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Diffstat (limited to 'src/fmt/test/printf-test.cc')
| -rw-r--r-- | src/fmt/test/printf-test.cc | 584 |
1 files changed, 584 insertions, 0 deletions
diff --git a/src/fmt/test/printf-test.cc b/src/fmt/test/printf-test.cc new file mode 100644 index 000000000..383ffb83b --- /dev/null +++ b/src/fmt/test/printf-test.cc @@ -0,0 +1,584 @@ +// Formatting library for C++ - printf tests +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#include "fmt/printf.h" + +#include <cctype> +#include <climits> +#include <cstring> + +#include "fmt/xchar.h" +#include "gtest-extra.h" +#include "util.h" + +using fmt::format; +using fmt::format_error; +using fmt::detail::max_value; + +const unsigned big_num = INT_MAX + 1u; + +// Makes format string argument positional. +static std::string make_positional(fmt::string_view format) { + std::string s(format.data(), format.size()); + s.replace(s.find('%'), 1, "%1$"); + return s; +} + +static std::wstring make_positional(fmt::basic_string_view<wchar_t> format) { + std::wstring s(format.data(), format.size()); + s.replace(s.find(L'%'), 1, L"%1$"); + return s; +} + +// A wrapper around fmt::sprintf to workaround bogus warnings about invalid +// format strings in MSVC. +template <typename... Args> +std::string test_sprintf(fmt::string_view format, const Args&... args) { + return fmt::sprintf(format, args...); +} +template <typename... Args> +std::wstring test_sprintf(fmt::basic_string_view<wchar_t> format, + const Args&... args) { + return fmt::sprintf(format, args...); +} + +#define EXPECT_PRINTF(expected_output, format, arg) \ + EXPECT_EQ(expected_output, test_sprintf(format, arg)) \ + << "format: " << format; \ + EXPECT_EQ(expected_output, fmt::sprintf(make_positional(format), arg)) + +TEST(printf_test, no_args) { + EXPECT_EQ("test", test_sprintf("test")); + EXPECT_EQ(L"test", fmt::sprintf(L"test")); +} + +TEST(printf_test, escape) { + EXPECT_EQ("%", test_sprintf("%%")); + EXPECT_EQ("before %", test_sprintf("before %%")); + EXPECT_EQ("% after", test_sprintf("%% after")); + EXPECT_EQ("before % after", test_sprintf("before %% after")); + EXPECT_EQ("%s", test_sprintf("%%s")); + EXPECT_EQ(L"%", fmt::sprintf(L"%%")); + EXPECT_EQ(L"before %", fmt::sprintf(L"before %%")); + EXPECT_EQ(L"% after", fmt::sprintf(L"%% after")); + EXPECT_EQ(L"before % after", fmt::sprintf(L"before %% after")); + EXPECT_EQ(L"%s", fmt::sprintf(L"%%s")); +} + +TEST(printf_test, positional_args) { + EXPECT_EQ("42", test_sprintf("%1$d", 42)); + EXPECT_EQ("before 42", test_sprintf("before %1$d", 42)); + EXPECT_EQ("42 after", test_sprintf("%1$d after", 42)); + EXPECT_EQ("before 42 after", test_sprintf("before %1$d after", 42)); + EXPECT_EQ("answer = 42", test_sprintf("%1$s = %2$d", "answer", 42)); + EXPECT_EQ("42 is the answer", test_sprintf("%2$d is the %1$s", "answer", 