#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable : 4643) // Forward declaring 'X' in namespace std is not permitted.
// NOLINTBEGIN(cert-dcl58-cpp)
namespace std {
template <typename>
struct char_traits;
template <typename, typename>
class basic_ostream;
typedef basic_ostream<char, char_traits<char>> ostream; // NOLINT(modernize-use-using)
template <class TRAITS>
basic_ostream<char, TRAITS> &operator<<(basic_ostream<char, TRAITS> &, const char *);
} // namespace std
// NOLINTEND(cert-dcl58-cpp)
#pragma warning(pop)
#else
#include <iostream>
#endif

namespace N {
struct A {};
struct B {
    friend std::ostream &operator<<(std::ostream &os, const B &) {
        return os << "B";
    }
};
struct C {};
static std::ostream &operator<<(std::ostream &os, const C &) {
    return os << "C";
}
} // namespace N

static std::ostream &operator<<(std::ostream &os, const N::A &) {
    return os << "A";
}

#include <doctest/doctest.h>

#include <utility>

TEST_CASE("operator<<") {
    MESSAGE(N::A{});
    MESSAGE(N::B{});
    MESSAGE(N::C{});
}

#include "header.h"

// std::move is broken with VS <= 15
#if defined(_MSC_VER) && _MSC_VER <= 1900
#define MOVE(...) __VA_ARGS__
#else
#define MOVE std::move
#endif

TEST_CASE("no headers") {
    const char chs[] = {'1', 'a', 's'}; // NOLINT(*-avoid-c-arrays)
    MESSAGE(chs);
    CHECK(chs == nullptr);
    MESSAGE("1as");
    CHECK("1as" == nullptr);

    int ints[] = {0, 1, 1, 2, 3, 5, 8, 13}; // NOLINT(*-avoid-c-arrays)
    MESSAGE(ints);
    CHECK(ints == nullptr);
    MESSAGE(MOVE(ints)); // NOLINT(*-move-const-arg)

    char *cptr = reinterpret_cast<char *>(ints + 4); // NOLINT
    const char *ccptr = cptr;
    void *vptr = reinterpret_cast<void *>(cptr); // NOLINT
    CHECK(doctest::toString(cptr) == doctest::toString(ccptr));
    CHECK(doctest::toString(ccptr) == doctest::toString(vptr));

    const char *cnptr = nullptr;
    MESSAGE(cnptr);
    CHECK(cnptr != nullptr);

    enum Test { // NOLINT(cert-int09-c, readability-enum-initial-value)
        A = 0,
        B,
        C = 100,
    };
    MESSAGE(A);
    CHECK(A == C);

    MESSAGE(doctest::toString<int>());
}

#include <string>
#include <vector>
#include <list>
#include <sstream>
#include <limits>

DOCTEST_MSVC_SUPPRESS_WARNING(5045) // Spectre mitigation diagnostics

// the standard forbids writing in the std namespace but it works on all compilers
// NOLINTBEGIN(cert-dcl58-cpp)
namespace std {
template <typename T>
ostream &operator<<(ostream &stream, const vector<T> &in) { // NOLINT(bugprone-std-namespace-modification)
    stream << "[";
    for (size_t i = 0; i < in.size(); ++i) {
        if (i != 0) {
            stream << ", ";
        }
        stream << in[i];
    }
    stream << "]";
    return stream;
}
} // namespace std
// NOLINTEND(cert-dcl58-cpp)

// as an alternative you may write a specialization of doctest::StringMaker
namespace doctest {
template <typename T>
struct StringMaker<std::list<T>> {
    static String convert(const std::list<T> &in) {
        std::ostringstream oss;

        oss << "[";
        // NOLINTNEXTLINE(*-use-auto)
        for (typename std::list<T>::const_iterator it = in.begin(); it != in.end();) {
            oss << *it;
            if (++it != in.end()) {
                oss << ", ";
            }
        }
        oss << "]";
        return oss.str().c_str();
    }
};
} // namespace doctest

template <typename T, typename K>
struct MyType {
    T one;
    K two;
};

template <typename T>
struct MyTypeInherited : MyType<T, unsigned> {};

template <typename T, typename K>
bool operator==(const MyType<T, K> &lhs, const MyType<T, K> &rhs) {
    return lhs.one == rhs.one && lhs.two == rhs.two;
}

template <typename T, typename K>
std::ostream &operator<<(std::ostream &stream, const MyType<T, K> &in) {
    stream << "[" << in.one << ", " << in.two << "]";
    return stream;
}

namespace Bar {
struct Foo {
    friend bool operator==(const Foo &, const Foo &) {
        return false;
    }
};

