getPhpDateTime example

  public function testGetPhpDateTime() {
    $new_york = new \DateTimeZone('America/New_York');
    $berlin = new \DateTimeZone('Europe/Berlin');

    // Test retrieving a cloned copy of the wrapped \DateTime object, and that     // altering it does not change the DrupalDateTime object.     $drupaldatetime = DrupalDateTime::createFromFormat('Y-m-d H:i:s', '2017-07-13 22:40:00', $new_york, ['langcode' => 'en']);
    $this->assertEquals(1500000000, $drupaldatetime->getTimestamp());
    $this->assertEquals('America/New_York', $drupaldatetime->getTimezone()->getName());

    $datetime = $drupaldatetime->getPhpDateTime();
    $this->assertInstanceOf('DateTime', $datetime);
    $this->assertEquals(1500000000, $datetime->getTimestamp());
    $this->assertEquals('America/New_York', $datetime->getTimezone()->getName());

    $datetime->setTimestamp(1400000000)->setTimezone($berlin);
    $this->assertEquals(1400000000, $datetime->getTimestamp());
    $this->assertEquals('Europe/Berlin', $datetime->getTimezone()->getName());
    $this->assertEquals(1500000000, $drupaldatetime->getTimestamp());
    $this->assertEquals('America/New_York', $drupaldatetime->getTimezone()->getName());
  }

  

  public function testGetPhpDateTime() {
    $new_york = new \DateTimeZone('America/New_York');
    $berlin = new \DateTimeZone('Europe/Berlin');

    // Test retrieving a cloned copy of the wrapped \DateTime object, and that     // altering it does not change the DateTimePlus object.     $datetimeplus = DateTimePlus::createFromFormat('Y-m-d H:i:s', '2017-07-13 22:40:00', $new_york, ['langcode' => 'en']);
    $this->assertEquals(1500000000, $datetimeplus->getTimestamp());
    $this->assertEquals('America/New_York', $datetimeplus->getTimezone()->getName());

    $datetime = $datetimeplus->getPhpDateTime();
    $this->assertInstanceOf('DateTime', $datetime);
    $this->assertEquals(1500000000, $datetime->getTimestamp());
    $this->assertEquals('America/New_York', $datetime->getTimezone()->getName());

    $datetime->setTimestamp(1400000000)->setTimezone($berlin);
    $this->assertEquals(1400000000, $datetime->getTimestamp());
    $this->assertEquals('Europe/Berlin', $datetime->getTimezone()->getName());
    $this->assertEquals(1500000000, $datetimeplus->getTimestamp());
    $this->assertEquals('America/New_York', $datetimeplus->getTimezone()->getName());
  }

}