function MigrateTestBase::createMigrationConnection

Changes the database connection to the prefixed one.

@todo Remove when we don't use global. https://www.drupal.org/node/2552791

File

core/modules/migrate/tests/src/Kernel/MigrateTestBase.php, line 85

Class

MigrateTestBase

Creates abstract base class for migration tests.

Namespace

Code

private function createMigrationConnection() {
    // If the backup already exists, something went terribly wrong.
    // This case is possible, because database connection info is a static
    // global state construct on the Database class, which at least persists
    // for all test methods executed in one PHP process.
    if (Database::getConnectionInfo('simpletest_original_migrate')) {
        throw new \RuntimeException("Bad Database connection state: 'simpletest_original_migrate' connection key already exists. Broken test?");
    }
    // Clone the current connection and replace the current prefix.
    $connection_info = Database::getConnectionInfo('migrate');
    if ($connection_info) {
        Database::renameConnection('migrate', 'simpletest_original_migrate');
    }
    $connection_info = Database::getConnectionInfo('default');
    foreach ($connection_info as $target => $value) {
        $prefix = $value['prefix'];
        // Tests use 7 character prefixes at most so this can't cause collisions.
        $connection_info[$target]['prefix'] = $prefix . '0';
    }
    Database::addConnectionInfo('migrate', 'default', $connection_info['default']);
}