BoxTest.php

<?php

namespace Drupal\Tests\block_content\Kernel\Plugin\migrate\source\d6;

use Drupal\Tests\migrate\Kernel\MigrateSqlSourceTestBase;

/**
 * Tests D6 block boxes source plugin.
 *
 * @covers \Drupal\block_content\Plugin\migrate\source\d6\Box
 * @group block_content
 */
class BoxTest extends MigrateSqlSourceTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'block_content',
        'migrate_drupal',
    ];
    
    /**
     * {@inheritdoc}
     */
    public function providerSource() {
        $tests = [];
        $tests[0]['source_data']['boxes'] = [
            [
                'bid' => 1,
                'body' => '<p>I made some custom content.</p>',
                'info' => 'Static Block',
                'format' => 1,
            ],
            [
                'bid' => 2,
                'body' => '<p>I made some more custom content.</p>',
                'info' => 'Test Content',
                'format' => 1,
            ],
        ];
        // The expected results are identical to the source data.
        $tests[0]['expected_data'] = $tests[0]['source_data']['boxes'];
        return $tests;
    }

}