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Diffstat (limited to 'src/fmt/test/xchar-test.cc')
| -rw-r--r-- | src/fmt/test/xchar-test.cc | 521 |
1 files changed, 521 insertions, 0 deletions
diff --git a/src/fmt/test/xchar-test.cc b/src/fmt/test/xchar-test.cc new file mode 100644 index 000000000..290042a63 --- /dev/null +++ b/src/fmt/test/xchar-test.cc @@ -0,0 +1,521 @@ +// Formatting library for C++ - formatting library tests +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#include "fmt/xchar.h" + +#include <complex> +#include <cwchar> +#include <vector> + +#include "fmt/chrono.h" +#include "fmt/color.h" +#include "fmt/ostream.h" +#include "fmt/ranges.h" +#include "gtest-extra.h" // Contains +#include "util.h" // get_locale + +using fmt::detail::max_value; +using testing::Contains; + +namespace test_ns { +template <typename Char> class test_string { + private: + std::basic_string<Char> s_; + + public: + test_string(const Char* s) : s_(s) {} + const Char* data() const { return s_.data(); } + size_t length() const { return s_.size(); } + operator const Char*() const { return s_.c_str(); } +}; + +template <typename Char> +fmt::basic_string_view<Char> to_string_view(const test_string<Char>& s) { + return {s.data(), s.length()}; +} + +struct non_string {}; +} // namespace test_ns + +template <typename T> class is_string_test : public testing::Test {}; + +using string_char_types = testing::Types<char, wchar_t, char16_t, char32_t>; +TYPED_TEST_SUITE(is_string_test, string_char_types); + +template <typename Char> +struct derived_from_string_view : fmt::basic_string_view<Char> {}; + +TYPED_TEST(is_string_test, is_string) { + EXPECT_TRUE(fmt::detail::is_string<TypeParam*>::value); + EXPECT_TRUE(fmt::detail::is_string<const TypeParam*>::value); + EXPECT_TRUE(fmt::detail::is_string<TypeParam[2]>::value); + EXPECT_TRUE(fmt::detail::is_string<const TypeParam[2]>::value); + EXPECT_TRUE(fmt::detail::is_string<std::basic_string<TypeParam>>::value); + EXPECT_TRUE(fmt::detail::is_string<fmt::basic_string_view<TypeParam>>::value); + EXPECT_TRUE( + fmt::detail::is_string<derived_from_string_view<TypeParam>>::value); + using fmt_string_view = fmt::detail::std_string_view<TypeParam>; + EXPECT_TRUE(std::is_empty<fmt_string_view>::value != + fmt::detail::is_string<fmt_string_view>::value); + EXPECT_TRUE(fmt::detail::is_string<test_ns::test_string<TypeParam>>::value); + EXPECT_FALSE(fmt::detail::is_string<test_ns::non_string>::value); +} + +// std::is_constructible is broken in MSVC until version 2015. +#if !FMT_MSC_VERSION || FMT_MSC_VERSION >= 1900 +struct explicitly_convertible_to_wstring_view { + explicit operator fmt::wstring_view() const { return L"foo"; } +}; + +TEST(xchar_test, format_explicitly_convertible_to_wstring_view) { + // Types explicitly convertible to wstring_view are not formattable by + // default because it may introduce ODR violations. + static_assert( + !fmt::is_formattable<explicitly_convertible_to_wstring_view>::value, ""); +} +#endif + +TEST(xchar_test, format) { + EXPECT_EQ(L"42", fmt::format(L"{}", 42)); + EXPECT_EQ(L"4.2", fmt::format(L"{}", 