lib/singletonpreconfigure.hpp File Reference

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Detailed Description

Preconfiguration of some Singleton types, done by template specialisation.

Typically the client code just includes singleton.h and uses the Singleton type. But in some cases, we want to configure specific (dependency injection) behaviour at a central location. At some point, we may well have a full blown Dependency Manager, but for the moment using just some specialized Singleton type for some instances seems sufficient.

One reason why one wants special Singleton behaviour is testing: Without altering the executable, for running some tests we need to inject a Test Mock in place of some service object, so we can verify the behaviour of the code using this service. For this, we mix lumiera::test::MockInjector into the actual Singleton type.

Note:

we declare the specialisations into the target namespace

See also:

SingletonFactory

singletontestmocktest.hpp

Definition in file singletonpreconfigure.hpp.

#include "lib/test/mockinjector.hpp"

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Namespaces
namespace	backend_interface
namespace	lumiera
namespace	lumiera::test
Classes
class	lumiera::Singleton< SI >
	Default Singleton configuration. More...
class	lumiera::Singleton< backend_interface::MediaAccessFacade >
class	lumiera::Singleton< test::TestSingletonO >