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']);
}