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#pragma once
#include <util/system/yassert.h>
namespace NTesting {
////////////////////////////////////////////////////////////////////////////////
// Below there is a serie of probe classes for testing construction/destruction copying/moving of class.
// for examples see tests in probe_ut.cpp
struct TProbeState {
int Constructors = 0;
int Destructors = 0;
int ShadowDestructors = 0;
int CopyConstructors = 0;
int CopyAssignments = 0;
int MoveConstructors = 0;
int MoveAssignments = 0;
int Touches = 0;
TProbeState() = default;
void Reset() {
*this = TProbeState{};
}
};
// Used for probing the number of copies that occur if a type must be coerced.
class TCoercibleToProbe {
public:
TProbeState* State;
TProbeState* ShadowState;
public:
explicit TCoercibleToProbe(TProbeState* state)
: State(state)
, ShadowState(state)
{}
private:
TCoercibleToProbe(const TCoercibleToProbe&);
TCoercibleToProbe(TCoercibleToProbe&&);
TCoercibleToProbe& operator=(const TCoercibleToProbe&);
TCoercibleToProbe& operator=(TCoercibleToProbe&&);
};
// Used for probing the number of copies in an argument.
class TProbe {
public:
TProbeState* State;
TProbeState* ShadowState;
public:
static TProbe ExplicitlyCreateInvalidProbe() {
return TProbe();
}
explicit TProbe(TProbeState* state)
: State(state)
, ShadowState(state)
{
Y_ASSERT(State);
++State->Constructors;
}
~TProbe() {
if (State) {
++State->Destructors;
}
if (ShadowState) {
++ShadowState->ShadowDestructors;
}
}
TProbe(const TProbe& other)
: State(other.State)
, ShadowState(other.ShadowState)
{
Y_ASSERT(State);
++State->CopyConstructors;
}
TProbe(TProbe&& other)
: State(other.State)
, ShadowState(other.ShadowState)
{
Y_ASSERT(State);
other.State = nullptr;
++State->MoveConstructors;
}
TProbe(const TCoercibleToProbe& other)
: State(other.State)
, ShadowState(other.ShadowState)
{
Y_ASSERT(State);
++State->CopyConstructors;
}
TProbe(TCoercibleToProbe&& other)
: State(other.State)
, ShadowState(other.ShadowState)
{
Y_ASSERT(State);
other.State = nullptr;
++State->MoveConstructors;
}
TProbe& operator=(const TProbe& other) {
State = other.State;
ShadowState = other.ShadowState;
Y_ASSERT(State);
++State->CopyAssignments;
return *this;
}
TProbe& operator=(TProbe&& other) {
State = other.State;
ShadowState = other.ShadowState;
Y_ASSERT(State);
other.State = nullptr;
++State->MoveAssignments;
return *this;
}
void Touch() const {
Y_ASSERT(State);
++State->Touches;
}
bool IsValid() const {
return nullptr != State;
}
private:
TProbe()
: State(nullptr)
{}
};
} // namespace NTesting
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