BookTest.php

<?php

namespace Drupal\Tests\book\Kernel\Plugin\migrate\source;

use Drupal\Tests\migrate\Kernel\MigrateSqlSourceTestBase;

/**
 * @covers \Drupal\book\Plugin\migrate\source\Book
 * @group book
 */
class BookTest extends MigrateSqlSourceTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'book',
        'migrate_drupal',
        'node',
    ];
    
    /**
     * {@inheritdoc}
     */
    public function providerSource() {
        $tests = [];
        // The source data.
        $tests[0]['source_data']['book'] = [
            [
                'mlid' => '1',
                'nid' => '4',
                'bid' => '4',
            ],
        ];
        $tests[0]['source_data']['menu_links'] = [
            [
                'menu_name' => 'book-toc-1',
                'mlid' => '1',
                'plid' => '0',
                'link_path' => 'node/4',
                'router_path' => 'node/%',
                'link_title' => 'Test top book title',
                'options' => 'a:0:{}',
                'module' => 'book',
                'hidden' => '0',
                'external' => '0',
                'has_children' => '1',
                'expanded' => '0',
                'weight' => '-10',
                'depth' => '1',
                'customized' => '0',
                'p1' => '1',
                'p2' => '0',
                'p3' => '0',
                'p4' => '0',
                'p5' => '0',
                'p6' => '0',
                'p7' => '0',
                'p8' => '0',
                'p9' => '0',
                'updated' => '0',
            ],
        ];
        // The expected results.
        $tests[0]['expected_data'] = [
            [
                'nid' => '4',
                'bid' => '4',
                'mlid' => '1',
                'plid' => '0',
                'weight' => '-10',
                'p1' => '1',
                'p2' => '0',
                'p3' => '0',
                'p4' => '0',
                'p5' => '0',
                'p6' => '0',
                'p7' => '0',
                'p8' => '0',
                'p9' => '0',
            ],
        ];
        return $tests;
    }

}