4.2)); + EXPECT_EQ(L"abc", fmt::format(L"{}", L"abc")); + EXPECT_EQ(L"z", fmt::format(L"{}", L'z')); + EXPECT_THROW(fmt::format(fmt::runtime(L"{:*\x343E}"), 42), fmt::format_error); + EXPECT_EQ(L"true", fmt::format(L"{}", true)); + EXPECT_EQ(L"a", fmt::format(L"{0}", 'a')); + EXPECT_EQ(L"a", fmt::format(L"{0}", L'a')); + EXPECT_EQ(L"Cyrillic letter \x42e", + fmt::format(L"Cyrillic letter {}", L'\x42e')); + EXPECT_EQ(L"abc1", fmt::format(L"{}c{}", L"ab", 1)); +} + +TEST(xchar_test, is_formattable) { + static_assert(!fmt::is_formattable<const wchar_t*>::value, ""); +} + +TEST(xchar_test, compile_time_string) { + EXPECT_EQ(fmt::format(fmt::wformat_string<int>(L"{}"), 42), L"42"); +#if defined(FMT_USE_STRING_VIEW) && FMT_CPLUSPLUS >= 201703L + EXPECT_EQ(fmt::format(FMT_STRING(std::wstring_view(L"{}")), 42), L"42"); +#endif +} + +#if FMT_CPLUSPLUS > 201103L +struct custom_char { + int value; + custom_char() = default; + + template <typename T> + constexpr custom_char(T val) : value(static_cast<int>(val)) {} + + operator int() const { return value; } +}; + +int to_ascii(custom_char c) { return c; } + +FMT_BEGIN_NAMESPACE +template <> struct is_char<custom_char> : std::true_type {}; +FMT_END_NAMESPACE + +TEST(xchar_test, format_custom_char) { + const custom_char format[] = {'{', '}', 0}; + auto result = fmt::format(format, custom_char('x')); + EXPECT_EQ(result.size(), 1); + EXPECT_EQ(result[0], custom_char('x')); +} +#endif + +// Convert a char8_t string to std::string. Otherwise GTest will insist on +// inserting `char8_t` NTBS into a `char` stream which is disabled by P1423. +template <typename S> std::string from_u8str(const S& str) { + return std::string(str.begin(), str.end()); +} + +TEST(xchar_test, format_utf8_precision) { + using str_type = std::basic_string<fmt::detail::char8_type>; + auto format = + str_type(reinterpret_cast<const fmt::detail::char8_type*>(u8"{:.4}")); + auto str = str_type(reinterpret_cast<const fmt::detail::char8_type*>( + u8"caf\u00e9s")); // cafés + auto result = fmt::format(format, str); + EXPECT_EQ(fmt::detail::compute_width(result), 4); + EXPECT_EQ(result.size(), 5); + EXPECT_EQ(from_u8str(result), from_u8str(str.substr(0, 5))); +} + +TEST(xchar_test, format_to) { + auto buf = std::vector<wchar_t>(); + fmt::format_to(std::back_inserter(buf), L"{}{}", 42, L'\0'); + EXPECT_STREQ(buf.data(), L"42"); +} + +TEST(xchar_test, vformat_to) { + using wcontext = fmt::wformat_context; + fmt::basic_format_arg<wcontext> warg = fmt::detail::make_arg<wcontext>(42); + auto wargs = fmt::basic_format_args<wcontext>(&warg, 1); + auto w = std::wstring(); + fmt::vformat_to(std::back_inserter(w), L"{}", wargs); + EXPECT_EQ(L"42", w); + w.clear(); + fmt::vformat_to(std::back_inserter(w), FMT_STRING(L"{}"), wargs); + EXPECT_EQ(L"42", w); +} + +TEST(format_test, wide_format_to_n) { + wchar_t buffer[4]; + buffer[3] = L'x'; + auto result = fmt::format_to_n(buffer, 3, L"{}", 12345); + EXPECT_EQ(5u, result.size); + EXPECT_EQ(buffer + 3, result.out); + EXPECT_EQ(L"123x", fmt::wstring_view(buffer, 4)); + buffer[0] = L'x'; + buffer[1] = L'x'; + buffer[2] = L'x'; + result = fmt::format_to_n(buffer, 