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Diffstat (limited to 'thirdparty/fmt/test/format-test.cc')
| -rw-r--r-- | thirdparty/fmt/test/format-test.cc | 2679 |
1 files changed, 0 insertions, 2679 deletions
diff --git a/thirdparty/fmt/test/format-test.cc b/thirdparty/fmt/test/format-test.cc deleted file mode 100644 index 71bfe61d4..000000000 --- a/thirdparty/fmt/test/format-test.cc +++ /dev/null @@ -1,2679 +0,0 @@ -// Formatting library for C++ - formatting library tests -// -// Copyright (c) 2012 - present, Victor Zverovich -// All rights reserved. -// -// For the license information refer to format.h. - -// Check if fmt/format.h compiles with windows.h included before it. -#ifdef _WIN32 -# include <windows.h> -#endif -// clang-format off -#include "fmt/format.h" -// clang-format on - -#include <stdint.h> // uint32_t - -#include <cfenv> // fegetexceptflag and FE_ALL_EXCEPT -#include <climits> // INT_MAX -#include <cmath> // std::signbit -#include <condition_variable> // std::condition_variable -#include <cstring> // std::strlen -#include <iterator> // std::back_inserter -#include <list> // std::list -#include <mutex> // std::mutex -#include <string> // std::string -#include <thread> // std::thread -#include <type_traits> // std::is_default_constructible -#if FMT_CPLUSPLUS > 201703L && FMT_HAS_INCLUDE(<version>) -# include <version> -#endif - -#include <limits.h> - -#include <limits> - -#include "gtest-extra.h" -#include "mock-allocator.h" -#include "util.h" -using fmt::basic_memory_buffer; -using fmt::format_error; -using fmt::memory_buffer; -using fmt::runtime; -using fmt::string_view; -using fmt::detail::max_value; -using fmt::detail::uint128_fallback; - -using testing::Return; -using testing::StrictMock; - -#ifdef __cpp_lib_concepts -static_assert(std::output_iterator<fmt::appender, char>); -#endif - -enum { buffer_size = 256 }; - -TEST(uint128_test, ctor) { - auto n = uint128_fallback(); - EXPECT_EQ(n, 0); - n = uint128_fallback(42); - EXPECT_EQ(n, 42); - EXPECT_EQ(static_cast<uint64_t>(n), 42); -} - -TEST(uint128_test, shift) { - auto n = uint128_fallback(42); - n = n << 64; - EXPECT_EQ(static_cast<uint64_t>(n), 0); - n = n >> 64; - EXPECT_EQ(static_cast<uint64_t>(n), 42); - n = n << 62; - EXPECT_EQ(static_cast<uint64_t>(n >> 64), 0xa); - EXPECT_EQ(static_cast<uint64_t>(n), 0x8000000000000000); - n = n >> 62; - EXPECT_EQ(static_cast<uint64_t>(n), 42); - EXPECT_EQ(uint128_fallback(1) << 112, uint128_fallback(0x1000000000000, 0)); - EXPECT_EQ(uint128_fallback(0x1000000000000, 0) >> 112, uint128_fallback(1)); -} - -TEST(uint128_test, minus) { - auto n = uint128_fallback(42); - EXPECT_EQ(n - 2, 40); -} - -TEST(uint128_test, plus_assign) { - auto n = uint128_fallback(32); - n += uint128_fallback(10); - EXPECT_EQ(n, 42); - n = uint128_fallback(max_value<uint64_t>()); - n += uint128_fallback(1); - EXPECT_EQ(n, uint128_fallback(1) << 64); -} - -TEST(uint128_test, multiply) { - auto n = uint128_fallback(2251799813685247); - n = n * 3611864890; - EXPECT_EQ(static_cast<uint64_t>(n >> 64), 440901); -} - -template <typename Float> void check_isfinite() { - using fmt::detail::isfinite; - EXPECT_TRUE(isfinite(Float(0.0))); - EXPECT_TRUE(isfinite(Float(42.0))); - EXPECT_TRUE(isfinite(Float(-42.0))); - EXPECT_TRUE(isfinite(Float(fmt::detail::max_value<double>()))); - // Use double because std::numeric_limits is broken for __float128. - using limits = std::numeric_limits<double>; - FMT_CONSTEXPR20 auto result = isfinite(Float(limits::infinity())); - EXPECT_FALSE(result); - EXPECT_FALSE(isfinite(Float(limits::infinity()))); - EXPECT_FALSE(isfinite(Float(-limits::infinity()))); - EXPECT_FALSE(isfinite(Float(limits::quiet_NaN()))); - EXPECT_FALSE(isfinite(Float(-limits::quiet_NaN()))); -} - -TEST(float_test, isfinite) { - check_isfinite<double>(); -#if FMT_USE_FLOAT128 - check_isfinite<fmt::detail::float128>(); -#endif -} - -void check_no_fp_exception() { - fexcept_t fe; - fegetexceptflag(&fe, FE_ALL_EXCEPT); - - // No exception flags should have been set - EXPECT_TRUE(fe == 0); -} - -template <typename Float> void check_isnan() { - using fmt::detail::isnan; - EXPECT_FALSE(isnan(Float(0.0))); - EXPECT_FALSE(isnan(Float(42.0))); - EXPECT_FALSE(isnan(Float(-42.0))); - EXPECT_FALSE(isnan(Float(fmt::detail::max_value<double>()))); - // Use double because std::numeric_limits is broken for __float128. - using limits = std::numeric_limits<double>; - EXPECT_FALSE(isnan(Float(limits::infinity()))); - EXPECT_FALSE(isnan(Float(-limits::infinity()))); - EXPECT_TRUE(isnan(Float(limits::quiet_NaN()))); - EXPECT_TRUE(isnan(Float(-limits::quiet_NaN()))); - - // Sanity check: make sure no error has occurred before we start - check_no_fp_exception(); - - // Check that no exception is raised for the non-NaN case - isnan(Float(42.0)); - check_no_fp_exception(); - - // Check that no exception is raised for the NaN case - isnan(Float(limits::quiet_NaN())); - check_no_fp_exception(); -} - -TEST(float_test, isnan) { - check_isnan<double>(); -#if FMT_USE_FLOAT128 - check_isnan<fmt::detail::float128>(); -#endif -} - -struct uint32_pair { - uint32_t u[2]; -}; - -TEST(util_test, bit_cast) { - auto s = fmt::detail::bit_cast<uint32_pair>(uint64_t{42}); - EXPECT_EQ(fmt::detail::bit_cast<uint64_t>(s), 42ull); - s = fmt::detail::bit_cast<uint32_pair>(~uint64_t{0}); - EXPECT_EQ(fmt::detail::bit_cast<uint64_t>(s), ~0ull); -} - -// Increment a number in a string. -void increment(char* s) { - for (int i = static_cast<int>(std::strlen(s)) - 1; i >= 0; --i) { - if (s[i] != '9') { - ++s[i]; - break; - } - s[i] = '0'; - } -} - -TEST(util_test, increment) { - char s[10] = "123"; - increment(s); - EXPECT_STREQ("124", s); - s[2] = '8'; - increment(s); - EXPECT_STREQ("129", s); - increment(s); - EXPECT_STREQ("130", s); - s[1] = s[2] = '9'; - increment(s); - EXPECT_STREQ("200", s); -} - -TEST(util_test, parse_nonnegative_int) { - auto s = fmt::string_view("10000000000"); - auto begin = s.begin(), end = s.end(); - EXPECT_EQ(fmt::detail::parse_nonnegative_int(begin, end, -1), -1); - s = "2147483649"; - begin = s.begin(); - end = s.end(); - EXPECT_EQ(fmt::detail::parse_nonnegative_int(begin, end, -1), -1); -} - -TEST(util_test, utf8_to_utf16) { - auto u = fmt::detail::utf8_to_utf16("лошадка"); - EXPECT_EQ(L"\x043B\x043E\x0448\x0430\x0434\x043A\x0430", u.str()); - EXPECT_EQ(7, u.size()); - // U+10437 { DESERET SMALL LETTER YEE } - EXPECT_EQ(L"\xD801\xDC37", fmt::detail::utf8_to_utf16("𐐷").str()); - EXPECT_THROW_MSG(fmt::detail::utf8_to_utf16("\xc3\x28"), std::runtime_error, - "invalid utf8"); - EXPECT_THROW_MSG(fmt::detail::utf8_to_utf16(fmt::string_view("л", 1)), - std::runtime_error, "invalid