42)); + EXPECT_EQ("abracadabra", test_sprintf("%1$s%2$s%1$s", "abra", "cad")); +} + +TEST(printf_test, automatic_arg_indexing) { + EXPECT_EQ("abc", test_sprintf("%c%c%c", 'a', 'b', 'c')); +} + +TEST(printf_test, number_is_too_big_in_arg_index) { + EXPECT_THROW_MSG(test_sprintf(format("%{}$", big_num)), format_error, + "argument not found"); + EXPECT_THROW_MSG(test_sprintf(format("%{}$d", big_num)), format_error, + "argument not found"); +} + +TEST(printf_test, switch_arg_indexing) { + EXPECT_THROW_MSG(test_sprintf("%1$d%", 1, 2), format_error, + "cannot switch from manual to automatic argument indexing"); + EXPECT_THROW_MSG(test_sprintf(format("%1$d%{}d", big_num), 1, 2), + format_error, "number is too big"); + EXPECT_THROW_MSG(test_sprintf("%1$d%d", 1, 2), format_error, + "cannot switch from manual to automatic argument indexing"); + + EXPECT_THROW_MSG(test_sprintf("%d%1$", 1, 2), format_error, + "cannot switch from automatic to manual argument indexing"); + EXPECT_THROW_MSG(test_sprintf(format("%d%{}$d", big_num), 1, 2), format_error, + "cannot switch from automatic to manual argument indexing"); + EXPECT_THROW_MSG(test_sprintf("%d%1$d", 1, 2), format_error, + "cannot switch from automatic to manual argument indexing"); + + // Indexing errors override width errors. + EXPECT_THROW_MSG(test_sprintf(format("%d%1${}d", big_num), 1, 2), + format_error, "number is too big"); + EXPECT_THROW_MSG(test_sprintf(format("%1$d%{}d", big_num), 1, 2), + format_error, "number is too big"); +} + +TEST(printf_test, invalid_arg_index) { + EXPECT_THROW_MSG(test_sprintf("%0$d", 42), format_error, + "argument not found"); + EXPECT_THROW_MSG(test_sprintf("%2$d", 42), format_error, + "argument not found"); + EXPECT_THROW_MSG(test_sprintf(format("%{}$d", INT_MAX), 42), format_error, + "argument not found"); + + EXPECT_THROW_MSG(test_sprintf("%2$", 42), format_error, "argument not found"); + EXPECT_THROW_MSG(test_sprintf(format("%{}$d", big_num), 42), format_error, + "argument not found"); +} + +TEST(printf_test, default_align_right) { + EXPECT_PRINTF(" 42", "%5d", 42); + EXPECT_PRINTF(" abc", "%5s", "abc"); +} + +TEST(printf_test, zero_flag) { + EXPECT_PRINTF("00042", "%05d", 42); + EXPECT_PRINTF("-0042", "%05d", -42); + + EXPECT_PRINTF("00042", "%05d", 42); + EXPECT_PRINTF("-0042", "%05d", -42); + EXPECT_PRINTF("-004.2", "%06g", -4.2); + + EXPECT_PRINTF("+00042", "%00+6d", 42); + + EXPECT_PRINTF(" 42", "%05.d", 42); + EXPECT_PRINTF(" 0042", "%05.4d", 42); + + // '0' flag is ignored for non-numeric types. + EXPECT_PRINTF(" x", "%05c", 'x'); +} + +TEST(printf_test, plus_flag) { + EXPECT_PRINTF("+42", "%+d", 42); + EXPECT_PRINTF("-42", "%+d", -42); + EXPECT_PRINTF("+0042", "%+05d", 42); + EXPECT_PRINTF("+0042", "%0++5d", 42); + + // '+' flag is ignored for non-numeric types. + EXPECT_PRINTF("x", "%+c", 'x'); + + // '+' flag wins over space flag + EXPECT_PRINTF("+42", "%+ d", 42); + EXPECT_PRINTF("-42", "%+ d", -42); + EXPECT_PRINTF("+42", "% +d", 