DateFormatValidationTest.php

<?php

declare (strict_types=1);
namespace Drupal\KernelTests\Core\Entity;

use Drupal\Core\Datetime\Entity\DateFormat;
use Drupal\KernelTests\Core\Config\ConfigEntityValidationTestBase;

/**
 * Tests validation of date_format entities.
 *
 * @group Entity
 * @group Validation
 */
class DateFormatValidationTest extends ConfigEntityValidationTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->entity = DateFormat::create([
            'id' => 'test',
            'label' => 'Test',
            'pattern' => 'Y-m-d',
        ]);
        $this->entity
            ->save();
    }
    
    /**
     * Tests that the pattern of a date format is validated.
     *
     * @param string $pattern
     *   The pattern to set.
     * @param bool $locked
     *   Whether the date format entity is locked or not.
     * @param string $expected_error
     *   The error message that should be flagged for the invalid pattern.
     *
     * @testWith ["q", true, "This is not a valid date format."]
     *   ["", true, "This value should not be blank."]
     *   ["q", false, "This is not a valid date format."]
     *   ["", false, "This value should not be blank."]
     */
    public function testPatternIsValidated(string $pattern, bool $locked, string $expected_error) : void {
        $this->entity
            ->setPattern($pattern)
            ->set('locked', $locked);
        $this->assertValidationErrors([
            'pattern' => $expected_error,
        ]);
    }

}