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Add a unique pointer dynamic cast utility.

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ADAM David Alan Martin
2024-03-31 10:33:03 -04:00
parent e901aaedda
commit 53a4d91a23
4 changed files with 101 additions and 0 deletions
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58
Utility/derived_pointer_cast.test/0.cc Normal file
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static_assert( __cplusplus > 2020'99 );
#include "../derived_pointer_cast.h"
#include <Alepha/Testing/TableTest.h>
#include <Alepha/Testing/test.h>
#include <Alepha/Utility/evaluation_helpers.h>
static auto init= Alepha::Utility::enroll <=[]
{
using namespace Alepha::Testing::exports;
struct Base
{
virtual ~Base()= default;
};
struct Derived : Base {};
struct Derived2 : Base {};
"Can `derived_pointer_cast` work on simple cases?"_test <=TableTest
<
[]( std::function< std::unique_ptr< Base >() > makeBase )
{
auto base= makeBase();
return static_cast< bool >( Alepha::Utility::derived_pointer_cast< Derived >( std::move( base ) ) );
}
>
::Cases
{
{ "Is derived", { [] { return std::make_unique< Derived >(); } }, true },
{ "Not derived", { [] { return std::make_unique< Base >(); } }, std::type_identity< std::bad_cast >{} },
{ "Other derived", { [] { return std::make_unique< Derived2 >(); } }, std::type_identity< std::bad_cast >{} },
};
struct Alien
{
virtual ~Alien()= default;
};
struct AlienDerived : Alien {};
"Alien Test"_test <=TableTest
<
[]( std::function< std::unique_ptr< Alien >() > makeBase )
{
auto base= makeBase();
return static_cast< bool >( Alepha::Utility::derived_pointer_cast< Derived >( std::move( base ) ) );
}
>
::Cases
{
{ "Alien", { [] { return std::make_unique< Alien >(); } }, std::type_identity< std::bad_cast >{} },
{ "Alien Derived", { [] { return std::make_unique< AlienDerived >(); } }, std::type_identity< std::bad_cast >{} },
};
};

1
Utility/derived_pointer_cast.test/CMakeLists.txt Normal file
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unit_test( 0 )