// as a third option you may provide an overload of toString()
inline doctest::String toString(const Foo &) {
    return "Foo{}";
}

struct MyOtherType {
    int data;
    friend bool operator==(const MyOtherType &l, const MyOtherType &r) {
        return l.data == r.data;
    }
};

// you also can use a template operator<< if your code does not use std::ostream
template <class OStream>
OStream &operator<<(OStream &stream, const MyOtherType &in) {
    stream << "MyOtherType: " << in.data;
    return stream;
}

} // namespace Bar

// set an exception translator for MyTypeInherited<int>
REGISTER_EXCEPTION_TRANSLATOR(MyTypeInherited<int> &ex) {
    return doctest::String("MyTypeInherited<int>(") + doctest::toString(ex.one) + ", " + doctest::toString(ex.two) +
           ")";
}

#define CHECK_NOT_DEFAULT_STR(var) CHECK(toString(var) != "{?}")

TEST_CASE("all asserts should fail and show how the objects get stringified") {
    MyTypeInherited<int> bla1;
    bla1.one = 5;
    bla1.two = 4u;

    const Bar::Foo f1;
    MESSAGE(f1);
    const Bar::Foo f2;
    CHECK(f1 == f2);

    const doctest::String str;
    CHECK(str == doctest::toString(str));

    // std::string already has an operator<< working with std::ostream
    // NOLINTNEXTLINE(bugprone-unintended-char-ostream-output, bugprone-unused-local-non-trivial-variable)
    const std::string dummy = "omg";

    MESSAGE(dummy);

    CHECK(dummy == "tralala"); // should fail
    CHECK("tralala" == dummy); // should fail

    std::vector<int> vec1;
    vec1.push_back(1);
    vec1.push_back(2);
    vec1.push_back(3);

    MESSAGE(vec1);

    std::vector<int> vec2;
    vec2.push_back(1);
    vec2.push_back(2);
    vec2.push_back(4);

    CHECK(vec1 == vec2);

    std::list<int> lst_1;
    lst_1.push_back(1);
    lst_1.push_back(42);
    lst_1.push_back(3);

    MESSAGE(lst_1);

    std::list<int> lst_2;
    lst_2.push_back(1);
    lst_2.push_back(2);
    lst_2.push_back(666);

    CHECK(lst_1 == lst_2);

    {
        const Bar::MyOtherType s1{42};
        const Bar::MyOtherType s2{666};
        INFO("s1=", s1, " s2=", s2);
        CHECK(s1 == s2);
        CHECK_MESSAGE(s1 == s2, s1, " is not really ", s2);
    }

    CHECK_NOT_DEFAULT_STR(doctest::IsNaN<double>(0.5));
    CHECK_NOT_DEFAULT_STR(!doctest::IsNaN<float>(std::numeric_limits<float>::infinity()));
    CHECK_NOT_DEFAULT_STR(doctest::IsNaN<double long>(std::numeric_limits<double long>::quiet_NaN()));

    CHECK("a" == doctest::Contains("aaa"));

    // lets see if this exception gets translated
    throw_if(true, bla1);
}

static doctest::String intTranslator(int ex) {
    return doctest::String("int: ") + doctest::toString(ex);
}

TEST_CASE("a test case that registers an exception translator for int and then throws one") {
    // set an exception translator for int - note that this shouldn't be done in a test case but
    // in main() or somewhere before executing the tests - but here I'm just lazy...
    doctest::registerExceptionTranslator(intTranslator);

    throw_if(true, 5);
}

static void function() {}
static int ***function2() {
    return nullptr;
}

TEST_CASE("pointer comparisons") {
    int i = 42;
    int *a = &i;
    int *b = a; // NOLINT(misc-const-correctness)

    CHECK(a == b);
    CHECK_EQ(a, b);

    void (*functionPointer)() = &function;
    CHECK(&function == functionPointer);
    CHECK(&function2 == &function2);

    // NOLINTBEGIN(misc-const-correctness)
    volatile int i_2 = 30;
    volatile int *a_2 = &i_2;
    volatile int *b_2 = a_2;
    // NOLINTEND(misc-const-correctness)

    CHECK(a_2 == b_2);
    CHECK_EQ(a_2, b_2);
}

enum class Foo {};

static std::ostream &operator<<(std::ostream &os, Foo) {
    return os << "Foo";
}

TEST_CASE("enum with operator<<") {
    CHECK(doctest::toString(Foo()) == "Foo");
}