utf8"); - EXPECT_EQ(L"123456", fmt::detail::utf8_to_utf16("123456").str()); -} - -TEST(util_test, utf8_to_utf16_empty_string) { - auto s = std::string(); - auto u = fmt::detail::utf8_to_utf16(s.c_str()); - EXPECT_EQ(L"", u.str()); - EXPECT_EQ(s.size(), u.size()); -} - -TEST(util_test, allocator_ref) { - using test_allocator_ref = allocator_ref<mock_allocator<int>>; - auto check_forwarding = [](mock_allocator<int>& alloc, - test_allocator_ref& ref) { - int mem; - // Check if value_type is properly defined. - allocator_ref<mock_allocator<int>>::value_type* ptr = &mem; - // Check forwarding. - EXPECT_CALL(alloc, allocate(42)).WillOnce(Return(ptr)); - ref.allocate(42); - EXPECT_CALL(alloc, deallocate(ptr, 42)); - ref.deallocate(ptr, 42); - }; - - StrictMock<mock_allocator<int>> alloc; - auto ref = test_allocator_ref(&alloc); - // Check if allocator_ref forwards to the underlying allocator. - check_forwarding(alloc, ref); - test_allocator_ref ref2(ref); - check_forwarding(alloc, ref2); - test_allocator_ref ref3; - EXPECT_EQ(nullptr, ref3.get()); - ref3 = ref; - check_forwarding(alloc, ref3); -} - -TEST(util_test, format_system_error) { - fmt::memory_buffer message; - fmt::format_system_error(message, EDOM, "test"); - auto ec = std::error_code(EDOM, std::generic_category()); - EXPECT_EQ(to_string(message), std::system_error(ec, "test").what()); - message = fmt::memory_buffer(); - - // Check if std::allocator throws on allocating max size_t / 2 chars. - size_t max_size = max_value<size_t>() / 2; - bool throws_on_alloc = false; - try { - auto alloc = std::allocator<char>(); - alloc.deallocate(alloc.allocate(max_size), max_size); - } catch (const std::bad_alloc&) { - throws_on_alloc = true; - } - if (!throws_on_alloc) { - fmt::print(stderr, "warning: std::allocator allocates {} chars\n", - max_size); - return; - } -} - -TEST(util_test, system_error) { - auto test_error = fmt::system_error(EDOM, "test"); - auto ec = std::error_code(EDOM, std::generic_category()); - EXPECT_STREQ(test_error.what(), std::system_error(ec, "test").what()); - EXPECT_EQ(test_error.code(), ec); - - auto error = std::system_error(std::error_code()); - try { - throw fmt::system_error(EDOM, "test {}", "error"); - } catch (const std::system_error& e) { - error = e; - } - fmt::memory_buffer message; - fmt::format_system_error(message, EDOM, "test error"); - EXPECT_EQ(error.what(), to_string(message)); - EXPECT_EQ(error.code(), std::error_code(EDOM, std::generic_category())); -} - -TEST(util_test, report_system_error) { - fmt::memory_buffer out; - fmt::format_system_error(out, EDOM, "test error"); - out.push_back('\n'); - EXPECT_WRITE(stderr, fmt::report_system_error(EDOM, "test error"), - to_string(out)); -} - -TEST(memory_buffer_test, ctor) { - basic_memory_buffer<char, 123> buffer; - EXPECT_EQ(static_cast<size_t>(0), buffer.size()); - EXPECT_EQ(123u, buffer.capacity()); -} - -using std_allocator = allocator_ref<std::allocator<char>>; - -TEST(memory_buffer_test, move_ctor_inline_buffer) { - auto check_move_buffer = - [](const char* str, basic_memory_buffer<char, 5, std_allocator>& buffer) { - std::allocator<char>* alloc = buffer.get_allocator().get(); - basic_memory_buffer<char, 5, std_allocator> buffer2(std::move(buffer)); - // Move shouldn't destroy the inline content of the first buffer. - EXPECT_EQ(std::string(buffer.data(), buffer.size()), str); - EXPECT_EQ(std::string(&buffer2[0], buffer2.size()), str); - EXPECT_EQ(buffer2.capacity(), 5u); - // Move should transfer allocator. - EXPECT_EQ(buffer.get_allocator().get(), nullptr); - EXPECT_EQ(buffer2.get_allocator().get(), alloc); - }; - - auto alloc = std::allocator<char>(); - basic_memory_buffer<char, 5, std_allocator> buffer((std_allocator(&alloc))); - buffer.append(string_view("test")); - check_move_buffer("test", buffer); - // Adding one more character fills the inline buffer, but doesn't cause - // dynamic allocation. - buffer.push_back('a'); - check_move_buffer("testa", buffer); -} - -TEST(memory_buffer_test, move_ctor_dynamic_buffer) { - auto alloc = std::allocator<char>(); - basic_memory_buffer<char, 4, std_allocator> buffer((std_allocator(&alloc))); - const char test[] = "test"; - buffer.append(test, test + 4); - const char* inline_buffer_ptr = &buffer[0]; - // Adding one more character causes the content to move from the inline to - // a dynamically allocated buffer. - buffer.push_back('a'); - basic_memory_buffer<char, 4, std_allocator> buffer2(std::move(buffer)); - // Move should rip the guts of the first buffer. - EXPECT_EQ(&buffer[0], inline_buffer_ptr); - EXPECT_EQ(buffer.size(), 0); - EXPECT_EQ(std::string(&buffer2[0], buffer2.size()), "testa"); - EXPECT_GT(buffer2.capacity(), 4u); -} - -using std_allocator_noprop = allocator_ref<std::allocator<char>, false>; - -TEST(memory_buffer_test, move_ctor_inline_buffer_non_propagating) { - auto check_move_buffer = - [](const char* str, - basic_memory_buffer<char, 5, std_allocator_noprop>& buffer) { - std::allocator<char>* original_alloc_ptr = buffer.get_allocator().get(); - const char* original_data_ptr = &buffer[0]; - basic_memory_buffer<char, 5, std_allocator_noprop> buffer2( - std::move(buffer)); - const char* new_data_ptr = &buffer2[0]; - EXPECT_NE(new_data_ptr, original_data_ptr); - EXPECT_EQ(std::string(buffer.data(), buffer.size()), str); - EXPECT_EQ(std::string(buffer2.data(), buffer2.size()), str); - EXPECT_EQ(buffer2.capacity(), 5u); - // Allocators should NOT be transferred; they remain distinct instances. - // The original buffer's allocator pointer should still be valid (not - // nullptr). - EXPECT_EQ(buffer.get_allocator().get(), original_alloc_ptr); - EXPECT_NE(buffer2.get_allocator().get(), original_alloc_ptr); - }; - auto alloc = std::allocator<char>(); - basic_memory_buffer<char, 5, std_allocator_noprop> buffer( - (std_allocator_noprop(&alloc))); - buffer.append(string_view("test", 4)); - check_move_buffer("test", buffer); - buffer.push_back('a'); - check_move_buffer("testa", buffer); -} - -TEST(memory_buffer_test, move_ctor_dynamic_buffer_non_propagating) { - auto alloc = std::allocator<char>(); - basic_memory_buffer<char, 4, std_allocator_noprop> buffer( - (std_allocator_noprop(&alloc))); - const char test[] = "test"; - buffer.append(test, test + 4); - const char* inline_buffer_ptr = &buffer[0]; - buffer.push_back('a'); - EXPECT_NE(buffer.data(), inline_buffer_ptr); - std::allocator<char>* original_alloc_ptr = buffer.get_allocator().get(); - basic_memory_buffer<char, 4, std_allocator_noprop> buffer2; - buffer2 = std::move(buffer); - EXPECT_EQ(std::string(buffer2.data(), buffer2.size()), "testa"); - EXPECT_GT(buffer2.capacity(), 4u); - EXPECT_NE(buffer2.data(), inline_buffer_ptr); - EXPECT_EQ(buffer.get_allocator().get(), original_alloc_ptr); - EXPECT_NE(buffer2.get_allocator().get(), original_alloc_ptr); -} - -void