42); + EXPECT_PRINTF("-42", "% +d", -42); + EXPECT_PRINTF("+0042", "% +05d", 42); + EXPECT_PRINTF("+0042", "%0+ 5d", 42); + + // '+' flag and space flag are both ignored for non-numeric types. + EXPECT_PRINTF("x", "%+ c", 'x'); + EXPECT_PRINTF("x", "% +c", 'x'); +} + +TEST(printf_test, minus_flag) { + EXPECT_PRINTF("abc ", "%-5s", "abc"); + EXPECT_PRINTF("abc ", "%0--5s", "abc"); + + EXPECT_PRINTF("7 ", "%-5d", 7); + EXPECT_PRINTF("97 ", "%-5hhi", 'a'); + EXPECT_PRINTF("a ", "%-5c", 'a'); + + // '0' flag is ignored if '-' flag is given + EXPECT_PRINTF("7 ", "%-05d", 7); + EXPECT_PRINTF("7 ", "%0-5d", 7); + EXPECT_PRINTF("a ", "%-05c", 'a'); + EXPECT_PRINTF("a ", "%0-5c", 'a'); + EXPECT_PRINTF("97 ", "%-05hhi", 'a'); + EXPECT_PRINTF("97 ", "%0-5hhi", 'a'); + + // '-' and space flag don't interfere + EXPECT_PRINTF(" 42", "%- d", 42); +} + +TEST(printf_test, space_flag) { + EXPECT_PRINTF(" 42", "% d", 42); + EXPECT_PRINTF("-42", "% d", -42); + EXPECT_PRINTF(" 0042", "% 05d", 42); + EXPECT_PRINTF(" 0042", "%0 5d", 42); + + // ' ' flag is ignored for non-numeric types. + EXPECT_PRINTF("x", "% c", 'x'); +} + +TEST(printf_test, hash_flag) { + EXPECT_PRINTF("042", "%#o", 042); + EXPECT_PRINTF(fmt::format("0{:o}", static_cast<unsigned>(-042)), "%#o", -042); + EXPECT_PRINTF("0", "%#o", 0); + + EXPECT_PRINTF("0x42", "%#x", 0x42); + EXPECT_PRINTF("0X42", "%#X", 0x42); + EXPECT_PRINTF(fmt::format("0x{:x}", static_cast<unsigned>(-0x42)), "%#x", + -0x42); + EXPECT_PRINTF("0", "%#x", 0); + + EXPECT_PRINTF("0x0042", "%#06x", 0x42); + EXPECT_PRINTF("0x0042", "%0##6x", 0x42); + + EXPECT_PRINTF("-42.000000", "%#f", -42.0); + EXPECT_PRINTF("-42.000000", "%#F", -42.0); + + char buffer[256]; + safe_sprintf(buffer, "%#e", -42.0); + EXPECT_PRINTF(buffer, "%#e", -42.0); + safe_sprintf(buffer, "%#E", -42.0); + EXPECT_PRINTF(buffer, "%#E", -42.0); + + EXPECT_PRINTF("-42.0000", "%#g", -42.0); + EXPECT_PRINTF("-42.0000", "%#G", -42.0); + + safe_sprintf(buffer, "%#a", 16.0); + EXPECT_PRINTF(buffer, "%#a", 16.0); + safe_sprintf(buffer, "%#A", 16.0); + EXPECT_PRINTF(buffer, "%#A", 16.0); + + // '#' flag is ignored for non-numeric types. + EXPECT_PRINTF("x", "%#c", 'x'); +} + +TEST(printf_test, width) { + EXPECT_PRINTF(" abc", "%5s", "abc"); + + // Width cannot be specified twice. + EXPECT_THROW_MSG(test_sprintf("%5-5d", 42), format_error, + "invalid type specifier"); + + EXPECT_THROW_MSG(test_sprintf(format("%{}d", big_num), 42), format_error, + "number is too big"); + EXPECT_THROW_MSG(test_sprintf(format("%1${}d", big_num), 42), format_error, + "number is too big"); +} + +TEST(printf_test, dynamic_width) { + EXPECT_EQ(" 42", test_sprintf("%*d", 5, 42)); + EXPECT_EQ("42 ", test_sprintf("%*d", -5, 42)); + EXPECT_THROW_MSG(test_sprintf("%*d", 5.0, 42), format_error, + "width is not integer"); + EXPECT_THROW_MSG(test_sprintf("%*d"), format_error, "argument not found"); + EXPECT_THROW_MSG(test_sprintf("%*d", big_num, 42), format_error, + "number