class MigrateBookTest

class MigrateBookTest extends MigrateDrupal7TestBase {
    
    /**
     * {@inheritdoc}
     */
    public static $modules = [
        'book',
        'menu_ui',
        'node',
        'text',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() {
        parent::setUp();
        $this->installSchema('book', [
            'book',
        ]);
        $this->installSchema('node', [
            'node_access',
        ]);
        $this->migrateUsers(FALSE);
        $this->migrateContentTypes();
        $this->executeMigrations([
            'd7_node',
            'd7_book',
        ]);
    }
    
    /**
     * Tests the Drupal 7 book structure to Drupal 8 migration.
     */
    public function testBook() {
        $nodes = Node::loadMultiple([
            1,
            2,
            4,
            6,
        ]);
        $this->assertSame('8', $nodes[1]->book['bid']);
        $this->assertSame('6', $nodes[1]->book['pid']);
        $this->assertSame('4', $nodes[2]->book['bid']);
        $this->assertSame('6', $nodes[2]->book['pid']);
        $this->assertSame('4', $nodes[4]->book['bid']);
        $this->assertSame('0', $nodes[4]->book['pid']);
        $this->assertSame('4', $nodes[6]->book['bid']);
        $this->assertSame('4', $nodes[6]->book['pid']);
        $tree = \Drupal::service('book.manager')->bookTreeAllData(4);
        $this->assertSame('4', $tree['49990 is - The thing about Firefly 4']['link']['nid']);
        $this->assertSame('6', $tree['49990 is - The thing about Firefly 4']['below']['50000 Comments are closed :-( 6']['link']['nid']);
        $this->assertSame('2', $tree['49990 is - The thing about Firefly 4']['below']['50000 Comments are closed :-( 6']['below']['50000 The thing about Deep Space 9 2']['link']['nid']);
        $this->assertSame([], $tree['49990 is - The thing about Firefly 4']['below']['50000 Comments are closed :-( 6']['below']['50000 The thing about Deep Space 9 2']['below']);
        // Set the d7_book migration to update and re run the migration.
        $id_map = $this->migration
            ->getIdMap();
        $id_map->prepareUpdate();
        $this->executeMigration('d7_book');
    }

}