| // 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); |
| |
| EXPECT_PRINTF("0x1.p+4", "%#a", 16.0); |
| EXPECT_PRINTF("0X1.P+4", "%#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 format 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); } |
| |
| 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) { |
| int n = 42; |
| auto store = fmt::format_arg_store<fmt::printf_context, int>(n); |
| auto args = fmt::basic_format_args<fmt::printf_context>(store); |
| EXPECT_EQ(fmt::vsprintf(fmt::string_view("%d"), args), "42"); |
| EXPECT_WRITE(stdout, fmt::vfprintf(stdout, fmt::string_view("%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, make_printf_args) { |
| EXPECT_EQ("[42] something happened", |
| fmt::vsprintf(fmt::string_view("[%d] %s happened"), |
| {fmt::make_printf_args(42, "something")})); |
| EXPECT_EQ(L"[42] something happened", |
| fmt::vsprintf(fmt::basic_string_view<wchar_t>(L"[%d] %s happened"), |
| {fmt::make_wprintf_args(42, L"something")})); |
| } |