Synopsis
Declared in <bsltf_degeneratefunctor.h>
template<
class FUNCTOR,
bool ENABLE_SWAP = true>
class DegenerateFunctor;
Description
This test class template adapts a CopyConstructible class to offer a minimal or outright obstructive interface for testing generic code. To support the testing of standard containers, this adapter will be MoveConstructible, CopyConstructible, and nothrow Destructible as long as the adapted FUNCTOR satisfies the same requirements. This class will further be Swappable if (the template parameter) ENABLE_SWAP is true and the adapted FUNCTOR is MoveConstructible. The (inherited) function call operator should be the only other available method, no other operation (e.g., the unary address-of operator) should be usable. We take advantage of the fact that defining a copy constructor inhibits the generation of a default constructor, and that constructors are not inherited by a derived class. DegenerateFunctor objects must be created through either the copy constructor, or by wrapping a FUNCTOR object through the static factory method of this class, cloneBaseObject.