is too big"); +} + +TEST(printf_test, int_precision) { + EXPECT_PRINTF("00042", "%.5d", 42); + EXPECT_PRINTF("-00042", "%.5d", -42); + EXPECT_PRINTF("00042", "%.5x", 0x42); + EXPECT_PRINTF("0x00042", "%#.5x", 0x42); + EXPECT_PRINTF("00042", "%.5o", 042); + EXPECT_PRINTF("00042", "%#.5o", 042); + + EXPECT_PRINTF(" 00042", "%7.5d", 42); + EXPECT_PRINTF(" 00042", "%7.5x", 0x42); + EXPECT_PRINTF(" 0x00042", "%#10.5x", 0x42); + EXPECT_PRINTF(" 00042", "%7.5o", 042); + EXPECT_PRINTF(" 00042", "%#10.5o", 042); + + EXPECT_PRINTF("00042 ", "%-7.5d", 42); + EXPECT_PRINTF("00042 ", "%-7.5x", 0x42); + EXPECT_PRINTF("0x00042 ", "%-#10.5x", 0x42); + EXPECT_PRINTF("00042 ", "%-7.5o", 042); + EXPECT_PRINTF("00042 ", "%-#10.5o", 042); +} + +TEST(printf_test, float_precision) { + char buffer[256]; + safe_sprintf(buffer, "%.3e", 1234.5678); + EXPECT_PRINTF(buffer, "%.3e", 1234.5678); + EXPECT_PRINTF("1234.568", "%.3f", 1234.5678); + EXPECT_PRINTF("1.23e+03", "%.3g", 1234.5678); + safe_sprintf(buffer, "%.3a", 1234.5678); + EXPECT_PRINTF(buffer, "%.3a", 1234.5678); +} + +TEST(printf_test, string_precision) { + char test[] = {'H', 'e', 'l', 'l', 'o'}; + EXPECT_EQ(fmt::sprintf("%.4s", test), "Hell"); +} + +TEST(printf_test, ignore_precision_for_non_numeric_arg) { + EXPECT_PRINTF("abc", "%.5s", "abc"); +} + +TEST(printf_test, dynamic_precision) { + EXPECT_EQ("00042", test_sprintf("%.*d", 5, 42)); + EXPECT_EQ("42", test_sprintf("%.*d", -5, 42)); + EXPECT_THROW_MSG(test_sprintf("%.*d", 5.0, 42), format_error, + "precision is not integer"); + EXPECT_THROW_MSG(test_sprintf("%.*d"), format_error, "argument not found"); + EXPECT_THROW_MSG(test_sprintf("%.*d", big_num, 42), format_error, + "number is too big"); + if (sizeof(long long) != sizeof(int)) { + long long prec = static_cast<long long>(INT_MIN) - 1; + EXPECT_THROW_MSG(test_sprintf("%.*d", prec, 42), format_error, + "number is too big"); + } +} + +template <typename T> struct make_signed { typedef T type; }; + +#define SPECIALIZE_MAKE_SIGNED(T, S) \ + template <> struct make_signed<T> { typedef S type; } + +SPECIALIZE_MAKE_SIGNED(char, signed char); +SPECIALIZE_MAKE_SIGNED(unsigned char, signed char); +SPECIALIZE_MAKE_SIGNED(unsigned short, short); +SPECIALIZE_MAKE_SIGNED(unsigned, int); +SPECIALIZE_MAKE_SIGNED(unsigned long, long); +SPECIALIZE_MAKE_SIGNED(unsigned long long, long long); + +// Test length format specifier ``length_spec``. +template <typename T, typename U> +void test_length(const char* length_spec, U value) { + long long signed_value = 0; + unsigned long long unsigned_value = 0; + // Apply integer promotion to the argument. + unsigned long long max = max_value<U>(); + using fmt::detail::const_check; + if (const_check(max <= static_cast<unsigned>(max_value<int>()))) { + signed_value = static_cast<int>(value); + unsigned_value = static_cast<unsigned long long>(value); + } else if (const_check(max <= max_value<unsigned>())) { + signed_value = static_cast<unsigned>(value); + unsigned_value = static_cast<unsigned long long>(value); + } + if (sizeof(U) <= sizeof(int) && sizeof(int) < sizeof(T)) { + signed_value = static_cast<long long>(value); + unsigned_value = static_cast<unsigned long long>( + static_cast<typename std::make_unsigned<unsigned>::type>(value)); + } else { + signed_value = static_cast<typename make_signed<T>::type>(value); + unsigned_value = static_cast<typename std::make_unsigned<T>::type>(value); + } + std::ostringstream os; + os << signed_value; + EXPECT_PRINTF(os.str(), fmt::format("%{}d", length_spec), value); + EXPECT_PRINTF(os.str(), fmt::format("%{}i", length_spec), value); + os.str(""); + os << unsigned_value; + EXPECT_PRINTF(os.str(), fmt::format("%{}u", length_spec), value); + os.str(""); + os << std::oct << unsigned_value; + EXPECT_PRINTF(os.str(), fmt::format("%{}o", length_spec), value); + os.str(""); + os << std::hex << unsigned_value; + EXPECT_PRINTF(os.str(), fmt::format("%{}x", length_spec), value); + os.str(""); + os << std::hex << std::uppercase << unsigned_value; + EXPECT_PRINTF(os.str(), fmt::format("%{}X", length_spec), value); +} + +template <typename T> void test_length(const char* length_spec) { + T min = std::numeric_limits<T>::min(), max = max_value<T>(); + test_length<T>(length_spec, 42); + test_length<T>(length_spec, -42); + test_length<T>(length_spec, min); + test_length<T>(length_spec, max); + long long long_long_min = std::numeric_limits<long long>::min(); + if (static_cast<long long>(min) > long_long_min) + test_length<T>(length_spec, static_cast<long long>(min) - 1); + unsigned long long long_long_max = max_value<long long>(); + if (static_cast<unsigned long long>(max) < long_long_max) + test_length<T>(length_spec, static_cast<long long>(max) + 1); + test_length<T>(length_spec, std::numeric_limits<short>::min()); + test_length<T>(length_spec, max_value<unsigned short>()); + test_length<T>(length_spec, std::numeric_limits<int>::min()); + test_length<T>(length_spec, max_value<int>()); + test_length<T>(length_spec, std::numeric_limits<unsigned>::min()); + test_length<T>(length_spec, max_value<unsigned>()); + test_length<T>(length_spec, std::numeric_limits<long long>::min()); + test_length<T>(length_spec, max_value<long long>()); + test_length<T>(length_spec, std::numeric_limits<unsigned long long>::min()); + test_length<T>(length_spec, max_value<unsigned long long>()); +} + +TEST(printf_test, length) { + test_length<char>("hh"); + test_length<signed char>("hh"); + test_length<unsigned char>("hh"); + test_length<short>("h"); + test_length<unsigned short>("h"); + test_length<long>("l"); + test_length<unsigned long>("l"); + test_length<long long>("ll"); + test_length<unsigned long long>("ll"); + test_length<intmax_t>("j"); + test_length<size_t>("z"); + test_length<std::ptrdiff_t>("t"); + long double max = max_value<long