3, L"{}", L'A'); + EXPECT_EQ(1u, result.size); + EXPECT_EQ(buffer + 1, result.out); + EXPECT_EQ(L"Axxx", fmt::wstring_view(buffer, 4)); + result = fmt::format_to_n(buffer, 3, L"{}{} ", L'B', L'C'); + EXPECT_EQ(3u, result.size); + EXPECT_EQ(buffer + 3, result.out); + EXPECT_EQ(L"BC x", fmt::wstring_view(buffer, 4)); +} + +#if FMT_USE_USER_DEFINED_LITERALS +TEST(xchar_test, named_arg_udl) { + using namespace fmt::literals; + auto udl_a = + fmt::format(L"{first}{second}{first}{third}", L"first"_a = L"abra", + L"second"_a = L"cad", L"third"_a = 99); + EXPECT_EQ( + fmt::format(L"{first}{second}{first}{third}", fmt::arg(L"first", L"abra"), + fmt::arg(L"second", L"cad"), fmt::arg(L"third", 99)), + udl_a); +} +#endif // FMT_USE_USER_DEFINED_LITERALS + +TEST(xchar_test, print) { + // Check that the wide print overload compiles. + if (fmt::detail::const_check(false)) fmt::print(L"test"); +} + +TEST(xchar_test, join) { + int v[3] = {1, 2, 3}; + EXPECT_EQ(fmt::format(L"({})", fmt::join(v, v + 3, L", ")), L"(1, 2, 3)"); + auto t = std::tuple<wchar_t, int, float>('a', 1, 2.0f); + EXPECT_EQ(fmt::format(L"({})", fmt::join(t, L", ")), L"(a, 1, 2)"); +} + +enum streamable_enum {}; + +std::wostream& operator<<(std::wostream& os, streamable_enum) { + return os << L"streamable_enum"; +} + +namespace fmt { +template <> +struct formatter<streamable_enum, wchar_t> : basic_ostream_formatter<wchar_t> { +}; +} // namespace fmt + +enum unstreamable_enum {}; +auto format_as(unstreamable_enum e) -> int { return e; } + +TEST(xchar_test, enum) { + EXPECT_EQ(L"streamable_enum", fmt::format(L"{}", streamable_enum())); + EXPECT_EQ(L"0", fmt::format(L"{}", unstreamable_enum())); +} + +struct streamable_and_unformattable {}; + +auto operator<<(std::wostream& os, streamable_and_unformattable) + -> std::wostream& { + return os << L"foo"; +} + +TEST(xchar_test, streamed) { + EXPECT_FALSE(fmt::is_formattable<streamable_and_unformattable>()); + EXPECT_EQ(fmt::format(L"{}", fmt::streamed(streamable_and_unformattable())), + L"foo"); +} + +TEST(xchar_test, sign_not_truncated) { + wchar_t format_str[] = { + L'{', L':', + '+' | static_cast<wchar_t>(1 << fmt::detail::num_bits<char>()), L'}', 0}; + EXPECT_THROW(fmt::format(fmt::runtime(format_str), 42), fmt::format_error); +} + +TEST(xchar_test, chrono) { + auto tm = std::tm(); + tm.tm_year = 116; + tm.tm_mon = 3; + tm.tm_mday = 25; + tm.tm_hour = 11; + tm.tm_min = 22; + tm.tm_sec = 33; + EXPECT_EQ(fmt::format("The date is {:%Y-%m-%d %H:%M:%S}.", tm), + "The date is 2016-04-25 11:22:33."); + EXPECT_EQ(L"42s", fmt::format(L"{}", std::chrono::seconds(42))); + EXPECT_EQ(fmt::format(L"{:%F}", tm), L"2016-04-25"); + EXPECT_EQ(fmt::format(L"{:%T}", tm), L"11:22:33"); +} + +std::wstring system_wcsftime(const std::wstring& format, const std::tm* timeptr, + std::locale* locptr = nullptr) { + auto loc = locptr ? *locptr : std::locale::classic(); + auto& facet = std::use_facet<std::time_put<wchar_t>>(loc); + std::wostringstream os; + os.imbue(loc); + facet.put(os, os, L' ', timeptr, format.c_str(), + format.c_str() + format.size()); +#ifdef _WIN32 + // Workaround a bug in