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feat(templates): add TVariant and the corresponding testing

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This commit is contained in:
_Redstone_c_
2022-03-15 19:26:31 +08:00
parent 8188d29a58
commit d8ae39b980
6 changed files with 706 additions and 4 deletions
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171
Redcraft.Utility/Source/Private/Testing/TemplatesTesting.cpp
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@ -2,6 +2,10 @@
#include "Miscellaneous/AssertionMacros.h"
#include "Templates/Templates.h"
#pragma warning(disable : 4930)
#pragma warning(disable : 4101)
#pragma warning(disable : 4244)
NAMESPACE_REDCRAFT_BEGIN
NAMESPACE_MODULE_BEGIN(Redcraft)
NAMESPACE_MODULE_BEGIN(Utility)
@ -12,6 +16,7 @@ void TestTemplates()
TestReferenceWrapper();
TestCompare();
TestOptional();
TestVariant();
TestMiscellaneous();
}
@ -270,6 +275,172 @@ void TestOptional()
TempZ = FTracker();
}
void TestVariant()
{
TVariant<int32> TempA;
TVariant<int32> TempB(Invalid);
TVariant<int32> TempC(InPlaceType<int32>, 0);
TVariant<int32> TempD(0);
TVariant<int32> TempE(0l);
TVariant<int32> TempF(0.0);
TVariant<int32> TempG(TempA);
TVariant<int32> TempH(TempD);
TVariant<int32> TempI(TVariant<int32>(0));
TVariant<int32> TempJ(TVariant<int32>(Invalid));
TVariant<int32> TempK, TempL, TempM, TempN;
TempK = TempA;
TempL = TempD;
TempM = TVariant<int32>(0);
TempN = TVariant<int32>(Invalid);
TempL = 303;
TempM = 404;
TVariant<int32> TempO;
TempO.Emplace<int32>(202);
TempO.Emplace<0>(404);
always_check(TempO);
always_check(TempO.IsValid());
always_check(TempO == 404);
always_check(TempO.GetValue<int32>() == 404);
always_check(TempO.Get<0>(500) == 404);
TempO.Reset();
always_check(TempO == TempO);
always_check(!(TempO != TempO));
always_check(TempO.Get<int32>(500) == 500);
int32 TempP = 200;
TempO = TempP;
TempO = 300;
always_check(TempO != TempA);
always_check(TempO != TempD);
always_check(TempO == TempO);
always_check(TempO == 300);
always_check(300 == TempO);
Swap(TempD, TempA);
int16 TempQ = 1024;
TVariant<int16, int32> TempR = TempQ;
TVariant<int16, int32> TempS(InPlaceType<int32>, TempQ);
TVariant<int16, int32> TempT(TempQ);
TVariant<int16, int32> TempU(TempR);
TVariant<int16, int32> TempV(TVariant<int16, int32>(2048));
TVariant<int16, int32> TempW, TempX, TempY;
TempW = TempQ;
TempX = TempR;
TempY = TVariant<int16, int32>(2048);
Swap(TempW, TempX);
Swap(TempW, TempX);
struct FTracker
{
FTracker() { }
FTracker(const FTracker& InValue) { always_check_no_entry(); }
FTracker(FTracker&& InValue) { }
FTracker& operator=(const FTracker& InValue) { always_check_no_entry(); return *this; }
FTracker& operator=(FTracker&& InValue) { return *this; }
};
TVariant<FTracker> TempZ(Invalid);
TempZ = TVariant<FTracker>();
TempZ = FTracker();
always_check((TIsSame<int32, TVariantAlternativeType<0, TVariant<int32, float>>::Type>::Value));
always_check((TIsSame<float, TVariantAlternativeType<1, TVariant<int32, float>>::Type>::Value));
always_check((TIsSame<const int32, TVariantAlternativeType<0, const TVariant<int32, float>>::Type>::Value));
always_check((TVariantAlternativeIndex<int32, TVariant<int32, float>>::Value == 0));
always_check((TVariantAlternativeIndex<float, TVariant<int32, float>>::Value == 1));
bool bIsConst;
bool bIsLValue;
bool bIsRValue;
auto TestQualifiers = [&bIsConst, &bIsLValue, &bIsRValue](auto&& Arg) -> int32
{
using T = decltype(Arg);
always_check(Arg == 10);
always_check(TIsConst<typename TRemoveReference<T>::Type>::Value == bIsConst);
always_check(TIsLValueReference<T>::Value == bIsLValue);
always_check(TIsRValueReference<T>::Value == bIsRValue);
return 0;
};
bIsConst = false;
bIsLValue = true;
bIsRValue = false;
TVariant<int32> TempLA = 10;
auto ReturnLA = TempLA.Visit(TestQualifiers);
always_check((TIsSame<int32, decltype(ReturnLA)>::Value));
bIsConst = true;
bIsLValue = true;
bIsRValue = false;
const TVariant<int32> TempLB = TempLA;
auto ReturnLB = TempLB.Visit(TestQualifiers);
always_check((TIsSame<int32, decltype(ReturnLB)>::Value));
bIsConst = false;
bIsLValue = false;
bIsRValue = true;
TVariant<int32> TempRA = 10;
auto ReturnRA = MoveTemp(TempRA).Visit(TestQualifiers);
always_check((TIsSame<int32, decltype(ReturnRA)>::Value));
bIsConst = true;
bIsLValue = false;
bIsRValue = true;
const TVariant<int32> TempRB = TempLA;
auto ReturnRB = MoveTemp(TempRB).Visit(TestQualifiers);
always_check((TIsSame<int32, decltype(ReturnRB)>::Value));
bIsConst = false;
bIsLValue = true;
bIsRValue = false;
TVariant<int32> TempLC = 10;
auto ReturnLC = TempLC.Visit<int32>(TestQualifiers);
always_check((TIsSame<int32, decltype(ReturnLC)>::Value));
bIsConst = true;
bIsLValue = true;
bIsRValue = false;
const TVariant<int32> TempLD = TempLC;
auto ReturnLD = TempLD.Visit<int32>(TestQualifiers);
always_check((TIsSame<int32, decltype(ReturnLD)>::Value));
bIsConst = false;
bIsLValue = false;
bIsRValue = true;
TVariant<int32> TempRC = 10;
auto ReturnRC = MoveTemp(TempRC).Visit<int32>(TestQualifiers);
always_check((TIsSame<int32, decltype(ReturnRC)>::Value));
bIsConst = true;
bIsLValue = false;
bIsRValue = true;
const TVariant<int32> TempRD = TempLC;
auto ReturnRD = MoveTemp(TempRD).Visit<int32>(TestQualifiers);
always_check((TIsSame<int32, decltype(ReturnRD)>::Value));
}
NAMESPACE_UNNAMED_BEGIN
template <typename T>