check_move_assign_buffer(const char* str, - basic_memory_buffer<char, 5>& buffer) { - basic_memory_buffer<char, 5> buffer2; - buffer2 = std::move(buffer); - // Move shouldn't destroy the inline content of the first buffer. - EXPECT_EQ(std::string(&buffer[0], buffer.size()), str); - EXPECT_EQ(std::string(&buffer2[0], buffer2.size()), str); - EXPECT_EQ(buffer2.capacity(), 5u); -} - -TEST(memory_buffer_test, move_assignment) { - basic_memory_buffer<char, 5> buffer; - const char test[] = "test"; - buffer.append(test, test + 4); - check_move_assign_buffer("test", buffer); - // Adding one more character fills the inline buffer, but doesn't cause - // dynamic allocation. - buffer.push_back('a'); - check_move_assign_buffer("testa", buffer); - const char* inline_buffer_ptr = &buffer[0]; - // Adding one more character causes the content to move from the inline to - // a dynamically allocated buffer. - buffer.push_back('b'); - basic_memory_buffer<char, 5> buffer2; - buffer2 = std::move(buffer); - // Move should rip the guts of the first buffer. - EXPECT_EQ(buffer.data(), inline_buffer_ptr); - EXPECT_EQ(std::string(buffer2.data(), buffer2.size()), "testab"); - EXPECT_GT(buffer2.capacity(), 5u); -} - -TEST(memory_buffer_test, grow) { - using allocator = allocator_ref<mock_allocator<int>>; - mock_allocator<int> alloc; - basic_memory_buffer<int, 10, allocator> buffer((allocator(&alloc))); - buffer.resize(7); - using fmt::detail::to_unsigned; - for (int i = 0; i < 7; ++i) buffer[to_unsigned(i)] = i * i; - EXPECT_EQ(10u, buffer.capacity()); - int mem[20]; - mem[7] = 0xdead; - EXPECT_CALL(alloc, allocate(20)).WillOnce(Return(mem)); - buffer.try_reserve(20); - EXPECT_EQ(20u, buffer.capacity()); - // Check if size elements have been copied - for (int i = 0; i < 7; ++i) EXPECT_EQ(i * i, buffer[to_unsigned(i)]); - // and no more than that. - EXPECT_EQ(0xdead, buffer[7]); - EXPECT_CALL(alloc, deallocate(mem, 20)); -} - -TEST(memory_buffer_test, allocator) { - using test_allocator = allocator_ref<mock_allocator<char>>; - basic_memory_buffer<char, 10, test_allocator> buffer; - EXPECT_EQ(nullptr, buffer.get_allocator().get()); - StrictMock<mock_allocator<char>> alloc; - char mem; - { - basic_memory_buffer<char, 10, test_allocator> buffer2( - (test_allocator(&alloc))); - EXPECT_EQ(&alloc, buffer2.get_allocator().get()); - size_t size = 2 * fmt::inline_buffer_size; - EXPECT_CALL(alloc, allocate(size)).WillOnce(Return(&mem)); - buffer2.reserve(size); - EXPECT_CALL(alloc, deallocate(&mem, size)); - } -} - -TEST(memory_buffer_test, exception_in_deallocate) { - using test_allocator = allocator_ref<mock_allocator<char>>; - StrictMock<mock_allocator<char>> alloc; - basic_memory_buffer<char, 10, test_allocator> buffer( - (test_allocator(&alloc))); - size_t size = 2 * fmt::inline_buffer_size; - auto mem = std::vector<char>(size); - { - EXPECT_CALL(alloc, allocate(size)).WillOnce(Return(&mem[0])); - buffer.resize(size); - std::fill(&buffer[0], &buffer[0] + size, 'x'); - } - auto mem2 = std::vector<char>(2 * size); - { - EXPECT_CALL(alloc, allocate(2 * size)).WillOnce(Return(&mem2[0])); - auto e = std::exception(); - EXPECT_CALL(alloc, deallocate(&mem[0], size)).WillOnce(testing::Throw(e)); - EXPECT_THROW(buffer.reserve(2 * size), std::exception); - EXPECT_EQ(&mem2[0], &buffer[0]); - // Check that the data has been copied. - for (size_t i = 0; i < size; ++i) EXPECT_EQ('x', buffer[i]); - } - EXPECT_CALL(alloc, deallocate(&mem2[0], 2 * size)); -} - -template <typename Allocator, size_t MaxSize> -class max_size_allocator : public Allocator { - public: - using typename Allocator::value_type; - size_t max_size() const noexcept { return MaxSize; } - value_type* allocate(size_t n) { - if (n > max_size()) { - throw std::length_error("size > max_size"); - } - return std::allocator_traits<Allocator>::allocate( - *static_cast<Allocator*>(this), n); - } - void deallocate(value_type* p, size_t n) { - std::allocator_traits<Allocator>::deallocate(*static_cast<Allocator*>(this), - p, n); - } -}; - -TEST(memory_buffer_test, max_size_allocator) { - // 160 = 128 + 32 - using test_allocator = max_size_allocator<std::allocator<char>, 160>; - basic_memory_buffer<char, 10, test_allocator> buffer; - buffer.resize(128); - // new_capacity = 128 + 128/2 = 192 > 160 - buffer.resize(160); // Shouldn't throw. -} - -TEST(memory_buffer_test, max_size_allocator_overflow) { - using test_allocator = max_size_allocator<std::allocator<char>, 160>; - basic_memory_buffer<char, 10, test_allocator> buffer; - EXPECT_THROW(buffer.resize(161), std::exception); -} - -TEST(memory_buffer_test, back_insert_iterator) { - fmt::memory_buffer buf; - using iterator = decltype(std::back_inserter(buf)); - EXPECT_TRUE(fmt::detail::is_back_insert_iterator<iterator>::value); -} - -TEST(format_test, digits2_alignment) { - auto p = - fmt::detail::bit_cast<fmt::detail::uintptr_t>(fmt::detail::digits2(0)); - EXPECT_EQ(p % 2, 0); -} - -TEST(format_test, exception_from_lib) { - EXPECT_THROW_MSG(fmt::report_error("test"), format_error, "test"); -} - -TEST(format_test, escape) { - EXPECT_EQ(fmt::format("{{"), "{"); - EXPECT_EQ(fmt::format("before {{"), "before {"); - EXPECT_EQ(fmt::format("{{ after"), "{ after"); - EXPECT_EQ(fmt::format("before {{ after"), "before { after"); - - EXPECT_EQ(fmt::format("}}"), "}"); - EXPECT_EQ(fmt::format("before }}"), "before }"); - EXPECT_EQ(fmt::format("}} after"), "} after"); - EXPECT_EQ(fmt::format("before }} after"), "before } after"); - - EXPECT_EQ(fmt::format("{{}}"), "{}"); - EXPECT_EQ(fmt::format("{{{0}}}", 42), "{42}"); -} - -TEST(format_test, unmatched_braces) { - EXPECT_THROW_MSG((void)fmt::format(runtime("{")), format_error, - "invalid format string"); - EXPECT_THROW_MSG((void)fmt::format(runtime("}")), format_error, - "unmatched '}' in format string"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0{}")), format_error, - "invalid format string"); -} - -TEST(format_test, no_args) { EXPECT_EQ(fmt::format("test"), "test"); } - -TEST(format_test, args_in_different_positions) { - EXPECT_EQ(fmt::format("{0}", 42), "42"); - EXPECT_EQ(fmt::format("before {0}", 42), "before 42"); - EXPECT_EQ(fmt::format("{0} after", 42), "42 after"); - EXPECT_EQ(fmt::format("before {0} after", 42), "before 42 after"); - EXPECT_EQ(fmt::format("{0} = {1}", "answer", 42), "answer = 42"); - EXPECT_EQ(fmt::format("{1} is the {0}", "answer", 42), "42 is the answer"); - EXPECT_EQ(fmt::format("{0}{1}{0}", "abra", "cad"), "abracadabra"); -} - -TEST(format_test, arg_errors) { - EXPECT_THROW_MSG((void)fmt::format(runtime("{")), format_error, - "invalid format string"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{?