older versions of Universal CRT. + auto str = os.str(); + if (str == L"-0000") str = L"+0000"; + return str; +#else + return os.str(); +#endif +} + +TEST(chrono_test_wchar, time_point) { + auto t1 = std::chrono::system_clock::now(); + + std::vector<std::wstring> spec_list = { + L"%%", L"%n", L"%t", L"%Y", L"%EY", L"%y", L"%Oy", L"%Ey", L"%C", + L"%EC", L"%G", L"%g", L"%b", L"%h", L"%B", L"%m", L"%Om", L"%U", + L"%OU", L"%W", L"%OW", L"%V", L"%OV", L"%j", L"%d", L"%Od", L"%e", + L"%Oe", L"%a", L"%A", L"%w", L"%Ow", L"%u", L"%Ou", L"%H", L"%OH", + L"%I", L"%OI", L"%M", L"%OM", L"%S", L"%OS", L"%x", L"%Ex", L"%X", + L"%EX", L"%D", L"%F", L"%R", L"%T", L"%p", L"%z", L"%Z"}; +#ifndef _WIN32 + // Disabled on Windows, because these formats is not consistent among + // platforms. + spec_list.insert(spec_list.end(), {L"%c", L"%Ec", L"%r"}); +#elif defined(__MINGW32__) && !defined(_UCRT) + // Only C89 conversion specifiers when using MSVCRT instead of UCRT + spec_list = {L"%%", L"%Y", L"%y", L"%b", L"%B", L"%m", L"%U", + L"%W", L"%j", L"%d", L"%a", L"%A", L"%w", L"%H", + L"%I", L"%M", L"%S", L"%x", L"%X", L"%p", L"%Z"}; +#endif + spec_list.push_back(L"%Y-%m-%d %H:%M:%S"); + + for (const auto& spec : spec_list) { + auto t = std::chrono::system_clock::to_time_t(t1); + auto tm = *std::localtime(&t); + + auto sys_output = system_wcsftime(spec, &tm); + + auto fmt_spec = fmt::format(L"{{:{}}}", spec); + EXPECT_EQ(sys_output, fmt::format(fmt::runtime(fmt_spec), t1)); + EXPECT_EQ(sys_output, fmt::format(fmt::runtime(fmt_spec), tm)); + } +} + +TEST(xchar_test, color) { + EXPECT_EQ(fmt::format(fg(fmt::rgb(255, 20, 30)), L"rgb(255,20,30) wide"), + L"\x1b[38;2;255;020;030mrgb(255,20,30) wide\x1b[0m"); +} + +TEST(xchar_test, ostream) { +#if !FMT_GCC_VERSION || FMT_GCC_VERSION >= 409 + std::wostringstream wos; + fmt::print(wos, L"Don't {}!", L"panic"); + EXPECT_EQ(wos.str(), L"Don't panic!"); +#endif +} + +TEST(xchar_test, format_map) { + auto m = std::map<std::wstring, int>{{L"one", 1}, {L"t\"wo", 2}}; + EXPECT_EQ(fmt::format(L"{}", m), L"{\"one\": 1, \"t\\\"wo\": 2}"); +} + +TEST(xchar_test, escape_string) { + using vec = std::vector<std::wstring>; + EXPECT_EQ(fmt::format(L"{}", vec{L"\n\r\t\"\\"}), L"[\"\\n\\r\\t\\\"\\\\\"]"); + EXPECT_EQ(fmt::format(L"{}", vec{L"понедельник"}), L"[\"понедельник\"]"); +} + +TEST(xchar_test, to_wstring) { EXPECT_EQ(L"42", fmt::to_wstring(42)); } + +#ifndef FMT_STATIC_THOUSANDS_SEPARATOR +template <typename Char> struct numpunct : std::numpunct<Char> { + protected: + Char do_decimal_point() const override { return '?'; } + std::string do_grouping() const override { return "\03"; } + Char do_thousands_sep() const override { return '~'; } +}; + +template <typename Char> struct no_grouping : std::numpunct<Char> { + protected: + Char do_decimal_point() const override { return '.'; } + std::string do_grouping() const override { return ""; } + Char do_thousands_sep() const override { return ','; } +}; + +template <typename Char> struct special_grouping : std::numpunct<Char> { + protected: + Char do_decimal_point() const override { return '.'; } + std::string