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243 lines
8.9 KiB
C++
243 lines
8.9 KiB
C++
// Formatting library for C++ - formatting library tests
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//
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// Copyright (c) 2012 - present, Victor Zverovich
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// All rights reserved.
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//
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// For the license information refer to format.h.
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#include "fmt/wchar.h"
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#include <complex>
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#include "gtest/gtest.h"
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using fmt::detail::max_value;
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// std::is_constructible is broken in MSVC until version 2015.
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#if !FMT_MSC_VER || FMT_MSC_VER >= 1900
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struct explicitly_convertible_to_wstring_view {
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explicit operator fmt::wstring_view() const { return L"foo"; }
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};
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TEST(wchar_test, format_explicitly_convertible_to_wstring_view) {
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EXPECT_EQ(L"foo",
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fmt::format(L"{}", explicitly_convertible_to_wstring_view()));
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}
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#endif
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TEST(wchar_test, vformat_to) {
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using wcontext = fmt::wformat_context;
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fmt::basic_format_arg<wcontext> warg = fmt::detail::make_arg<wcontext>(42);
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auto wargs = fmt::basic_format_args<wcontext>(&warg, 1);
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auto w = std::wstring();
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fmt::vformat_to(std::back_inserter(w), L"{}", wargs);
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EXPECT_EQ(L"42", w);
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w.clear();
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fmt::vformat_to(std::back_inserter(w), FMT_STRING(L"{}"), wargs);
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EXPECT_EQ(L"42", w);
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}
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TEST(format_test, wide_format_to_n) {
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wchar_t buffer[4];
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buffer[3] = L'x';
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auto result = fmt::format_to_n(buffer, 3, L"{}", 12345);
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EXPECT_EQ(5u, result.size);
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EXPECT_EQ(buffer + 3, result.out);
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EXPECT_EQ(L"123x", fmt::wstring_view(buffer, 4));
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buffer[0] = L'x';
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buffer[1] = L'x';
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buffer[2] = L'x';
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result = fmt::format_to_n(buffer, 3, L"{}", L'A');
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EXPECT_EQ(1u, result.size);
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EXPECT_EQ(buffer + 1, result.out);
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EXPECT_EQ(L"Axxx", fmt::wstring_view(buffer, 4));
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result = fmt::format_to_n(buffer, 3, L"{}{} ", L'B', L'C');
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EXPECT_EQ(3u, result.size);
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EXPECT_EQ(buffer + 3, result.out);
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EXPECT_EQ(L"BC x", fmt::wstring_view(buffer, 4));
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}
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#if FMT_USE_USER_DEFINED_LITERALS
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TEST(wchar_test, format_udl) {
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using namespace fmt::literals;
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EXPECT_EQ(L"{}c{}"_format(L"ab", 1), fmt::format(L"{}c{}", L"ab", 1));
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}
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TEST(wchar_test, named_arg_udl) {
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using namespace fmt::literals;
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auto udl_a =
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fmt::format(L"{first}{second}{first}{third}", L"first"_a = L"abra",
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L"second"_a = L"cad", L"third"_a = 99);
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EXPECT_EQ(
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fmt::format(L"{first}{second}{first}{third}", fmt::arg(L"first", L"abra"),
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fmt::arg(L"second", L"cad"), fmt::arg(L"third", 99)),
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udl_a);
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}
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#endif // FMT_USE_USER_DEFINED_LITERALS
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TEST(wchar_test, print) {
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// Check that the wide print overload compiles.
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if (fmt::detail::const_check(false)) fmt::print(L"test");
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}
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TEST(wchar_test, join) {
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int v[3] = {1, 2, 3};
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EXPECT_EQ(fmt::format(L"({})", fmt::join(v, v + 3, L", ")), L"(1, 2, 3)");
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}
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TEST(wchar_test, to_wstring) { EXPECT_EQ(L"42", fmt::to_wstring(42)); }
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#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
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template <typename Char> struct numpunct : std::numpunct<Char> {
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protected:
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Char do_decimal_point() const override { return '?'; }
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std::string do_grouping() const override { return "\03"; }
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Char do_thousands_sep() const override { return '~'; }
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};
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template <typename Char> struct no_grouping : std::numpunct<Char> {
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protected:
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Char do_decimal_point() const override { return '.'; }
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std::string do_grouping() const override { return ""; }
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Char do_thousands_sep() const override { return ','; }
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};
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template <typename Char> struct special_grouping : std::numpunct<Char> {
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protected:
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Char do_decimal_point() const override { return '.'; }
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std::string do_grouping() const override { return "\03\02"; }
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Char do_thousands_sep() const override { return ','; }
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};
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template <typename Char> struct small_grouping : std::numpunct<Char> {
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protected:
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Char do_decimal_point() const override { return '.'; }
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std::string do_grouping() const override { return "\01"; }
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Char do_thousands_sep() const override { return ','; }
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};
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TEST(locale_test, double_decimal_point) {
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auto loc = std::locale(std::locale(), new numpunct<char>());
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EXPECT_EQ("1?23", fmt::format(loc, "{:L}", 1.23));
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EXPECT_EQ("1?230000", fmt::format(loc, "{:Lf}", 1.23));
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}
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TEST(locale_test, format) {
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auto loc = std::locale(std::locale(), new numpunct<char>());
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EXPECT_EQ("1234567", fmt::format(std::locale(), "{:L}", 1234567));