}")), format_error, - "invalid format string"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0")), format_error, - "invalid format string"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0}")), format_error, - "argument not found"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{00}"), 42), format_error, - "invalid format string"); - - auto int_max = std::to_string(INT_MAX); - EXPECT_THROW_MSG((void)fmt::format(runtime("{" + int_max)), format_error, - "invalid format string"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{" + int_max + "}")), - format_error, "argument not found"); - - auto int_maxer = std::to_string(INT_MAX + 1u); - EXPECT_THROW_MSG((void)fmt::format(runtime("{" + int_maxer)), format_error, - "invalid format string"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{" + int_maxer + "}")), - format_error, "argument not found"); -} - -TEST(format_test, display_width_precision) { - EXPECT_EQ(fmt::format("{:.5}", "🐱🐱🐱"), "🐱🐱"); -} - -template <int N> struct test_format { - template <typename... T> - static auto format(fmt::string_view fmt, const T&... args) -> std::string { - return test_format<N - 1>::format(fmt, N - 1, args...); - } -}; - -template <> struct test_format<0> { - template <typename... T> - static auto format(fmt::string_view fmt, const T&... args) -> std::string { - return fmt::format(runtime(fmt), args...); - } -}; - -TEST(format_test, many_args) { - EXPECT_EQ("19", test_format<20>::format("{19}")); - EXPECT_THROW_MSG(test_format<20>::format("{20}"), format_error, - "argument not found"); - EXPECT_THROW_MSG(test_format<21>::format("{21}"), format_error, - "argument not found"); - using fmt::detail::max_packed_args; - std::string format_str = fmt::format("{{{}}}", max_packed_args + 1); - EXPECT_THROW_MSG(test_format<max_packed_args>::format(format_str), - format_error, "argument not found"); -} - -TEST(format_test, named_arg) { - EXPECT_EQ("1/a/A", fmt::format("{_1}/{a_}/{A_}", fmt::arg("a_", 'a'), - fmt::arg("A_", "A"), fmt::arg("_1", 1))); - EXPECT_EQ(fmt::format("{0:{width}}", -42, fmt::arg("width", 4)), " -42"); - EXPECT_EQ(fmt::format("{value:{width}}", fmt::arg("value", -42), - fmt::arg("width", 4)), - " -42"); - EXPECT_EQ("st", - fmt::format("{0:.{precision}}", "str", fmt::arg("precision", 2))); - EXPECT_EQ(fmt::format("{} {two}", 1, fmt::arg("two", 2)), "1 2"); - EXPECT_EQ("42", - fmt::format("{c}", fmt::arg("a", 0), fmt::arg("b", 0), - fmt::arg("c", 42), fmt::arg("d", 0), fmt::arg("e", 0), - fmt::arg("f", 0), fmt::arg("g", 0), fmt::arg("h", 0), - fmt::arg("i", 0), fmt::arg("j", 0), fmt::arg("k", 0), - fmt::arg("l", 0), fmt::arg("m", 0), fmt::arg("n", 0), - fmt::arg("o", 0), fmt::arg("p", 0))); - EXPECT_THROW_MSG((void)fmt::format(runtime("{a}")), format_error, - "argument not found"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{a}"), 42), format_error, - "argument not found"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{a} {}"), fmt::arg("a", 2), 42), - format_error, - "cannot switch from manual to automatic argument indexing"); - EXPECT_THROW_MSG( - (void)fmt::format("{a}", fmt::arg("a", 1), fmt::arg("a", 10)), - format_error, "duplicate named arg"); -} - -TEST(format_test, auto_arg_index) { - EXPECT_EQ(fmt::format("{}{}{}", 'a', 'b', 'c'), "abc"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0}{}"), 'a', 'b'), format_error, - "cannot switch from manual to automatic argument indexing"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{}{0}"), 'a', 'b'), format_error, - "cannot switch from automatic to manual argument indexing"); - EXPECT_EQ(fmt::format("{:.{}}", 1.2345, 2), "1.2"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0}:.{}"), 1.2345, 2), - format_error, - "cannot switch from manual to automatic argument indexing"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{:.{0}}"), 1.2345, 2), - format_error, - "cannot switch from automatic to manual argument indexing"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{}")), format_error, - "argument not found"); -} - -TEST(format_test, empty_specs) { EXPECT_EQ(fmt::format("{0:}", 42), "42"); } - -TEST(format_test, left_align) { - EXPECT_EQ(fmt::format("{0:<4}", 42), "42 "); - EXPECT_EQ(fmt::format("{0:<4o}", 042), "42 "); - EXPECT_EQ(fmt::format("{0:<4x}", 0x42), "42 "); - EXPECT_EQ(fmt::format("{0:<5}", -42), "-42 "); - EXPECT_EQ(fmt::format("{0:<5}", 42u), "42 "); - EXPECT_EQ(fmt::format("{0:<5}", -42l), "-42 "); - EXPECT_EQ(fmt::format("{0:<5}", 42ul), "42 "); - EXPECT_EQ(fmt::format("{0:<5}", -42ll), "-42 "); - EXPECT_EQ(fmt::format("{0:<5}", 42ull), "42 "); - EXPECT_EQ(fmt::format("{0:<5}", -42.0), "-42 "); - EXPECT_EQ(fmt::format("{0:<5}", -42.0l), "-42 "); - EXPECT_EQ(fmt::format("{0:<5}", 'c'), "c "); - EXPECT_EQ(fmt::format("{0:<5}", "abc"), "abc "); - EXPECT_EQ(fmt::format("{0:<8}", reinterpret_cast<void*>(0xface)), "0xface "); -} - -TEST(format_test, right_align) { - EXPECT_EQ(fmt::format("{0:>4}", 42), " 42"); - EXPECT_EQ(fmt::format("{0:>4o}", 042), " 42"); - EXPECT_EQ(fmt::format("{0:>4x}", 0x42), " 42"); - EXPECT_EQ(fmt::format("{0:>5}", -42), " -42"); - EXPECT_EQ(fmt::format("{0:>5}", 42u), " 42"); - EXPECT_EQ(fmt::format("{0:>5}", -42l), " -42"); - EXPECT_EQ(fmt::format("{0:>5}", 42ul), " 42"); - EXPECT_EQ(fmt::format("{0:>5}", -42ll), " -42"); - EXPECT_EQ(fmt::format("{0:>5}", 42ull), " 42"); - EXPECT_EQ(fmt::format("{0:>5}", -42.0), " -42"); - EXPECT_EQ(fmt::format("{0:>5}", -42.0l), " -42"); - EXPECT_EQ(fmt::format("{0:>5}", 'c'), " c"); - EXPECT_EQ(fmt::format("{0:>5}", "abc"), " abc"); - EXPECT_EQ(fmt::format("{0:>8}", reinterpret_cast<void*>(0xface)), " 0xface"); -} - -TEST(format_test, center_align) { - EXPECT_EQ(fmt::format("{0:^5}", 42), " 42 "); - EXPECT_EQ(fmt::format("{0:^5o}", 042), " 42 "); - EXPECT_EQ(fmt::format("{0:^5x}", 0x42), " 42 "); - EXPECT_EQ(fmt::format("{0:^5}", -42), " -42 "); - EXPECT_EQ(fmt::format("{0:^5}", 42u), " 42 "); - EXPECT_EQ(fmt::format("{0:^5}", -42l), " -42 "); - EXPECT_EQ(fmt::format("{0:^5}", 42ul), " 42 "); - EXPECT_EQ(fmt::format("{0:^5}", -42ll), " -42 "); - EXPECT_EQ(fmt::format("{0:^5}", 42ull), " 42 "); - EXPECT_EQ(fmt::format("{0:^5}", -42.0), " -42 "); - EXPECT_EQ(fmt::format("{0:^5}", -42.0l), " -42 "); - EXPECT_EQ(fmt::format("{0:^5}", 'c'), " c "); - EXPECT_EQ(fmt::format("{0:^6}", "abc"), " abc "); - EXPECT_EQ(fmt::format("{0:^8}", reinterpret_cast<void*>(0xface)), " 0xface "); -} - -TEST(format_test, fill) { - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:{<5}"), 'c'), format_error, - "invalid fill character '{'"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:{<5}}"), 'c'), format_error, - "invalid fill character '{'"); - EXPECT_EQ(fmt::format("{0:*>4}", 