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#include <catch2/catch.hpp>
#include <iostream>
#include <vcpkg/base/json.h>
#include <vcpkg/base/unicode.h>
#include "math.h"
// TODO: remove this once we switch to C++20 completely
// This is the worst, but we also can't really deal with it any other way.
#if __cpp_char8_t
template<size_t Sz>
static auto _u8_string_to_char_string(const char8_t (&literal)[Sz]) -> const char (&)[Sz]
{
return reinterpret_cast<const char(&)[Sz]>(literal);
}
#define U8_STR(s) (::vcpkg::Unicode::_u8_string_to_char_string(u8"" s))
#else
#define U8_STR(s) (u8"" s)
#endif
namespace Json = vcpkg::Json;
using Json::Value;
static std::string mystringify(const Value& val) { return Json::stringify(val, Json::JsonStyle{}); }
TEST_CASE ("JSON stringify weird strings", "[json]")
{
vcpkg::StringView str = U8_STR("😀 😁 😂 🤣 😃 😄 😅 😆 😉");
REQUIRE(mystringify(Value::string(str)) == ('"' + str.to_string() + '"'));
REQUIRE(mystringify(Value::string("\xED\xA0\x80")) == "\"\\ud800\""); // unpaired surrogate
}
TEST_CASE ("JSON parse keywords", "[json]")
{
auto res = Json::parse("true");
REQUIRE(res);
REQUIRE(res.get()->first.is_boolean());
REQUIRE(res.get()->first.boolean());
res = Json::parse(" false ");
REQUIRE(res);
REQUIRE(res.get()->first.is_boolean());
REQUIRE(!res.get()->first.boolean());
res = Json::parse(" null\t ");
REQUIRE(res);
REQUIRE(res.get()->first.is_null());
}
TEST_CASE ("JSON parse strings", "[json]")
{
auto res = Json::parse(R"("")");
REQUIRE(res);
REQUIRE(res.get()->first.is_string());
REQUIRE(res.get()->first.string().size() == 0);
res = Json::parse(R"("\ud800")"); // unpaired surrogate
REQUIRE(res);
REQUIRE(res.get()->first.is_string());
REQUIRE(res.get()->first.string() == "\xED\xA0\x80");
const auto make_json_string = [](vcpkg::StringView sv) { return '"' + sv.to_string() + '"'; };
const vcpkg::StringView radical = U8_STR("⎷");
const vcpkg::StringView grin = U8_STR("😁");
res = Json::parse(R"("\uD83D\uDE01")"); // paired surrogates for grin
REQUIRE(res);
REQUIRE(res.get()->first.is_string());
REQUIRE(res.get()->first.string() == grin.to_string());
res = Json::parse(make_json_string(radical)); // character in BMP
REQUIRE(res);
REQUIRE(res.get()->first.is_string());
REQUIRE(res.get()->first.string() == radical);
res = Json::parse(make_json_string(grin)); // character above BMP
REQUIRE(res);
REQUIRE(res.get()->first.is_string());
REQUIRE(res.get()->first.string() == grin);
}
TEST_CASE ("JSON parse integers", "[json]")
{
auto res = Json::parse("0");
REQUIRE(res);
REQUIRE(res.get()->first.is_integer());
REQUIRE(res.get()->first.integer() == 0);
res = Json::parse("12345");
REQUIRE(res);
REQUIRE(res.get()->first.is_integer());
REQUIRE(res.get()->first.integer() == 12345);
res = Json::parse("-12345");
REQUIRE(res);
REQUIRE(res.get()->first.is_integer());
REQUIRE(res.get()->first.integer() == -12345);
res = Json::parse("9223372036854775807"); // INT64_MAX
REQUIRE(res);
REQUIRE(res.get()->first.is_integer());
REQUIRE(res.get()->first.integer() == 9223372036854775807);
res = Json::parse("-9223372036854775808");
REQUIRE(res);
REQUIRE(res.get()->first.is_integer());
REQUIRE(res.get()->first.integer() == (-9223372036854775807 - 1)); // INT64_MIN (C++'s parser is fun)
}
TEST_CASE ("JSON parse floats", "[json]")
{
auto res = Json::parse("0.0");
REQUIRE(res);
REQUIRE(res.get()->first.is_number());
REQUIRE(!res.get()->first.is_integer());
REQUIRE(res.get()->first.number() == 0.0);
REQUIRE(!signbit(res.get()->first.number()));
res = Json::parse("-0.0");
REQUIRE(res);
REQUIRE(res.get()->first.is_number());
REQUIRE(res.get()->first.number() == 0.0);
REQUIRE(signbit(res.get()->first.number()));
res = Json::parse("12345.6789");
REQUIRE(res);
REQUIRE(res.get()->first.is_number());
REQUIRE_THAT(res.get()->first.number(), Catch::WithinULP(12345.6789, 3));
res = Json::parse("-12345.6789");
REQUIRE(res);
REQUIRE(res.get()->first.is_number());
REQUIRE_THAT(res.get()->first.number(), Catch::WithinULP(-12345.6789, 3));
}
TEST_CASE ("JSON parse arrays", "[json]")
{
auto res = Json::parse("[]");
REQUIRE(res);
auto val = std::move(res.get()->first);
REQUIRE(val.is_array());
REQUIRE(val.array().size() == 0);
res = Json::parse("[123]");
REQUIRE(res);
val = std::move(res.get()->first);
REQUIRE(val.is_array());
REQUIRE(val.array().size() == 1);
REQUIRE(val.array()[0].is_integer());
REQUIRE(val.array()[0].integer() == 123);
res = Json::parse("[123, 456]");
REQUIRE(res);
val = std::move(res.get()->first);
REQUIRE(val.is_array());
REQUIRE(val.array().size() == 2);
REQUIRE(val.array()[0].is_integer());
REQUIRE(val.array()[0].integer() == 123);
REQUIRE(val.array()[1].is_integer());
REQUIRE(val.array()[1].integer() == 456);
res = Json::parse("[123, 456, [null]]");
REQUIRE(res);
val = std::move(res.get()->first);
REQUIRE(val.is_array());
REQUIRE(val.array().size() == 3);
REQUIRE(val.array()[2].is_array());
REQUIRE(val.array()[2].array().size() == 1);
REQUIRE(val.array()[2].array()[0].is_null());
}
TEST_CASE ("JSON parse objects", "[json]")
{
auto res = Json::parse("{}");
REQUIRE(res);
auto val = std::move(res.get()->first);
REQUIRE(val.is_object());
REQUIRE(val.object().size() == 0);
}
TEST_CASE ("JSON parse full file", "[json]")
{
vcpkg::StringView json =
#include "large-json-document.json.inc"
;
auto res = Json::parse(json);
if (!res) {
std::cerr << res.error()->format() << '\n';
}
REQUIRE(res);
}
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