public function DateTimeTest::testTimeZoneHandling in Drupal 9

Same name and namespace in other branches

1. 8 core/modules/system/tests/src/Functional/System/DateTimeTest.php \Drupal\Tests\system\Functional\System\DateTimeTest::testTimeZoneHandling()
2. 10 core/modules/system/tests/src/Functional/System/DateTimeTest.php \Drupal\Tests\system\Functional\System\DateTimeTest::testTimeZoneHandling()

Tests time zones and DST handling.

File

core/modules/system/tests/src/Functional/System/DateTimeTest.php, line 55

Class

DateTimeTest

Configure date and time settings. Test date formatting and time zone handling, including daylight saving time.

Namespace

Drupal\Tests\system\Functional\System

Code

public function testTimeZoneHandling() {

  // Setup date/time settings for Honolulu time.
  $config = $this
    ->config('system.date')
    ->set('timezone.default', 'Pacific/Honolulu')
    ->set('timezone.user.configurable', 0)
    ->save();
  DateFormat::load('medium')
    ->setPattern('Y-m-d H:i:s O')
    ->save();

  // Create some nodes with different authored-on dates.
  $date1 = '2007-01-31 21:00:00 -1000';
  $date2 = '2007-07-31 21:00:00 -1000';
  $this
    ->drupalCreateContentType([
    'type' => 'article',
  ]);
  $node1 = $this
    ->drupalCreateNode([
    'created' => strtotime($date1),
    'type' => 'article',
  ]);
  $node2 = $this
    ->drupalCreateNode([
    'created' => strtotime($date2),
    'type' => 'article',
  ]);

  // Confirm date format and time zone.
  $this
    ->drupalGet('node/' . $node1
    ->id());

  // Date should be identical, with GMT offset of -10 hours.
  $this
    ->assertSession()
    ->pageTextContains('2007-01-31 21:00:00 -1000');
  $this
    ->drupalGet('node/' . $node2
    ->id());

  // Date should be identical, with GMT offset of -10 hours.
  $this
    ->assertSession()
    ->pageTextContains('2007-07-31 21:00:00 -1000');

  // Set time zone to Los Angeles time.
  $config
    ->set('timezone.default', 'America/Los_Angeles')
    ->save();
  \Drupal::entityTypeManager()
    ->getViewBuilder('node')
    ->resetCache([
    $node1,
    $node2,
  ]);

  // Confirm date format and time zone.
  $this
    ->drupalGet('node/' . $node1
    ->id());

  // Date should be two hours ahead, with GMT offset of -8 hours.
  $this
    ->assertSession()
    ->pageTextContains('2007-01-31 23:00:00 -0800');
  $this
    ->drupalGet('node/' . $node2
    ->id());

  // Date should be three hours ahead, with GMT offset of -7 hours.
  $this
    ->assertSession()
    ->pageTextContains('2007-08-01 00:00:00 -0700');
}