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35ada5d851
tomlplusplus/tests/tests.h
Mark Gillard 9afa43e7c2 fixed leading/trailing newlines with printing to ostreams (fixes #48) 
also:
- change internal nan constant to match qNaN bits on x86/ARM
2020-07-21 16:11:32 +03:00

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8.2 KiB
C++
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// This file is a part of toml++ and is subject to the the terms of the MIT license.
// Copyright (c) 2019-2020 Mark Gillard <mark.gillard@outlook.com.au>
// See https://github.com/marzer/tomlplusplus/blob/master/LICENSE for the full license text.
// SPDX-License-Identifier: MIT
#pragma once
#include "settings.h"
#if USE_TARTANLLAMA_OPTIONAL
#include "tloptional.h"
#endif
#include "evil_macros.h"
#if USE_SINGLE_HEADER
#include "../toml.hpp"
#else
#include "../include/toml++/toml.h"
#endif
TOML_PUSH_WARNINGS
TOML_DISABLE_ALL_WARNINGS
#include "catch2.h"
#include <sstream>
namespace toml {}
using namespace Catch::literals;
using namespace toml;
TOML_POP_WARNINGS
#define FILE_LINE_ARGS std::string_view{ __FILE__ }, __LINE__
#define BOM_PREFIX "\xEF\xBB\xBF"
#if TOML_EXCEPTIONS
#define FORCE_FAIL(...) FAIL(__VA_ARGS__)
#else
#define FORCE_FAIL(...) \
do \
{ \
FAIL(__VA_ARGS__); \
std::exit(-1); \
TOML_UNREACHABLE; \
} \
while (false)
#endif
[[nodiscard]]
TOML_ATTR(const)
inline double make_infinity(int sign = 1) noexcept
{
constexpr uint64_t pos_inf = 0b0111111111110000000000000000000000000000000000000000000000000000ull;
constexpr uint64_t neg_inf = 0b1111111111110000000000000000000000000000000000000000000000000000ull;
double val;
std::memcpy(&val, sign >= 0 ? &pos_inf : &neg_inf, sizeof(double));
return val;
}
[[nodiscard]]
TOML_ATTR(const)
inline double make_nan() noexcept
{
constexpr uint64_t qnan = 0b1111111111111000000000000000000000000000000000000000000000000001ull;
double val;
std::memcpy(&val, &qnan, sizeof(double));
return val;
}
// function_view - adapted from here: https://vittorioromeo.info/index/blog/passing_functions_to_functions.html
template <typename Func>
class function_view;
template <typename R, typename... P>
class function_view<R(P...)> final
{
private:
using func_type = R(P...);
using eraser_func_type = R(void*, P&&...);
mutable void* ptr_ = {};
mutable eraser_func_type* eraser = {};
public:
function_view() noexcept = default;
template <typename T>
function_view(T&& x) noexcept
: ptr_{ reinterpret_cast<void*>(std::addressof(x)) }
{
eraser = [](void* ptr, P&&... xs) -> R
{
return (*reinterpret_cast<std::add_pointer_t<std::remove_reference_t<T>>>(ptr))(std::forward<P>(xs)...);
};
}
decltype(auto) operator()(P&&... xs) const
{
return eraser(ptr_, std::forward<P>(xs)...);
}
[[nodiscard]] operator bool() const noexcept { return !!ptr_; }
};
using pss_func = function_view<void(toml::table&&)>;
bool parsing_should_succeed(
std::string_view test_file,
uint32_t test_line,
std::string_view toml_str,
pss_func&& func = {},
std::string_view source_path = {});
bool parsing_should_fail(
std::string_view test_file,
uint32_t test_line,
std::string_view toml_str);
TOML_PUSH_WARNINGS
TOML_DISABLE_ARITHMETIC_WARNINGS
template <typename T>
inline bool parse_expected_value(
std::string_view test_file,
uint32_t test_line,
std::string_view value_str,
const T& expected)
{
INFO("["sv << test_file << ", line "sv << test_line << "] "sv << "parse_expected_value(\""sv << value_str << "\")"sv)
std::string val;
static constexpr auto key = "val = "sv;
val.reserve(key.length() + value_str.length());
val.append(key);
val.append(value_str);
static constexpr auto is_val = [](char32_t codepoint)
{
if constexpr (impl::node_type_of<T> == node_type::string)
return codepoint == U'"' || codepoint == U'\'';
else
return !impl::is_whitespace(codepoint);
};
source_position pos{ 1, static_cast<source_index>(key.length()) };
source_position begin{}, end{};
{
impl::utf8_decoder decoder;
for (auto c : value_str)
{
decoder(static_cast<uint8_t>(c));
if (!decoder.has_code_point())
continue;
if (impl::is_line_break(decoder.codepoint))
{
if (decoder.codepoint != U'\r')
{
pos.line++;
pos.column = source_index{ 1 };
