DependencyConfiguration_test Class Reference

Description

Test:

verify the various modes of creating dependencies.

• standard case is singleton creation
• configuration of a specific subclass for the singleton
• expose a service with explicit lifecycle
• use of a custom factory function
• injection of a mock implementation for unit tests

Remarks

this test basically covers the same ground as DependencyFactory_test; but while the latter exists since our second rewrite of lib::Depend (2013), this test here is a byproduct of the third rewrite from 2018 and focuses more on the configuration and instance identities.

See also

lib::Dependency

Singleton_test

Definition at line 97 of file dependency-configuration-test.cpp.

Private Member Functions
virtual void	run (Arg)
void	verify_automaticReplacement ()
void	verify_customFactory ()
void	verify_expose_Service_with_Lifecycle ()
void	verify_Singleton ()
void	verify_SubclassSingleton ()

Member Function Documentation

verify_Singleton()

void verify_Singleton ( )

inlineprivate

Test:

without special configuration, singletons are injected as dependency

Definition at line 119 of file dependency-configuration-test.cpp.

verify_SubclassSingleton()

void verify_SubclassSingleton ( )

inlineprivate

Test:

preconfigure a specific subclass to be injected as singleton dependency

Definition at line 146 of file dependency-configuration-test.cpp.

References VERIFY_ERROR.

verify_expose_Service_with_Lifecycle()

void verify_expose_Service_with_Lifecycle ( )

inlineprivate

Test:

expose a dedicated service instance, which can be shut down

Definition at line 169 of file dependency-configuration-test.cpp.

verify_automaticReplacement()

void verify_automaticReplacement ( )

inlineprivate

Test:

injecting test mocks temporarily

Definition at line 207 of file dependency-configuration-test.cpp.

verify_customFactory()

void verify_customFactory ( )

inlineprivate

Test:

instance creation can be preconfigured with a closure.

Both Singleton and Test-Mock creation can optionally be performed through a user provided Lambda or Functor. To demonstrate this, we use a Veryspecial local class, which takes an int& as constructor parameter – and we create the actual instance through a lambda, which happens to capture a local variable by reference.

Warning

this can be dangerous; in the example demonstrated here, the created singleton instance continues to live until termination of the test-suite. After leaving this test function, it thus holds a dangling reference, pointing into stack memory....

Definition at line 316 of file dependency-configuration-test.cpp.

Inheritance diagram for DependencyConfiguration_test:

Collaboration diagram for DependencyConfiguration_test:

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The documentation for this class was generated from the following file:

• dependency-configuration-test.cpp