42), "**42"); - EXPECT_EQ(fmt::format("{0:*>5}", -42), "**-42"); - EXPECT_EQ(fmt::format("{0:*>5}", 42u), "***42"); - EXPECT_EQ(fmt::format("{0:*>5}", -42l), "**-42"); - EXPECT_EQ(fmt::format("{0:*>5}", 42ul), "***42"); - EXPECT_EQ(fmt::format("{0:*>5}", -42ll), "**-42"); - EXPECT_EQ(fmt::format("{0:*>5}", 42ull), "***42"); - EXPECT_EQ(fmt::format("{0:*>5}", -42.0), "**-42"); - EXPECT_EQ(fmt::format("{0:*>5}", -42.0l), "**-42"); - EXPECT_EQ(fmt::format("{0:*<5}", 'c'), "c****"); - EXPECT_EQ(fmt::format("{0:*<5}", "abc"), "abc**"); - EXPECT_EQ("**0xface", - fmt::format("{0:*>8}", reinterpret_cast<void*>(0xface))); - EXPECT_EQ(fmt::format("{:}=", "foo"), "foo="); - EXPECT_EQ(std::string("\0\0\0*", 4), - fmt::format(string_view("{:\0>4}", 6), '*')); - EXPECT_EQ(fmt::format("{0:ж>4}", 42), "жж42"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{:\x80\x80\x80\x80\x80>}"), 0), - format_error, "invalid format specifier"); -} - -TEST(format_test, plus_sign) { - EXPECT_EQ(fmt::format("{0:+}", 42), "+42"); - EXPECT_EQ(fmt::format("{0:+}", -42), "-42"); - EXPECT_EQ(fmt::format("{0:+}", 42), "+42"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:+}"), 42u), format_error, - "invalid format specifier"); - EXPECT_EQ(fmt::format("{0:+}", 42l), "+42"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:+}"), 42ul), format_error, - "invalid format specifier"); - EXPECT_EQ(fmt::format("{0:+}", 42ll), "+42"); -#if FMT_USE_INT128 - EXPECT_EQ(fmt::format("{0:+}", __int128_t(42)), "+42"); -#endif - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:+}"), 42ull), format_error, - "invalid format specifier"); - EXPECT_EQ(fmt::format("{0:+}", 42.0), "+42"); - EXPECT_EQ(fmt::format("{0:+}", 42.0l), "+42"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:+}"), 'c'), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:+}"), "abc"), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG( - (void)fmt::format(runtime("{0:+}"), reinterpret_cast<void*>(0x42)), - format_error, "invalid format specifier"); -} - -TEST(format_test, minus_sign) { - EXPECT_EQ(fmt::format("{0:-}", 42), "42"); - EXPECT_EQ(fmt::format("{0:-}", -42), "-42"); - EXPECT_EQ(fmt::format("{0:-}", 42), "42"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:-}"), 42u), format_error, - "invalid format specifier"); - EXPECT_EQ(fmt::format("{0:-}", 42l), "42"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:-}"), 42ul), format_error, - "invalid format specifier"); - EXPECT_EQ(fmt::format("{0:-}", 42ll), "42"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:-}"), 42ull), format_error, - "invalid format specifier"); - EXPECT_EQ(fmt::format("{0:-}", 42.0), "42"); - EXPECT_EQ(fmt::format("{0:-}", 42.0l), "42"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:-}"), 'c'), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:-}"), "abc"), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG( - (void)fmt::format(runtime("{0:-}"), reinterpret_cast<void*>(0x42)), - format_error, "invalid format specifier"); -} - -TEST(format_test, space_sign) { - EXPECT_EQ(fmt::format("{0: }", 42), " 42"); - EXPECT_EQ(fmt::format("{0: }", -42), "-42"); - EXPECT_EQ(fmt::format("{0: }", 42), " 42"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0: }"), 42u), format_error, - "invalid format specifier"); - EXPECT_EQ(fmt::format("{0: }", 42l), " 42"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0: }"), 42ul), format_error, - "invalid format specifier"); - EXPECT_EQ(fmt::format("{0: }", 42ll), " 42"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0: }"), 42ull), format_error, - "invalid format specifier"); - EXPECT_EQ(fmt::format("{0: }", 42.0), " 42"); - EXPECT_EQ(fmt::format("{0: }", 42.0l), " 42"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0: }"), 'c'), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0: }"), "abc"), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG( - (void)fmt::format(runtime("{0: }"), reinterpret_cast<void*>(0x42)), - format_error, "invalid format specifier"); -} - -TEST(format_test, hash_flag) { - EXPECT_EQ(fmt::format("{0:#}", 42), "42"); - EXPECT_EQ(fmt::format("{0:#}", -42), "-42"); - EXPECT_EQ(fmt::format("{0:#b}", 42), "0b101010"); - EXPECT_EQ(fmt::format("{0:#B}", 42), "0B101010"); - EXPECT_EQ(fmt::format("{0:#b}", -42), "-0b101010"); - EXPECT_EQ(fmt::format("{0:#x}", 0x42), "0x42"); - EXPECT_EQ(fmt::format("{0:#X}", 0x42), "0X42"); - EXPECT_EQ(fmt::format("{0:#x}", -0x42), "-0x42"); - EXPECT_EQ(fmt::format("{0:#o}", 0), "0"); - EXPECT_EQ(fmt::format("{0:#o}", 042), "042"); - EXPECT_EQ(fmt::format("{0:#o}", -042), "-042"); - EXPECT_EQ(fmt::format("{0:#}", 42u), "42"); - EXPECT_EQ(fmt::format("{0:#x}", 0x42u), "0x42"); - EXPECT_EQ(fmt::format("{0:#o}", 042u), "042"); - - EXPECT_EQ(fmt::format("{0:#}", -42l), "-42"); - EXPECT_EQ(fmt::format("{0:#x}", 0x42l), "0x42"); - EXPECT_EQ(fmt::format("{0:#x}", -0x42l), "-0x42"); - EXPECT_EQ(fmt::format("{0:#o}", 042l), "042"); - EXPECT_EQ(fmt::format("{0:#o}", -042l), "-042"); - EXPECT_EQ(fmt::format("{0:#}", 42ul), "42"); - EXPECT_EQ(fmt::format("{0:#x}", 0x42ul), "0x42"); - EXPECT_EQ(fmt::format("{0:#o}", 042ul), "042"); - - EXPECT_EQ(fmt::format("{0:#}", -42ll), "-42"); - EXPECT_EQ(fmt::format("{0:#x}", 0x42ll), "0x42"); - EXPECT_EQ(fmt::format("{0:#x}", -0x42ll), "-0x42"); - EXPECT_EQ(fmt::format("{0:#o}", 042ll), "042"); - EXPECT_EQ(fmt::format("{0:#o}", -042ll), "-042"); - EXPECT_EQ(fmt::format("{0:#}", 42ull), "42"); - EXPECT_EQ(fmt::format("{0:#x}", 0x42ull), "0x42"); - EXPECT_EQ(fmt::format("{0:#o}", 042ull), "042"); - - EXPECT_EQ(fmt::format("{0:#}", -42.0), "-42."); - EXPECT_EQ(fmt::format("{0:#}", -42.0l), "-42."); - EXPECT_EQ(fmt::format("{:#.0e}", 42.0), "4.e+01"); - EXPECT_EQ(fmt::format("{:#.0f}", 0.01), "0."); - EXPECT_EQ(fmt::format("{:#.2g}", 0.5), "0.50"); - EXPECT_EQ(fmt::format("{:#.0f}", 0.5), "0."); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:#"), 'c'), format_error, - "invalid format specifier for char"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:#}"), 'c'), format_error, - "invalid format specifier for char"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:#}"), "abc"), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG( - (void)fmt::format(runtime("{0:#}"), reinterpret_cast<void*>(0x42)), - format_error, "invalid format specifier"); -} - -TEST(format_test, zero_flag) { - EXPECT_EQ(fmt::format("{0:0}", 42), "42"); - EXPECT_EQ(fmt::format("{0:05}", -42), "-0042"); - EXPECT_EQ(fmt::format("{0:05}", 42u), "00042"); - EXPECT_EQ(fmt::format("{0:05}", -42l), "-0042"); - EXPECT_EQ(fmt::format("{0:05}", 42ul), "00042"); - EXPECT_EQ(fmt::format("{0:05}", -42ll), "-0042"); - EXPECT_EQ(fmt::format("{0:05}", 