TupleHelper_test Class Reference

Description

Test:

Cover various aspects of the integration of our type sequences with the tuple type from the standard library

• verify our generic tuple access decorator
• verify generating tuple types from type list processing
• TODO more helpers to come

Definition at line 75 of file tuple-helper-test.cpp.

Private Member Functions
virtual void	run (Arg)
void	check_diagnostics ()
	verify the test input data
void	check_tuple_from_Typelist ()
void	demonstrate_generic_iteration ()
template<typename X >
string	render ()
template<tuple_like X>
string	render ()
void	verify_tuple_like_concept ()

Member Function Documentation

run()

virtual void run ( Arg  )

inlineprivatevirtual

Definition at line 78 of file tuple-helper-test.cpp.

References TupleHelper_test::check_diagnostics(), TupleHelper_test::check_tuple_from_Typelist(), TupleHelper_test::demonstrate_generic_iteration(), and TupleHelper_test::verify_tuple_like_concept().

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check_diagnostics()

void check_diagnostics ( )

inlineprivate

verify the test input data

See also

TypeListManip_test::check_diagnostics() for an explanation of the DISPLAY macro

Definition at line 92 of file tuple-helper-test.cpp.

References DISPLAY, DUMPVAL, and EXPECT.

Referenced by TupleHelper_test::run().

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check_tuple_from_Typelist()

void check_tuple_from_Typelist ( )

inlineprivate

Test:

verify the ability to generate tuple types from typelist metaprogramming

• the resulting types are plain flat std::tuple instantiations
• memory layout is identical to a POD, as expected
• our generic string conversion is extended to work with tuples

Definition at line 122 of file tuple-helper-test.cpp.

References EXPECT.

Referenced by TupleHelper_test::run().

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demonstrate_generic_iteration()

void demonstrate_generic_iteration ( )

inlineprivate

Test:

demonstrate generic tuple iteration mechanisms

• apply a generic lambda to each element of a tuple
• iterate over all index numbers of a tuple (or tuple-like)

Remarks

the iteration happens at compile-time, i.e. the given lambda-template is instantiated for each type of the tuple; however, at runtime, each of these instantiations is invoked in sequence, performing the body of the λ-function, which may access the actual data value for each of the tuple elements.

Definition at line 184 of file tuple-helper-test.cpp.

References lib::meta::dump(), lib::meta::forEach(), and lib::meta::mapEach().

Referenced by TupleHelper_test::run().

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render() [1/2]

template<typename X >

string render ( )

inlineprivate

Definition at line 237 of file tuple-helper-test.cpp.

render() [2/2]

template<tuple_like X>

string render ( )

inlineprivate

Definition at line 244 of file tuple-helper-test.cpp.

verify_tuple_like_concept()

void verify_tuple_like_concept ( )

inlineprivate

Test:

verify construction of a concept to detect tuple-like classes, which conform to the »tuple protocol« and can thus be used in structural bindings

• the size of such an entity can be detected at compile time
• essentially, these can be considered as product types — which implies that there are N element types
• access to the corresponding member data is possible either through a get member function or free function detected by ADL

Definition at line 266 of file tuple-helper-test.cpp.

Referenced by TupleHelper_test::run().

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

• tuple-helper-test.cpp