Doctrine\ORM\Tools\SchemaTool::dropDatabase PHP Method

    public function dropDatabase()
    {
        $dropSchemaSql = $this->getDropDatabaseSQL();
        $conn = $this->_em->getConnection();

        foreach ($dropSchemaSql as $sql) {
            $conn->executeQuery($sql);
        }
    }

 protected function tearDown()
 {
     // Clean anything still idle in the UOW
     $this->_em->clear();
     // Clear out anything set in the db (schema is recreated on setUp()
     $this->_schemaTool->dropDatabase();
 }