42ull), "00042"); - EXPECT_EQ(fmt::format("{0:07}", -42.0), "-000042"); - EXPECT_EQ(fmt::format("{0:07}", -42.0l), "-000042"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:0"), 'c'), format_error, - "invalid format specifier for char"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:05}"), 'c'), format_error, - "invalid format specifier for char"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:05}"), "abc"), format_error, - "format specifier requires numeric argument"); - EXPECT_THROW_MSG( - (void)fmt::format(runtime("{0:05}"), reinterpret_cast<void*>(0x42)), - format_error, "format specifier requires numeric argument"); -} - -TEST(format_test, zero_flag_and_align) { - // If the 0 character and an align option both appear, the 0 character is - // ignored. - EXPECT_EQ(fmt::format("{:<05}", 42), "42 "); - EXPECT_EQ(fmt::format("{:<05}", -42), "-42 "); - EXPECT_EQ(fmt::format("{:^05}", 42), " 42 "); - EXPECT_EQ(fmt::format("{:^05}", -42), " -42 "); - EXPECT_EQ(fmt::format("{:>05}", 42), " 42"); - EXPECT_EQ(fmt::format("{:>05}", -42), " -42"); -} - -TEST(format_test, width) { - auto int_maxer = std::to_string(INT_MAX + 1u); - EXPECT_THROW_MSG((void)fmt::format(runtime("{:" + int_maxer), 0), - format_error, "number is too big"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{:" + int_maxer + "}"), 0), - format_error, "number is too big"); - - EXPECT_EQ(fmt::format("{:4}", -42), " -42"); - EXPECT_EQ(fmt::format("{:5}", 42u), " 42"); - EXPECT_EQ(fmt::format("{:6}", -42l), " -42"); - EXPECT_EQ(fmt::format("{:7}", 42ul), " 42"); - EXPECT_EQ(fmt::format("{:6}", -42ll), " -42"); - EXPECT_EQ(fmt::format("{:7}", 42ull), " 42"); - EXPECT_EQ(fmt::format("{:8}", -1.23), " -1.23"); - EXPECT_EQ(fmt::format("{:9}", -1.23l), " -1.23"); - EXPECT_EQ(fmt::format("{:10}", reinterpret_cast<void*>(0xcafe)), - " 0xcafe"); - EXPECT_EQ(fmt::format("{:11}", 'x'), "x "); - EXPECT_EQ(fmt::format("{:12}", "str"), "str "); - EXPECT_EQ(fmt::format("{:*^5}", "🤡"), "*🤡**"); - EXPECT_EQ(fmt::format("{:*^6}", "🤡"), "**🤡**"); - EXPECT_EQ(fmt::format("{:*^8}", "你好"), "**你好**"); - EXPECT_EQ(fmt::format("{:#6}", 42.0), " 42."); - EXPECT_EQ(fmt::format("{:6c}", static_cast<int>('x')), "x "); - EXPECT_EQ(fmt::format("{:>06.0f}", 0.00884311), " 0"); -} - -TEST(format_test, debug_presentation) { - EXPECT_EQ(fmt::format("{:?}", ""), R"("")"); - - EXPECT_EQ(fmt::format("{:*<5.0?}", "\n"), R"(*****)"); - EXPECT_EQ(fmt::format("{:*<5.1?}", "\n"), R"("****)"); - EXPECT_EQ(fmt::format("{:*<5.2?}", "\n"), R"("\***)"); - EXPECT_EQ(fmt::format("{:*<5.3?}", "\n"), R"("\n**)"); - EXPECT_EQ(fmt::format("{:*<5.4?}", "\n"), R"("\n"*)"); - - EXPECT_EQ(fmt::format("{:*<5.1?}", "Σ"), R"("****)"); - EXPECT_EQ(fmt::format("{:*<5.2?}", "Σ"), R"("Σ***)"); - EXPECT_EQ(fmt::format("{:*<5.3?}", "Σ"), R"("Σ"**)"); - - EXPECT_EQ(fmt::format("{:*<5.1?}", "笑"), R"("****)"); - EXPECT_EQ(fmt::format("{:*<5.2?}", "笑"), R"("****)"); - EXPECT_EQ(fmt::format("{:*<5.3?}", "笑"), R"("笑**)"); - EXPECT_EQ(fmt::format("{:*<5.4?}", "笑"), R"("笑"*)"); - - EXPECT_EQ(fmt::format("{:*<8?}", "туда"), R"("туда"**)"); - EXPECT_EQ(fmt::format("{:*>8?}", "сюда"), R"(**"сюда")"); - EXPECT_EQ(fmt::format("{:*^8?}", "中心"), R"(*"中心"*)"); - - EXPECT_EQ(fmt::format("{:*^14?}", "A\t👈🤯ы猫"), R"(*"A\t👈🤯ы猫"*)"); -} - -auto bad_dynamic_spec_msg = FMT_BUILTIN_TYPES - ? "width/precision is out of range" - : "width/precision is not integer"; - -TEST(format_test, runtime_width) { - auto int_maxer = std::to_string(INT_MAX + 1u); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:{" + int_maxer), 0), - format_error, "invalid format string"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:{" + int_maxer + "}"), 0), - format_error, "argument not found"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:{" + int_maxer + "}}"), 0), - format_error, "argument not found"); - - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:{"), 0), format_error, - "invalid format string"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:{}"), 0), format_error, - "cannot switch from manual to automatic argument indexing"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:{?}}"), 0), format_error, - "invalid format string"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:{1}}"), 0), format_error, - "argument not found"); - - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:{0:}}"), 0), format_error, - "invalid format string"); - - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:{1}}"), 0, -1), format_error, - "width/precision is out of range"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:{1}}"), 0, (INT_MAX + 1u)), - format_error, bad_dynamic_spec_msg); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:{1}}"), 0, -1l), format_error, - bad_dynamic_spec_msg); - if (fmt::detail::const_check(sizeof(long) > sizeof(int))) { - long value = INT_MAX; - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:{1}}"), 0, (value + 1)), - format_error, bad_dynamic_spec_msg); - } - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:{1}}"), 0, (INT_MAX + 1ul)), - format_error, bad_dynamic_spec_msg); - - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:{1}}"), 0, '0'), format_error, - "width/precision is not integer"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:{1}}"), 0, 0.0), format_error, - "width/precision is not integer"); - - EXPECT_EQ(fmt::format("{0:{1}}", -42, 4), " -42"); - EXPECT_EQ(fmt::format("{0:{1}}", 42u, 5), " 42"); - EXPECT_EQ(fmt::format("{0:{1}}", -42l, 6), " -42"); - EXPECT_EQ(fmt::format("{0:{1}}", 42ul, 7), " 42"); - EXPECT_EQ(fmt::format("{0:{1}}", -42ll, 6), " -42"); - EXPECT_EQ(fmt::format("{0:{1}}", 42ull, 7), " 42"); - EXPECT_EQ(fmt::format("{0:{1}}", -1.23, 8), " -1.23"); - EXPECT_EQ(fmt::format("{0:{1}}", -1.23l, 9), " -1.23"); - EXPECT_EQ(" 0xcafe", - fmt::format("{0:{1}}", reinterpret_cast<void*>(0xcafe), 10)); - EXPECT_EQ(fmt::format("{0:{1}}", 'x', 11), "x "); - EXPECT_EQ(fmt::format("{0:{1}}", "str", 12), "str "); - EXPECT_EQ(fmt::format("{:{}}", 42, short(4)), " 42"); -} - -TEST(format_test, exponent_range) { - for (int e = -1074; e <= 1023; ++e) (void)fmt::format("{}", std::ldexp(1, e)); -} - -TEST(format_test, precision) { - char format_str[buffer_size]; - safe_sprintf(format_str, "{0:.%u", UINT_MAX); - increment(format_str + 4); - EXPECT_THROW_MSG((void)fmt::format(runtime(format_str), 0.0), format_error, - "number is too big"); - size_t size = std::strlen(format_str); - format_str[size] = '}'; - format_str[size + 1] = 0; - EXPECT_THROW_MSG((void)fmt::format(runtime(format_str), 0.0), format_error, - "number is too big"); - - safe_sprintf(format_str, "{0:.%u", INT_MAX + 1u); - EXPECT_THROW_MSG((void)fmt::format(runtime(format_str), 0.0), format_error, - "number is too big"); - safe_sprintf(format_str, "{0:.