#ifndef TEST_ASSERT_H

#define TEST_ASSERT_H

#include "flatbuffers/base.h"

#include "flatbuffers/util.h"

// clang-format off

#ifdef __ANDROID__

  #include <android/log.h>

  #define TEST_OUTPUT_LINE(...) \

      __android_log_print(ANDROID_LOG_INFO, "FlatBuffers", __VA_ARGS__)

  #define FLATBUFFERS_NO_FILE_TESTS

#else

  #define TEST_OUTPUT_LINE(...) \

      do { printf(__VA_ARGS__); printf("\n"); } while(!IsConstTrue(true))

#endif

#define TEST_EQ(exp, val) TestEq(exp, val, "'" #exp "' != '" #val "'", __FILE__, __LINE__, "")

#define TEST_NE(exp, val) TestNe(exp, val, "'" #exp "' == '" #val "'", __FILE__, __LINE__, "")

#define TEST_ASSERT(val)  TestEq(true, !!(val), "'" "true" "' != '" #val "'", __FILE__, __LINE__, "")

#define TEST_NULL(val) TestEq(true, (val) == nullptr, "'" "nullptr" "' != '" #val "'", __FILE__, __LINE__, "")

#define TEST_NOTNULL(val) TestEq(true, (val) != nullptr, "'" "nullptr" "' == '" #val "'", __FILE__, __LINE__, "")

#define TEST_EQ_STR(exp, val) TestEqStr(exp, val, "'" #exp "' != '" #val "'", __FILE__, __LINE__, "")

#ifdef _WIN32

  #define TEST_ASSERT_FUNC(val) TestEq(true, !!(val), "'" "true" "' != '" #val "'", __FILE__, __LINE__, __FUNCTION__)

  #define TEST_EQ_FUNC(exp, val) TestEq(exp, val, "'" #exp "' != '" #val "'", __FILE__, __LINE__, __FUNCTION__)

#else

  #define TEST_ASSERT_FUNC(val) TestEq(true, !!(val), "'" "true" "' != '" #val "'", __FILE__, __LINE__, __PRETTY_FUNCTION__)

  #define TEST_EQ_FUNC(exp, val) TestEq(exp, val, "'" #exp "' != '" #val "'", __FILE__, __LINE__, __PRETTY_FUNCTION__)

#endif

// clang-format on

extern int testing_fails;

// Listener of TestFail, like 'gtest::OnTestPartResult' event handler.

// Called in TestFail after a failed assertion.

typedef bool (*TestFailEventListener)(const char *expval, const char *val,

                                      const char *exp, const char *file,

                                      int line, const char *func);

// Prepare test engine (MSVC assertion setup, etc).

// listener - this function will be notified on each TestFail call.

void InitTestEngine(TestFailEventListener listener = nullptr);

// Release all test-engine resources.

// Prints or schedule a debug report if all test passed.

// Returns 0 if all tests passed or 1 otherwise.

// Memory leak report: FLATBUFFERS_MEMORY_LEAK_TRACKING && _MSC_VER && _DEBUG.

int CloseTestEngine(bool force_report = false);

// Write captured state to a log and terminate test run.

void TestFail(const char *expval, const char *val, const char *exp,

              const char *file, int line, const char *func = nullptr);

void TestEqStr(const char *expval, const char *val, const char *exp,

               const char *file, int line, const char *func = nullptr);

// Workaround for `enum class` printing.

// There is an issue with the printing of enums with a fixed underlying type.

// These enums are generated by `flatc` if `--scoped-enums` is active.

// All modern compilers have problems with `std::stringstream&<<(T v)` if T is

// an enum with fixed type. For details see DR1601:

// http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#1601

// https://stackoverflow.com/questions/34336024/ambiguous-overload-when-writing-an-enum-with-an-enum-base-but-only-with-clang

template<typename T, bool is_enum_type = flatbuffers::is_enum<T>::value>

struct underlying_of_scalar {

  static_assert(flatbuffers::is_scalar<T>::value, "invalid type T");

  typedef T type;

};

template<typename T> struct underlying_of_scalar<T, true> {

// clang-format off

  // There are old compilers without full C++11 support (see stl_emulation.h).

  #if defined(FLATBUFFERS_TEMPLATES_ALIASES)

  using type = typename std::underlying_type<T>::type;

  #else

  typedef int64_t type;

  #endif

  // clang-format on

};

template<typename T>

typename underlying_of_scalar<T>::type scalar_as_underlying(T v) {

  return static_cast<typename underlying_of_scalar<T>::type>(v);

}

template<typename T, typename U>

void TestEq(T expval, U val, const char *exp, const char *file, int line,

            const char *func) {

  if (static_cast<U>(expval) != val) {

    TestFail(flatbuffers::NumToString(scalar_as_underlying(expval)).c_str(),

             flatbuffers::NumToString(scalar_as_underlying(val)).c_str(), exp,

             file, line, func);

  }

}

template<>

inline void TestEq<std::string, std::string>(std::string expval,

                                             std::string val, const char *exp,

                                             const char *file, int line,

                                             const char *func) {

  if (expval != val) {

    TestFail(expval.c_str(), val.c_str(), exp, file, line, func);

  }

}

template<typename T, typename U>

void TestNe(T expval, U val, const char *exp, const char *file, int line,

            const char *func) {

  if (static_cast<U>(expval) == val) {

    TestFail(flatbuffers::NumToString(scalar_as_underlying(expval)).c_str(),

             flatbuffers::NumToString(scalar_as_underlying(val)).c_str(), exp,

             file, line, func);

  }

}

template<>

inline void TestNe<std::string, std::string>(std::string expval,

                                             std::string val, const char *exp,

                                             const char *file, int line,

                                             const char *func) {

  if (expval == val) {

    TestFail(expval.c_str(), val.c_str(), exp, file, line, func);

  }

}

#endif  // !TEST_ASSERT_H