object with an unspecified timezone, which should
  // end up using the system timezone.
  $date = new DrupalDateTime($date_string);
  $timezone = $date->getTimezone()
    ->getName();
  $this->assertSame($system_timezone, $timezone, 'DrupalDateTime uses the system timezone when there is no site timezone.');
  // Create a date object with a specified timezone.
  $date = new DrupalDateTime($date_string, 'America/Yellowknife');
  $timezone = $date->getTimezone()
    ->getName();
  $this->assertSame('America/Yellowknife', $timezone, 'DrupalDateTime uses the specified timezone if provided.');
  // Set a site timezone.
  $this->config('system.date')
    ->set('timezone.default', 'Europe/Warsaw')
    ->save();
  // Create a date object with an unspecified timezone, which should
  // end up using the site timezone.
  $date = new DrupalDateTime($date_string);
  $timezone = $date->getTimezone()
    ->getName();
  $this->assertSame('Europe/Warsaw', $timezone, 'DrupalDateTime uses the site timezone if provided.');
  // Create user.
  $this->config('system.date')
    ->set('timezone.user.configurable', 1)
    ->save();
  $this->setUpCurrentUser([
    'timezone' => 'Asia/Manila',
  ]);
  // Create a date object with an unspecified timezone, which should
  // end up using the user timezone.
  $date = new DrupalDateTime($date_string);
  $timezone = $date->getTimezone()
    ->getName();
  $this->assertSame('Asia/Manila', $timezone, 'DrupalDateTime uses the user timezone, if configurable timezones are used and it is set.');
}