%u}", INT_MAX + 1u); - EXPECT_THROW_MSG((void)fmt::format(runtime(format_str), 0.0), format_error, - "number is too big"); - - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:."), 0.0), format_error, - "invalid precision"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.}"), 0.0), format_error, - "invalid format string"); - - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.2"), 0), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.2}"), 42), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.2f}"), 42), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.2}"), 42u), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.2f}"), 42u), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.2}"), 42l), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.2f}"), 42l), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.2}"), 42ul), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.2f}"), 42ul), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.2}"), 42ll), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.2f}"), 42ll), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.2}"), 42ull), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.2f}"), 42ull), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:3.0}"), 'x'), format_error, - "invalid format specifier"); - EXPECT_EQ(fmt::format("{0:.2}", 1.2345), "1.2"); - EXPECT_EQ(fmt::format("{0:.2}", 1.2345l), "1.2"); - EXPECT_EQ(fmt::format("{:.2}", 1.234e56), "1.2e+56"); - EXPECT_EQ(fmt::format("{0:.3}", 1.1), "1.1"); - EXPECT_EQ(fmt::format("{:.0e}", 1.0L), "1e+00"); - EXPECT_EQ(fmt::format("{:9.1e}", 0.0), " 0.0e+00"); - EXPECT_EQ(fmt::format("{:.7f}", 0.0000000000000071054273576010018587L), - "0.0000000"); - - EXPECT_EQ( - fmt::format("{:.494}", 4.9406564584124654E-324), - "4.9406564584124654417656879286822137236505980261432476442558568250067550" - "727020875186529983636163599237979656469544571773092665671035593979639877" - "479601078187812630071319031140452784581716784898210368871863605699873072" - "305000638740915356498438731247339727316961514003171538539807412623856559" - "117102665855668676818703956031062493194527159149245532930545654440112748" - "012970999954193198940908041656332452475714786901472678015935523861155013" - "480352649347201937902681071074917033322268447533357208324319361e-324"); - EXPECT_EQ( - fmt::format("{:.1074f}", 1.1125369292536e-308), - "0.0000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000111253692925360019747947051741965785554081512200979" - "355021686109411883779182127659725163430929750364498219730822952552570601" - "152163505899912777129583674906301179059298598412303893909188340988729019" - "014361467448914817838555156840459458527907308695109202499990850735085304" - "478476991912072201449236975063640913461919914396877093174125167509869762" - "482369631100360266123742648159508919592746619553246586039571522788247697" - "156360766271842991667238355464496455107749716934387136380536472531224398" - "559833794807213172371254492216255558078524900147957309382830827524104234" - "530961756787819847850302379672357738807808384667004752163416921762619527" - "462847642037420991432005657440259928195996762610375541867198059294212446" - "81962777939941034720757232455434770912461317493580281734466552734375"); - - std::string outputs[] = { - "-0X1.41FE3FFE71C9E000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000P+127", - "-0XA.0FF1FFF38E4F0000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000000000000000000000000" - "000000000000000000000000000000000000000000000000000P+124"}; - EXPECT_THAT(outputs, - testing::Contains(fmt::format("{:.838A}", -2.14001164E+38))); - - if (std::numeric_limits<long double>::digits == 64) { - auto ld = (std::numeric_limits<long double>::min)(); - EXPECT_EQ(fmt::format("{:.0}", ld), "3e-4932"); - EXPECT_EQ( - fmt::format("{:0g}", std::numeric_limits<long double>::denorm_min()), - "3.6452e-4951"); - } - - EXPECT_EQ(fmt::format("{:#.0f}", 123.0), "123."); - EXPECT_EQ(fmt::format("{:.02f}", 1.234), "1.23"); - EXPECT_EQ(fmt::format("{:.1g}", 0.001), "0.001"); - EXPECT_EQ(fmt::format("{}", 123456789.0f), "1.2345679e+08"); - EXPECT_EQ(fmt::format("{}", 1019666432.0f), "1.0196664e+09"); - EXPECT_EQ(fmt::format("{:.0e}", 9.5), "1e+01"); - EXPECT_EQ(fmt::format("{:.1e}", 1e-34), "1.0e-34"); - - EXPECT_THROW_MSG( - (void)fmt::format(runtime("{0:.2}"), reinterpret_cast<void*>(0xcafe)), - format_error, "invalid format specifier"); - EXPECT_THROW_MSG( - (void)fmt::format(runtime("{0:.2f}"), reinterpret_cast<void*>(0xcafe)), - format_error, "invalid format specifier"); - EXPECT_THROW_MSG( - (void)fmt::format("{:.2147483646f}", -2.2121295195081227E+304), - format_error, "number is too big"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{:.f}"), 42.0), format_error, - "invalid format string"); - - EXPECT_EQ(fmt::format("{0:.2}", "str"), "st"); - EXPECT_EQ(fmt::format("{0:.5}", "вожыкі"), "вожык"); - EXPECT_EQ(fmt::format("{0:.6}", "123456\xad"), "123456"); -} - -TEST(format_test, large_precision) { - // Iterator used to abort the actual output. - struct throwing_iterator { - auto operator=(char) -> throwing_iterator& { - throw std::runtime_error("aborted"); - return *this; - } - auto operator*() -> throwing_iterator& { return *this; } - auto operator++() -> throwing_iterator& { return *this; } - auto operator++(int) -> throwing_iterator { return *this; } - }; - auto it = throwing_iterator(); - - EXPECT_THROW_MSG(fmt::format_to(it, fmt::runtime("{:#.{}}"), 1.0, - fmt::detail::max_value<int>()), - std::runtime_error, "aborted"); - - EXPECT_THROW_MSG(fmt::format_to(it, fmt::runtime("{:#.{}e}"), 1.0, - fmt::detail::max_value<int>() - 1), - std::runtime_error, "aborted"); - - EXPECT_THROW_MSG((void)fmt::format(fmt::runtime("{:.{}e}"), 42.0, - fmt::detail::max_value<int>()), - format_error, "number is too big"); -} - -TEST(format_test, utf8_precision) { - auto result = fmt::format("{:.4}", "caf\u00e9s"); // cafés - EXPECT_EQ(result, "caf\u00e9"); -} - -TEST(format_test, runtime_precision) { - char format_str[buffer_size]; - safe_sprintf(format_str, "{0:.{%u", UINT_MAX); - increment(format_str + 5); - EXPECT_THROW_MSG((void)fmt::format(runtime(format_str), 0.0), format_error, - "invalid format string"); - size_t size = std::strlen(format_str); - format_str[size] = '}'; - format_str[size + 1] = 0; - EXPECT_THROW_MSG((void)fmt::format(runtime(format_str), 0.0), format_error, - "argument not found"); - format_str[size + 1] = '}'; - format_str[size + 2] = 0; - EXPECT_THROW_MSG((void)fmt::format(runtime(format_str), 0.0), format_error, - "argument not found"); - - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{"), 0.0), format_error, - "invalid format string"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{}"), 0.0), format_error, - "cannot switch from manual to automatic argument indexing"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{?