DatetimeElementFormTest.php

<?php

namespace Drupal\KernelTests\Core\Datetime;

use Drupal\Core\Datetime\DrupalDateTime;
use Drupal\Core\Form\FormInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\KernelTests\KernelTestBase;

/**
 * Tests DatetimeElement functionality.
 *
 * @group Form
 */
class DatetimeElementFormTest extends KernelTestBase implements FormInterface {
    
    /**
     * The variable under test.
     *
     * @var string
     */
    protected $flag;
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    public static $modules = [
        'datetime',
        'system',
    ];
    
    /**
     * Sets up the test.
     */
    protected function setUp() {
        parent::setUp();
    }
    
    /**
     * {@inheritdoc}
     */
    public function getFormId() {
        return 'test_datetime_element';
    }
    
    /**
     * {@inheritdoc}
     */
    public function datetimecallback($date) {
        $this->flag = 'Date time callback called.';
    }
    
    /**
     * {@inheritdoc}
     */
    public function buildForm(array $form, FormStateInterface $form_state) {
        $form['datetime_element'] = [
            '#title' => 'datelist test',
            '#type' => 'datetime',
            '#default_value' => new DrupalDateTime('2000-01-01 00:00:00'),
            '#date_date_format' => 'Y-m-d',
            '#date_time_format' => 'H:i:s',
            '#date_date_element' => 'HTML Date',
            '#date_time_element' => 'HTML Time',
            '#date_increment' => 1,
            '#date_date_callbacks' => [
                [
                    $this,
                    'datetimecallback',
                ],
            ],
        ];
        // Element without specifying the default value.
        $form['simple_datetime_element'] = [
            '#type' => 'datetime',
            '#date_date_format' => 'Y-m-d',
            '#date_time_format' => 'H:i:s',
            '#date_date_element' => 'HTML Date',
            '#date_time_element' => 'HTML Time',
        ];
        $form['submit'] = [
            '#type' => 'submit',
            '#value' => t('Submit'),
        ];
        return $form;
    }
    
    /**
     * {@inheritdoc}
     */
    public function submitForm(array &$form, FormStateInterface $form_state) {
    }
    
    /**
     * Form validation handler.
     *
     * @param array $form
     *   An associative array containing the structure of the form.
     * @param \Drupal\Core\Form\FormStateInterface $form_state
     *   The current state of the form.
     */
    public function validateForm(array &$form, FormStateInterface $form_state) {
    }
    
    /**
     * Tests that default handlers are added even if custom are specified.
     */
    public function testDatetimeElement() {
        $form = \Drupal::formBuilder()->getForm($this);
        $this->render($form);
        $this->assertEqual(t('Date time callback called.'), $this->flag);
    }
    
    /**
     * Tests proper timezone handling of the Datetime element.
     */
    public function testTimezoneHandling() {
        // Render the form once with the site's timezone.
        $form = \Drupal::formBuilder()->getForm($this);
        $this->render($form);
        $this->assertEquals('Australia/Sydney', $form['datetime_element']['#date_timezone']);
        // Mimic a user with a different timezone than Australia/Sydney.
        date_default_timezone_set('UTC');
        $form = \Drupal::formBuilder()->getForm($this);
        $this->render($form);
        $this->assertEquals('UTC', $form['datetime_element']['#date_timezone']);
    }

}