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EXPECT_EQ("1~234~567", fmt::format(loc, "{:L}", 1234567));
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EXPECT_EQ("-1~234~567", fmt::format(loc, "{:L}", -1234567));
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EXPECT_EQ("-256", fmt::format(loc, "{:L}", -256));
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fmt::format_arg_store<fmt::format_context, int> as{1234567};
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EXPECT_EQ("1~234~567", fmt::vformat(loc, "{:L}", fmt::format_args(as)));
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auto s = std::string();
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fmt::format_to(std::back_inserter(s), loc, "{:L}", 1234567);
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EXPECT_EQ("1~234~567", s);
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auto no_grouping_loc = std::locale(std::locale(), new no_grouping<char>());
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EXPECT_EQ("1234567", fmt::format(no_grouping_loc, "{:L}", 1234567));
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auto special_grouping_loc =
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std::locale(std::locale(), new special_grouping<char>());
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EXPECT_EQ("1,23,45,678", fmt::format(special_grouping_loc, "{:L}", 12345678));
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EXPECT_EQ("12,345", fmt::format(special_grouping_loc, "{:L}", 12345));
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auto small_grouping_loc =
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std::locale(std::locale(), new small_grouping<char>());
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EXPECT_EQ("4,2,9,4,9,6,7,2,9,5",
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fmt::format(small_grouping_loc, "{:L}", max_value<uint32_t>()));
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}
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TEST(locale_test, format_detault_align) {
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auto loc = std::locale({}, new special_grouping<char>());
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EXPECT_EQ(" 12,345", fmt::format(loc, "{:8L}", 12345));
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}
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TEST(locale_test, format_plus) {
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auto loc = std::locale({}, new special_grouping<char>());
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EXPECT_EQ("+100", fmt::format(loc, "{:+L}", 100));
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}
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TEST(locale_test, wformat) {
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auto loc = std::locale(std::locale(), new numpunct<wchar_t>());
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EXPECT_EQ(L"1234567", fmt::format(std::locale(), L"{:L}", 1234567));
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EXPECT_EQ(L"1~234~567", fmt::format(loc, L"{:L}", 1234567));
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using wcontext = fmt::buffer_context<wchar_t>;
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fmt::format_arg_store<wcontext, int> as{1234567};
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EXPECT_EQ(L"1~234~567",
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fmt::vformat(loc, L"{:L}", fmt::basic_format_args<wcontext>(as)));
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EXPECT_EQ(L"1234567", fmt::format(std::locale("C"), L"{:L}", 1234567));
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auto no_grouping_loc = std::locale(std::locale(), new no_grouping<wchar_t>());
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EXPECT_EQ(L"1234567", fmt::format(no_grouping_loc, L"{:L}", 1234567));
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auto special_grouping_loc =
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std::locale(std::locale(), new special_grouping<wchar_t>());
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EXPECT_EQ(L"1,23,45,678",
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fmt::format(special_grouping_loc, L"{:L}", 12345678));
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auto small_grouping_loc =
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std::locale(std::locale(), new small_grouping<wchar_t>());
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EXPECT_EQ(L"4,2,9,4,9,6,7,2,9,5",
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fmt::format(small_grouping_loc, L"{:L}", max_value<uint32_t>()));
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}
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TEST(locale_test, double_formatter) {
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auto loc = std::locale(std::locale(), new special_grouping<char>());
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auto f = fmt::formatter<int>();
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auto parse_ctx = fmt::format_parse_context("L");
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f.parse(parse_ctx);
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char buf[10] = {};
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fmt::basic_format_context<char*, char> format_ctx(
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buf, {}, fmt::detail::locale_ref(loc));
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*f.format(12345, format_ctx) = 0;
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EXPECT_STREQ("12,345", buf);
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}
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FMT_BEGIN_NAMESPACE
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template <class charT> struct formatter<std::complex<double>, charT> {
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private:
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detail::dynamic_format_specs<char> specs_;
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public:
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FMT_CONSTEXPR typename basic_format_parse_context<charT>::iterator parse(
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basic_format_parse_context<charT>& ctx) {
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using handler_type =
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detail::dynamic_specs_handler<basic_format_parse_context<charT>>;
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detail::specs_checker<handler_type> handler(handler_type(specs_, ctx),
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detail::type::string_type);
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auto it = parse_format_specs(ctx.begin(), ctx.end(), handler);
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detail::parse_float_type_spec(specs_, ctx.error_handler());
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return it;
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}
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template <class FormatContext>
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typename FormatContext::iterator format(const std::complex<double>& c,
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FormatContext& ctx) {
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detail::handle_dynamic_spec<detail::precision_checker>(
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specs_.precision, specs_.precision_ref, ctx);
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auto specs = std::string();
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if (specs_.precision > 0) specs = fmt::format(".{}", specs_.precision);
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if (specs_.type) specs += specs_.type;
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auto real = fmt::format(ctx.locale().template get<std::locale>(),
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fmt::runtime("{:" + specs + "}"), c.real());
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auto imag = fmt::format(ctx.locale().template get<std::locale>(),
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fmt::runtime("{:" + specs + "}"), c.imag());
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auto fill_align_width = std::string();
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if (specs_.width > 0) fill_align_width = fmt::format(">{}", specs_.width);
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return format_to(ctx.out(), runtime("{:" + fill_align_width + "}"),
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c.real() != 0 ? fmt::format("({}+{}i)", real, imag)
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: fmt::format("{}i", imag));
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}
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};
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FMT_END_NAMESPACE
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TEST(locale_test, complex) {
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std::string s = fmt::format("{}", std::complex<double>(1, 2));
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EXPECT_EQ(s, "(1+2i)");
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EXPECT_EQ(fmt::format("{:.2f}", std::complex<double>(1, 2)), "(1.00+2.00i)");
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EXPECT_EQ(fmt::format("{:8}", std::complex<double>(1, 2)), " (1+2i)");
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}
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#endif // FMT_STATIC_THOUSANDS_SEPARATOR
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