function EnvironmentCleaner::doCleanDatabase

Performs the fixture database cleanup.

Return value

int The number of tables that were removed.

File

core/lib/Drupal/Core/Test/EnvironmentCleaner.php, line 78

Class

EnvironmentCleaner

Helper class for cleaning test environments.

Namespace

Code

protected function doCleanDatabase() : int {
    
    /** @var \Drupal\Core\Database\Schema $schema */
    $schema = $this->testDatabase
        ->schema();
    $tables = $schema->findTables('test%');
    $count = 0;
    foreach ($tables as $table) {
        // Only drop tables which begin wih 'test' followed by digits, for example,
        // {test12345678node__body}.
        if (preg_match('/^test\\d+.*/', $table, $matches)) {
            $schema->dropTable($matches[0]);
            $count++;
        }
    }
    return $count;
}