double>(); + EXPECT_PRINTF(fmt::format("{:.6}", max), "%g", max); + EXPECT_PRINTF(fmt::format("{:.6}", max), "%Lg", max); +} + +TEST(printf_test, bool) { + EXPECT_PRINTF("1", "%d", true); + EXPECT_PRINTF("true", "%s", true); +} + +TEST(printf_test, int) { + EXPECT_PRINTF("-42", "%d", -42); + EXPECT_PRINTF("-42", "%i", -42); + unsigned u = 0 - 42u; + EXPECT_PRINTF(fmt::format("{}", u), "%u", -42); + EXPECT_PRINTF(fmt::format("{:o}", u), "%o", -42); + EXPECT_PRINTF(fmt::format("{:x}", u), "%x", -42); + EXPECT_PRINTF(fmt::format("{:X}", u), "%X", -42); +} + +TEST(printf_test, long_long) { + // fmt::printf allows passing long long arguments to %d without length + // specifiers. + long long max = max_value<long long>(); + EXPECT_PRINTF(fmt::format("{}", max), "%d", max); +} + +TEST(printf_test, float) { + EXPECT_PRINTF("392.650000", "%f", 392.65); + EXPECT_PRINTF("392.65", "%.2f", 392.65); + EXPECT_PRINTF("392.6", "%.1f", 392.65); + EXPECT_PRINTF("393", "%.f", 392.65); + EXPECT_PRINTF("392.650000", "%F", 392.65); + char buffer[256]; + safe_sprintf(buffer, "%e", 392.65); + EXPECT_PRINTF(buffer, "%e", 392.65); + safe_sprintf(buffer, "%E", 392.65); + EXPECT_PRINTF(buffer, "%E", 392.65); + EXPECT_PRINTF("392.65", "%g", 392.65); + EXPECT_PRINTF("392.65", "%G", 392.65); + EXPECT_PRINTF("392", "%g", 392.0); + EXPECT_PRINTF("392", "%G", 392.0); + EXPECT_PRINTF("4.56e-07", "%g", 0.000000456); + safe_sprintf(buffer, "%a", -392.65); + EXPECT_EQ(buffer, format("{:a}", -392.65)); + safe_sprintf(buffer, "%A", -392.65); + EXPECT_EQ(buffer, format("{:A}", -392.65)); +} + +TEST(printf_test, inf) { + double inf = std::numeric_limits<double>::infinity(); + for (const char* type = "fega"; *type; ++type) { + EXPECT_PRINTF("inf", fmt::format("%{}", *type), inf); + char upper = static_cast<char>(std::toupper(*type)); + EXPECT_PRINTF("INF", fmt::format("%{}", upper), inf); + } +} + +TEST(printf_test, char) { + EXPECT_PRINTF("x", "%c", 'x'); + int max = max_value<int>(); + EXPECT_PRINTF(fmt::format("{}", static_cast<char>(max)), "%c", max); + // EXPECT_PRINTF("x", "%lc", L'x'); + EXPECT_PRINTF(L"x", L"%c", L'x'); + EXPECT_PRINTF(fmt::format(L"{}", static_cast<wchar_t>(max)), L"%c", max); +} + +TEST(printf_test, string) { + EXPECT_PRINTF("abc", "%s", "abc"); + const char* null_str = nullptr; + EXPECT_PRINTF("(null)", "%s", null_str); + EXPECT_PRINTF(" (null)", "%10s", null_str); + EXPECT_PRINTF(L"abc", L"%s", L"abc"); + const wchar_t* null_wstr = nullptr; + EXPECT_PRINTF(L"(null)", L"%s", null_wstr); + EXPECT_PRINTF(L" (null)", L"%10s", null_wstr); +} + +TEST(printf_test, pointer) { + int n; + void* p = &n; + EXPECT_PRINTF(fmt::format("{}", p), "%p", p); + p = nullptr; + EXPECT_PRINTF("(nil)", "%p", p); + EXPECT_PRINTF(" (nil)", "%10p", p); + const char* s = "test"; + EXPECT_PRINTF(fmt::format("{:p}", s), "%p", s); + const char* null_str = nullptr; + EXPECT_PRINTF("(nil)", "%p", null_str); + + p = &n; + EXPECT_PRINTF(fmt::format(L"{}", p), L"%p", p); + p = nullptr; + EXPECT_PRINTF(L"(nil)", L"%p", p); + EXPECT_PRINTF(L" (nil)", L"%10p", p); + const wchar_t* w = L"test"; + EXPECT_PRINTF(fmt::format(L"{:p}", w), L"%p", w); + const wchar_t* null_wstr = nullptr; + EXPECT_PRINTF(L"(nil)", L"%p", null_wstr); +} + +enum test_enum { answer = 42 }; +auto format_as(test_enum e) -> int { return e; } + +TEST(printf_test, enum) { + EXPECT_PRINTF("42", "%d", answer); + volatile test_enum volatile_enum = answer; + EXPECT_PRINTF("42", "%d", volatile_enum); +} + +#if FMT_USE_FCNTL +TEST(printf_test, examples) { + const char* weekday = "Thursday"; + const char* month = "August"; + int day = 21; + EXPECT_WRITE(stdout, fmt::printf("%1$s, %3$d %2$s", weekday, month, day), + "Thursday, 21 August"); +} + +TEST(printf_test, printf_error) { + fmt::file read_end, write_end; + fmt::file::pipe(read_end, write_end); + int result = fmt::fprintf(read_end.fdopen("r").get(), "test"); + EXPECT_LT(result, 0); +} +#endif + +TEST(printf_test, wide_string) { + EXPECT_EQ(L"abc", fmt::sprintf(L"%s", L"abc")); +} + +TEST(printf_test, vprintf) { + fmt::format_arg_store<fmt::printf_context, int> as{42}; + fmt::basic_format_args<fmt::printf_context> args(as); + EXPECT_EQ(fmt::vsprintf("%d", args), "42"); + EXPECT_WRITE(stdout, fmt::vprintf("%d", args), "42"); + EXPECT_WRITE(stdout, fmt::vfprintf(stdout, "%d", args), "42"); +} + +template <typename... Args> +void check_format_string_regression(fmt::string_view s, const Args&... args) { + fmt::sprintf(s, args...); +} + +TEST(printf_test, check_format_string_regression) { + check_format_string_regression("%c%s", 'x', ""); +} + +TEST(printf_test, fixed_large_exponent) { + EXPECT_EQ("1000000000000000000000", fmt::sprintf("%.*f", -13, 1e21)); +} + +TEST(printf_test, vsprintf_make_args_example) { + fmt::format_arg_store<fmt::printf_context, int, const char*> as{42, + "something"}; + fmt::basic_format_args<fmt::printf_context> args(as); + EXPECT_EQ("[42] something happened", fmt::vsprintf("[%d] %s happened", args)); + auto as2 = fmt::make_printf_args(42, "something"); + fmt::basic_format_args<fmt::printf_context> args2(as2); + EXPECT_EQ("[42] something happened", + fmt::vsprintf("[%d] %s happened", args2)); + EXPECT_EQ("[42] something happened", + fmt::vsprintf("[%d] %s happened", + {fmt::make_printf_args(42, "something")})); +} + +TEST(printf_test, vsprintf_make_wargs_example) { + fmt::format_arg_store<fmt::wprintf_context, int, const wchar_t*> as{ + 42, L"something"}; + fmt::basic_format_args<fmt::wprintf_context> args(as); + EXPECT_EQ(L"[42] something happened", + fmt::vsprintf(L"[%d] %s happened", args)); + auto as2 = fmt::make_wprintf_args(42, L"something"); + fmt::basic_format_args<fmt::wprintf_context> args2(as2); + EXPECT_EQ(L"[42] something happened", + fmt::vsprintf(L"[%d] %s happened", args2)); + EXPECT_EQ(L"[42] something happened", + fmt::vsprintf(L"[%d] %s happened", + {fmt::make_wprintf_args(42, L"something")})); +} |