do_grouping() const override { return "\03\02"; } + Char do_thousands_sep() const override { return ','; } +}; + +template <typename Char> struct small_grouping : std::numpunct<Char> { + protected: + Char do_decimal_point() const override { return '.'; } + std::string do_grouping() const override { return "\01"; } + Char do_thousands_sep() const override { return ','; } +}; + +TEST(locale_test, localized_double) { + auto loc = std::locale(std::locale(), new numpunct<char>()); + EXPECT_EQ(fmt::format(loc, "{:L}", 1.23), "1?23"); + EXPECT_EQ(fmt::format(loc, "{:Lf}", 1.23), "1?230000"); + EXPECT_EQ(fmt::format(loc, "{:L}", 1234.5), "1~234?5"); + EXPECT_EQ(fmt::format(loc, "{:L}", 12000.0), "12~000"); + EXPECT_EQ(fmt::format(loc, "{:8L}", 1230.0), " 1~230"); +} + +TEST(locale_test, format) { + auto loc = std::locale(std::locale(), new numpunct<char>()); + EXPECT_EQ("1234567", fmt::format(std::locale(), "{:L}", 1234567)); + EXPECT_EQ("1~234~567", fmt::format(loc, "{:L}", 1234567)); + EXPECT_EQ("-1~234~567", fmt::format(loc, "{:L}", -1234567)); + EXPECT_EQ("-256", fmt::format(loc, "{:L}", -256)); + fmt::format_arg_store<fmt::format_context, int> as{1234567}; + EXPECT_EQ("1~234~567", fmt::vformat(loc, "{:L}", fmt::format_args(as))); + auto s = std::string(); + fmt::format_to(std::back_inserter(s), loc, "{:L}", 1234567); + EXPECT_EQ("1~234~567", s); + + auto no_grouping_loc = std::locale(std::locale(), new no_grouping<char>()); + EXPECT_EQ("1234567", fmt::format(no_grouping_loc, "{:L}", 1234567)); + + auto special_grouping_loc = + std::locale(std::locale(), new special_grouping<char>()); + EXPECT_EQ("1,23,45,678", fmt::format(special_grouping_loc, "{:L}", 12345678)); + EXPECT_EQ("12,345", fmt::format(special_grouping_loc, "{:L}", 12345)); + + auto small_grouping_loc = + std::locale(std::locale(), new small_grouping<char>()); + EXPECT_EQ("4,2,9,4,9,6,7,2,9,5", + fmt::format(small_grouping_loc, "{:L}", max_value<uint32_t>())); +} + +TEST(locale_test, format_detault_align) { + auto loc = std::locale({}, new special_grouping<char>()); + EXPECT_EQ(" 12,345", fmt::format(loc, "{:8L}", 12345)); +} + +TEST(locale_test, format_plus) { + auto loc = std::locale({}, new special_grouping<char>()); + EXPECT_EQ("+100", fmt::format(loc, "{:+L}", 100)); +} + +TEST(locale_test, wformat) { + auto loc = std::locale(std::locale(), new numpunct<wchar_t>()); + EXPECT_EQ(L"1234567", fmt::format(std::locale(), L"{:L}", 1234567)); + EXPECT_EQ(L"1~234~567", fmt::format(loc, L"{:L}", 1234567)); + using wcontext = fmt::buffer_context<wchar_t>; + fmt::format_arg_store<wcontext, int> as{1234567}; + EXPECT_EQ(L"1~234~567", + fmt::vformat(loc, L"{:L}", fmt::basic_format_args<wcontext>(as))); + EXPECT_EQ(L"1234567", fmt::format(std::locale("C"), L"{:L}", 1234567)); + + auto no_grouping_loc = std::locale(std::locale(), new no_grouping<wchar_t>()); + EXPECT_EQ(L"1234567", fmt::format(no_grouping_loc, L"{:L}", 1234567)); + + auto special_grouping_loc = + std::locale(std::locale(), new special_grouping<wchar_t>()); + EXPECT_EQ(L"1,23,45,678", + fmt::format(special_grouping_loc, L"{:L}", 12345678)); + + auto small_grouping_loc = + std::locale(std::locale(), new small_grouping<wchar_t>()); + EXPECT_EQ(L"4,2,9,4,9,6,7,2,9,5", + fmt::format(small_grouping_loc, L"{:L}", max_value<uint32_t>())); +} + +TEST(locale_test, double_formatter) { + auto loc = std::locale(std::locale(), new special_grouping<char>()); + auto f = fmt::formatter<int>(); + auto parse_ctx = fmt::format_parse_context("L"); + f.parse(parse_ctx); + char buf[10] = {}; + fmt::basic_format_context<char*, char> format_ctx( + buf, {}, fmt::detail::locale_ref(loc)); + *f.format(12345, format_ctx) = 0; + EXPECT_STREQ("12,345", buf); +} + +FMT_BEGIN_NAMESPACE +template <class charT> struct formatter<std::complex<double>, charT> { + private: + detail::dynamic_format_specs<char> specs_; + + public: + FMT_CONSTEXPR typename basic_format_parse_context<charT>::iterator parse( + basic_format_parse_context<charT>& ctx) { + using handler_type = + detail::dynamic_specs_handler<basic_format_parse_context<charT>>; + detail::specs_checker<handler_type> handler(handler_type(specs_, ctx), + detail::type::string_type); + auto it = parse_format_specs(ctx.begin(), ctx.end(), handler); + detail::parse_float_type_spec(specs_, ctx.error_handler()); + return it; + } + + template <class FormatContext> + typename FormatContext::iterator format(const std::complex<double>& c, + FormatContext& ctx) { + detail::handle_dynamic_spec<detail::precision_checker>( + specs_.precision, specs_.precision_ref, ctx); + auto specs = std::string(); + if (specs_.precision > 0) specs = fmt::format(".{}", specs_.precision); + if (specs_.type == presentation_type::fixed_lower) specs += 'f'; + auto real = fmt::format(ctx.locale().template get<std::locale>(), + fmt::runtime("{:" + specs + "}"), c.real()); + auto imag = fmt::format(ctx.locale().template get<std::locale>(), + fmt::runtime("{:" + specs + "}"), c.imag()); + auto fill_align_width = std::string(); + if (specs_.width > 0) fill_align_width = fmt::format(">{}", specs_.width); + return format_to(ctx.out(), runtime("{:" + fill_align_width + "}"), + c.real() != 0 ? fmt::format("({}+{}i)", real, imag) + : fmt::format("{}i", imag)); + } +}; +FMT_END_NAMESPACE + +TEST(locale_test, complex) { + std::string s = fmt::format("{}", std::complex<double>(1, 2)); + EXPECT_EQ(s, "(1+2i)"); + EXPECT_EQ(fmt::format("{:.2f}", std::complex<double>(1, 2)), "(1.00+2.00i)"); + EXPECT_EQ(fmt::format("{:8}", std::complex<double>(1, 2)), " (1+2i)"); +} + +TEST(locale_test, chrono_weekday) { + auto loc = get_locale("ru_RU.UTF-8", "Russian_Russia.1251"); + auto loc_old = std::locale::global(loc); + auto mon = fmt::weekday(1); + EXPECT_EQ(fmt::format(L"{}", mon), L"Mon"); + if (loc != std::locale::classic()) { + // {L"\x43F\x43D", L"\x41F\x43D", L"\x43F\x43D\x434", L"\x41F\x43D\x434"} + // {L"пн", L"Пн", L"пнд", L"Пнд"} + EXPECT_THAT( + (std::vector<std::wstring>{L"\x43F\x43D", L"\x41F\x43D", + L"\x43F\x43D\x434", L"\x41F\x43D\x434"}), + Contains(fmt::format(loc, L"{:L}", mon))); + } + std::locale::global(loc_old); +} + +TEST(locale_test, sign) { + EXPECT_EQ(fmt::format(std::locale(), L"{:L}", -50), L"-50"); +} + +#endif // FMT_STATIC_THOUSANDS_SEPARATOR |