declarative_data_sources: CatalogDeclarativeDataSources, credentials_path: Optional[Path]
Tests connection to declarative data sources.
If `credentials_path` is omitted then the connection is tested with empty credentials. In case some connection failed the `ValueError` is raised with information about why the connection to the data source failed, e.g. host unreachable or invalid login or password.
|declarative_data_sources||CatalogDeclarativeDataSources||Declarative Data Sources object|
|credentials_path||Optional[Path]||Path to the credentials. Defaults to None.|