public void List_DataManagers()
{
var builder = PddbTestingInstance.GetFake();
PersonalDataDB pddb = new PersonalDataDB(new InMemoryDataProvider());
pddb.CreateDatabase(builder);
IEnumerable <IDataManager> dataManagers = pddb.ListDataManagers();
Assert.NotEmpty(dataManagers);
Assert.Single(dataManagers);
IDataManager dataManager = dataManagers.Single();
Assert.Equal(builder.DataManager !.Name, dataManager.Name);
Assert.Equal(builder.DataManager !.Phone, dataManager.Phone);
Assert.Equal(builder.DataManager !.Email, dataManager.Email);
Assert.Equal(builder.DataManager !.RegistrationNumber, dataManager.RegistrationNumber);
Assert.Equal(builder.DataManager !.PersonalDataRegistrationNumber, dataManager.PersonalDataRegistrationNumber);
}