testDB()
Function to test the db connexion.
        protected
                                testDB(
                )
        : bool
    
    
    
        
            Return values
bool —True if success
Database Test Trait. Include method to test the db connexion
| testDB() | Function to test the db connexion. | bool | 
|---|
Function to test the db connexion.
        protected
                                testDB(
                )
        : bool
    
    
    
        
            True if success