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#ifndef TEST_SUPPORT_VERBOSE_ASSERT
#define TEST_SUPPORT_VERBOSE_ASSERT
#include <iostream>
#include <cstdio>
#include <sstream>
#include <string>
#include "test_macros.h"
namespace verbose_assert {
typedef std::basic_ostream<char>&(EndLType)(std::basic_ostream<char>&);
template <class Stream, class Tp,
class = decltype(std::declval<Stream&>() << std::declval<Tp const&>())>
std::true_type IsStreamableImp(int);
template <class Stream, class Tp> std::false_type IsStreamableImp(long);
template <class Stream, class Tp>
struct IsStreamable : decltype(IsStreamableImp<Stream, Tp>(0)) {};
template <class Tp, int ST = (IsStreamable<decltype(std::cerr), Tp>::value ? 1
: (IsStreamable<decltype(std::wcerr), Tp>::value ? 2 : -1))>
struct SelectStream {
static_assert(ST == -1, "specialization required for ST != -1");
static void Print(Tp const&) { std::clog << "Value Not Streamable!\n"; }
};
template <class Tp>
struct SelectStream<Tp, 1> {
static void Print(Tp const& val) { std::cerr << val; }
};
template <class Tp>
struct SelectStream<Tp, 2> {
static void Print(Tp const& val) { std::wcerr << val; }
};
struct AssertData {
AssertData(const char* xcheck, const char* xfile, const char* xfunc,
unsigned long xline, bool xpassed = true)
: passed(xpassed), check(xcheck), file(xfile), func(xfunc), line(xline),
msg() {}
AssertData& SetFailed(std::string xmsg = std::string()) {
msg = xmsg;
passed = false;
return *this;
}
void PrintFailed() const {
std::fprintf(stderr, "%s:%lu %s: Assertion '%s' failed.\n", file, line,
func, check);
if (!msg.empty())
std::fprintf(stderr, "%s\n", msg.data());
}
bool passed;
const char* check;
const char* file;
const char* func;
unsigned long line;
std::string msg;
};
// AssertHandler is the class constructed by failing CHECK macros. AssertHandler
// will log information about the failures and abort when it is destructed.
class AssertHandler {
public:
AssertHandler(AssertData const& Data)
: passed(Data.passed) {
if (!passed)
Data.PrintFailed();
}
~AssertHandler() TEST_NOEXCEPT_FALSE {
if (!passed) {
error_log << std::endl;
std::abort();
}
}
class LogType {
friend class AssertHandler;
template <class Tp>
friend LogType& operator<<(LogType& log, Tp const& value) {
if (!log.is_disabled) {
SelectStream<Tp>::Print(value);
}
return log;
}
friend LogType& operator<<(LogType& log, EndLType* m) {
if (!log.is_disabled) {
SelectStream<EndLType*>::Print(m);
}
return log;
}
private:
LogType(bool disable) : is_disabled(disable) {}
bool is_disabled;
LogType(LogType const&);
LogType& operator=(LogType const&);
};
LogType& GetLog() {
if (passed)
return null_log;
return error_log;
}
private:
static LogType null_log;
static LogType error_log;
AssertHandler& operator=(const AssertHandler&) = delete;
AssertHandler(const AssertHandler&) = delete;
AssertHandler() = delete;
private:
bool passed;
};
AssertHandler::LogType AssertHandler::null_log(true);
AssertHandler::LogType AssertHandler::error_log(false);
template <class It1>
std::string PrintRange(const char* Name, It1 F, It1 E) {
std::stringstream ss;
ss << " " << Name << " = [";
while (F != E) {
ss << *F;
++F;
if (F != E)
ss << ", ";
}
ss << "]\n";
return ss.str();
}
template <class Tp, class Up>
std::string PrintMismatch(Tp const& LHS, Up const& RHS, int Elem) {
std::stringstream ss;
ss << " Element " << Elem << " mismatched: `" << LHS << "` != `" << RHS
<< "`!\n";
return ss.str();
};
struct EqualToComp {
template <class Tp, class Up>
bool operator()(Tp const& LHS, Up const& RHS) const {
return LHS == RHS;
}
};
template <class It1, class It2, class Comp>
AssertData CheckCollectionsEqual(It1 F1, It1 E1, It2 F2, It2 E2,
AssertData Data, Comp C = EqualToComp()) {
const It1 F1Orig = F1;
const It2 F2Orig = F2;
bool Failed = false;
std::string ErrorMsg;
int Idx = 0;
while (F1 != E1 && F2 != E2) {
if (!(C(*F1, *F2))) {
ErrorMsg += PrintMismatch(*F1, *F2, Idx);
Failed = true;
break;
}
++Idx;
++F1;
++F2;
}
if (!Failed && (F1 != E1 || F2 != E2)) {
ErrorMsg += " Ranges have different sizes!\n";
Failed = true;
}
if (Failed) {
ErrorMsg += PrintRange("LHS", F1Orig, E1);
ErrorMsg += PrintRange("RHS", F2Orig, E2);
Data.SetFailed(ErrorMsg);
}
return Data;
}
} // namespace verbose_assert
#ifdef __GNUC__
#define ASSERT_FN_NAME() __PRETTY_FUNCTION__
#else
#define ASSERT_FN_NAME() __func__
#endif
#define DISPLAY(...) " " #__VA_ARGS__ " = " << (__VA_ARGS__) << "\n"
#define ASSERT(...) \
::verbose_assert::AssertHandler(::verbose_assert::AssertData( \
#__VA_ARGS__, __FILE__, ASSERT_FN_NAME(), __LINE__,(__VA_ARGS__))).GetLog()
#define ASSERT_EQ(LHS, RHS) \
ASSERT(LHS == RHS) << DISPLAY(LHS) << DISPLAY(RHS)
#define ASSERT_NEQ(LHS, RHS) \
ASSERT(LHS != RHS) << DISPLAY(LHS) << DISPLAY(RHS)
#define ASSERT_PRED(PRED, LHS, RHS) \
ASSERT(PRED(LHS, RHS)) << DISPLAY(LHS) << DISPLAY(RHS)
#define ASSERT_COLLECTION_EQ_COMP(F1, E1, F2, E2, Comp) \
(::verbose_assert::AssertHandler( \
::verbose_assert::CheckCollectionsEqual( \
F1, E1, F2, E2, \
::verbose_assert::AssertData("CheckCollectionsEqual(" #F1 ", " #E1 \
", " #F2 ", " #E2 ")", \
__FILE__, ASSERT_FN_NAME(), __LINE__), \
Comp)) \
.GetLog())
#define ASSERT_COLLECTION_EQ(F1, E1, F2, E2) \
ASSERT_COLLECTION_EQ_COMP(F1, E1, F2, E2, ::verbose_assert::EqualToComp())
#endif
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