TextItemBaseTest.php

<?php

namespace Drupal\Tests\text\Kernel;

use Drupal\Core\Field\BaseFieldDefinition;
use Drupal\KernelTests\KernelTestBase;
use Drupal\text\Plugin\Field\FieldType\TextItemBase;

/**
 * Tests TextItemBase.
 *
 * @group text
 */
class TextItemBaseTest extends KernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'filter',
        'text',
    ];
    
    /**
     * Tests creation of sample values.
     *
     * @covers ::generateSampleValue
     * @dataProvider providerTextFieldSampleValue
     */
    public function testTextFieldSampleValue($max_length) {
        // Create a text field.
        $field_definition = BaseFieldDefinition::create('text')->setTargetEntityTypeId('foo');
        // Ensure testing of max_lengths from 1 to 3 because generateSampleValue
        // creates a sentence with a maximum number of words set to 1/3 of the
        // max_length of the field.
        $field_definition->setSetting('max_length', $max_length);
        $sample_value = TextItemBase::generateSampleValue($field_definition);
        $this->assertEquals($max_length, strlen($sample_value['value']));
    }
    
    /**
     * Data provider for testTextFieldSampleValue.
     */
    public function providerTextFieldSampleValue() {
        return [
            [
                1,
            ],
            [
                2,
            ],
            [
                3,
            ],
            [
                4,
            ],
        ];
    }

}