function DateHelperTest::testDayOfWeek

@covers ::dayOfWeek

File

core/tests/Drupal/Tests/Core/Datetime/DateHelperTest.php, line 218

Class

DateHelperTest

@coversDefaultClass \Drupal\Core\Datetime\DateHelper[[api-linebreak]] @group Datetime

Namespace

Code

public function testDayOfWeek() : void {
  // Passing NULL, FALSE, or an empty string should default to now. Just
  // check these are NOT null to avoid copying the implementation here.
  $this->assertNotNull(DateHelper::dayOfWeek());
  $this->assertNotNull(DateHelper::dayOfWeek(FALSE));
  $this->assertNotNull(DateHelper::dayOfWeek(''));
  // Pass nothing and expect to get NULL.
  $this->assertNull(DateHelper::dayOfWeek(0));
  $this->assertNull(DateHelper::dayOfWeek('0'));
  // December 31st 2022 is a Saturday.
  $value = '2022-12-31 00:00:00';
  $dateString = DateHelper::dayOfWeek($value);
  $this->assertEquals('6', $dateString);
  // November 30th 2020 is a Monday.
  $value = '2020-11-30 00:00:00';
  $dateString = DateHelper::dayOfWeek($value);
  $this->assertEquals('1', $dateString);
}