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Diffstat (limited to 'toolsrc/src/vcpkg-test/json.cpp')
| -rw-r--r-- | toolsrc/src/vcpkg-test/json.cpp | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/toolsrc/src/vcpkg-test/json.cpp b/toolsrc/src/vcpkg-test/json.cpp new file mode 100644 index 000000000..09f5d98fc --- /dev/null +++ b/toolsrc/src/vcpkg-test/json.cpp @@ -0,0 +1,159 @@ +#include <catch2/catch.hpp> + +#include <iostream> +#include <vcpkg/base/json.h> +#include <vcpkg/base/unicode.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 numbers", "[json]") +{ + auto res = Json::parse("0"); + REQUIRE(res); + REQUIRE(res.get()->first.is_number()); + REQUIRE(res.get()->first.number() == 0); + res = Json::parse("12345"); + REQUIRE(res); + REQUIRE(res.get()->first.is_number()); + REQUIRE(res.get()->first.number() == 12345); + res = Json::parse("-12345"); + REQUIRE(res); + REQUIRE(res.get()->first.is_number()); + REQUIRE(res.get()->first.number() == -12345); + res = Json::parse("9223372036854775807"); // INT64_MAX + REQUIRE(res); + REQUIRE(res.get()->first.is_number()); + REQUIRE(res.get()->first.number() == 9223372036854775807); + res = Json::parse("-9223372036854775808"); + REQUIRE(res); + REQUIRE(res.get()->first.is_number()); + REQUIRE(res.get()->first.number() == (-9223372036854775807 - 1)); // INT64_MIN (C++'s parser is fun) +} + +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_number()); + REQUIRE(val.array()[0].number() == 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_number()); + REQUIRE(val.array()[0].number() == 123); + REQUIRE(val.array()[1].is_number()); + REQUIRE(val.array()[1].number() == 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); + REQUIRE(res); +} |