}
continue;
}
pos.column++;
if (is_val(decoder.codepoint))
{
if (!begin)
begin = pos;
else
end = pos;
}
}
if (!end)
end = begin;
end.column++;
}
using value_type = impl::native_type_of<impl::remove_cvref_t<T>>;
value<value_type> val_parsed;
{
INFO("["sv << test_file << ", line "sv << test_line << "] "sv << "parse_expected_value: Checking initial parse"sv)
bool stolen_value = false; // parsing_should_succeed invokes the functor more than once
const auto result = parsing_should_succeed(
test_file,
test_line,
std::string_view{ val },
[&](table&& tbl)
{
REQUIRE(tbl.size() == 1);
auto nv = tbl["val"sv];
REQUIRE(nv);
REQUIRE(nv.is<value_type>());
REQUIRE(nv.as<value_type>());
REQUIRE(nv.type() == impl::node_type_of<T>);
REQUIRE(nv.node());
REQUIRE(nv.node()->is<value_type>());
REQUIRE(nv.node()->as<value_type>());
REQUIRE(nv.node()->type() == impl::node_type_of<T>);
// check the raw value
REQUIRE(nv.node()->value<value_type>() == expected);
REQUIRE(nv.node()->value_or(T{}) == expected);
REQUIRE(nv.as<value_type>()->get() == expected);
REQUIRE(nv.value<value_type>() == expected);
REQUIRE(nv.value_or(T{}) == expected);
REQUIRE(nv.ref<value_type>() == expected);
REQUIRE(nv.node()->ref<value_type>() == expected);
// check the table relops
REQUIRE(tbl == table{ { { "val"sv, expected } } });
REQUIRE(!(tbl != table{ { { "val"sv, expected } } }));
// check the value relops
REQUIRE(*nv.as<value_type>() == expected);
REQUIRE(expected == *nv.as<value_type>());
REQUIRE(!(*nv.as<value_type>() != expected));
REQUIRE(!(expected != *nv.as<value_type>()));
// check the node_view relops
REQUIRE(nv == expected);
REQUIRE(expected == nv);
REQUIRE(!(nv != expected));
REQUIRE(!(expected != nv));
// make sure source info is correct
REQUIRE(nv.node()->source().begin == begin);
REQUIRE(nv.node()->source().end == end);
// steal the val for round-trip tests
if (!stolen_value)
{
val_parsed = std::move(*nv.as<value_type>());
stolen_value = true;
}
}
);
if (!result)
return false;
}
// check round-tripping
{
INFO("["sv << test_file << ", line "sv << test_line << "] "sv << "parse_expected_value: Checking round-trip"sv)
{
std::string str;
{
auto tbl = table{ { { "val"sv, *val_parsed } } };
std::ostringstream ss;
ss << tbl;
str = std::move(ss).str();
}
bool value_ok = true;
const auto parse_ok = parsing_should_succeed(
test_file,
test_line,
std::string_view{ str },
[&](table&& tbl)
{
REQUIRE(tbl.size() == 1);
auto nv = tbl["val"sv];
REQUIRE(nv);
REQUIRE(nv.as<value_type>());
REQUIRE(nv.node()->type() == impl::node_type_of<T>);
if (value_ok && nv.ref<value_type>() != expected)
{
value_ok = false;
FORCE_FAIL("Value was not the same after round-tripping"sv);
}
}
);
if (!parse_ok || value_ok)
return false;
}
}
return true;
}
// manually instantiate some templates to reduce obj bloat and test compilation time
extern template bool parse_expected_value(std::string_view, uint32_t, std::string_view, const int&);
extern template bool parse_expected_value(std::string_view, uint32_t, std::string_view, const unsigned int&);
extern template bool parse_expected_value(std::string_view, uint32_t, std::string_view, const bool&);
extern template bool parse_expected_value(std::string_view, uint32_t, std::string_view, const float&);
extern template bool parse_expected_value(std::string_view, uint32_t, std::string_view, const double&);
extern template bool parse_expected_value(std::string_view, uint32_t, std::string_view, const std::string_view&);
namespace std
{
extern template class unique_ptr<const Catch::IExceptionTranslator>;
}
namespace Catch
{
extern template struct StringMaker<node_view<node>>;
extern template struct StringMaker<node_view<const node>>;
extern template ReusableStringStream& ReusableStringStream::operator << (node_view<node> const&);
extern template ReusableStringStream& ReusableStringStream::operator << (node_view<const node> const&);
namespace Detail
{
extern template std::string stringify(const node_view<node>&);
extern template std::string stringify(const node_view<const node>&);
}
}
TOML_POP_WARNINGS // TOML_DISABLE_ARITHMETIC_WARNINGS
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