}}"), 0.0), format_error, - "invalid format string"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}"), 0, 0), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}}"), 0.0), format_error, - "argument not found"); - - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{0:}}"), 0.0), format_error, - "invalid format string"); - - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}}"), 0.0, -1), - format_error, "width/precision is out of range"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}}"), 0.0, (INT_MAX + 1u)), - format_error, bad_dynamic_spec_msg); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}}"), 0.0, -1l), - format_error, bad_dynamic_spec_msg); - if (fmt::detail::const_check(sizeof(long) > sizeof(int))) { - long value = INT_MAX; - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}}"), 0.0, (value + 1)), - format_error, bad_dynamic_spec_msg); - } - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}}"), 0.0, (INT_MAX + 1ul)), - format_error, bad_dynamic_spec_msg); - - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}}"), 0.0, '0'), - format_error, "width/precision is not integer"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}}"), 0.0, 0.0), - format_error, "width/precision is not integer"); - - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}}"), 42, 2), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}f}"), 42, 2), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}}"), 42u, 2), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}f}"), 42u, 2), - format_error, "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}}"), 42l, 2), format_error, - "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}f}"), 42l, 2), - format_error, "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}}"), 42ul, 2), - format_error, "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}f}"), 42ul, 2), - format_error, "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}}"), 42ll, 2), - format_error, "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}f}"), 42ll, 2), - format_error, "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}}"), 42ull, 2), - format_error, "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}f}"), 42ull, 2), - format_error, "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:3.{1}}"), 'x', 0), - format_error, "invalid format specifier"); - EXPECT_EQ(fmt::format("{0:.{1}}", 1.2345, 2), "1.2"); - EXPECT_EQ(fmt::format("{1:.{0}}", 2, 1.2345l), "1.2"); - - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}}"), - reinterpret_cast<void*>(0xcafe), 2), - format_error, "invalid format specifier"); - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:.{1}f}"), - reinterpret_cast<void*>(0xcafe), 2), - format_error, "invalid format specifier"); - - EXPECT_EQ(fmt::format("{0:.{1}}", "str", 2), "st"); -} - -TEST(format_test, format_bool) { - EXPECT_EQ(fmt::format("{}", true), "true"); - EXPECT_EQ(fmt::format("{}", false), "false"); - EXPECT_EQ(fmt::format("{:d}", true), "1"); - EXPECT_EQ(fmt::format("{:5}", true), "true "); - EXPECT_EQ(fmt::format("{:s}", true), "true"); - EXPECT_EQ(fmt::format("{:s}", false), "false"); - EXPECT_EQ(fmt::format("{:6s}", false), "false "); - EXPECT_THROW_MSG((void)fmt::format(runtime("{:c}"), false), format_error, - "invalid format specifier"); -} - -TEST(format_test, format_short) { - short s = 42; - EXPECT_EQ(fmt::format("{0:d}", s), "42"); - unsigned short us = 42; - EXPECT_EQ(fmt::format("{0:d}", us), "42"); -} - -template <typename T> -void check_unknown_types(const T& value, const char* types, const char*) { - char format_str[buffer_size]; - const char* special = ".0123456789L?}"; - for (int i = CHAR_MIN; i <= CHAR_MAX; ++i) { - char c = static_cast<char>(i); - if (std::strchr(types, c) || std::strchr(special, c) || !c) continue; - safe_sprintf(format_str, "{0:10%c}", c); - const char* message = "invalid format specifier"; - EXPECT_THROW_MSG((void)fmt::format(runtime(format_str), value), - format_error, message) - << format_str << " " << message; - } -} - -TEST(format_test, format_int) { - EXPECT_THROW_MSG((void)fmt::format(runtime("{0:v"), 42), format_error, - "invalid format specifier"); - check_unknown_types(42, "bBdoxXnLc", "integer"); - EXPECT_EQ(fmt::format("{:c}", static_cast<int>('x')), "x"); -} - -TEST(format_test, format_bin) { - EXPECT_EQ(fmt::format("{0:b}", 0), "0"); - EXPECT_EQ(fmt::format("{0:b}", 42), "101010"); - EXPECT_EQ(fmt::format("{0:b}", 42u), "101010"); - EXPECT_EQ(fmt::format("{0:b}", -42), "-101010"); - EXPECT_EQ(fmt::format("{0:b}", 12345), "11000000111001"); - EXPECT_EQ(fmt::format("{0:b}", 0x12345678), "10010001101000101011001111000"); - EXPECT_EQ("10010000101010111100110111101111", - fmt::format("{0:b}", 0x90ABCDEF)); - EXPECT_EQ("11111111111111111111111111111111", - fmt::format("{0:b}", max_value<uint32_t>())); -} - -#if FMT_USE_INT128 -constexpr auto int128_max = static_cast<__int128_t>( - (static_cast<__uint128_t>(1) << ((__SIZEOF_INT128__ * CHAR_BIT) - 1)) - 1); -constexpr auto int128_min = -int128_max - 1; - -constexpr auto uint128_max = ~static_cast<__uint128_t>(0); -#endif - -TEST(format_test, format_dec) { - EXPECT_EQ(fmt::format("{0}", 0), "0"); - EXPECT_EQ(fmt::format("{0}", 42), "42"); - EXPECT_EQ(fmt::format("{:}>", 42), "42>"); - EXPECT_EQ(fmt::format("{0:d}", 42), "42"); - EXPECT_EQ(fmt::format("{0}", 42u), "42"); - EXPECT_EQ(fmt::format("{0}", -42), "-42"); - EXPECT_EQ(fmt::format("{0}", 12345), "12345"); - EXPECT_EQ(fmt::format("{0}", 67890), "67890"); -#if FMT_USE_INT128 - EXPECT_EQ(fmt::format("{0}", static_cast<__int128_t>(0)), "0"); - EXPECT_EQ(fmt::format("{0}", static_cast<__uint128_t>(0)), "0"); - EXPECT_EQ("9223372036854775808", - fmt::format("{0}", static_cast<__int128_t>(INT64_MAX) + 1)); - EXPECT_EQ("-9223372036854775809", - fmt::format("{0}", static_cast<__int128_t>(INT64_MIN) - 1)); - EXPECT_EQ("18446744073709551616", - fmt::format("{0}", static_cast<__int128_t>(UINT64_MAX) + 1)); - EXPECT_EQ("170141183460469231731687303715884105727", - fmt::format("{0}", int128_max)); - EXPECT_EQ("-170141183460469231731687303715884105728", - fmt::format("{0}", int128_min)); - EXPECT_EQ("340282366920938463463374607431768211455", - fmt::format("{0}", uint128_max)); -#endif - - char buffer[buffer_size]; - safe_sprintf(buffer, "%d", INT_MIN); - EXPECT_EQ(buffer, fmt::format("{0}", INT_MIN)); - safe_sprintf(buffer, "%d", INT_MAX); - EXPECT_EQ(buffer, fmt::format("{0}", INT_MAX)); - safe_sprintf(buffer, "%u", UINT_MAX); - EXPECT_EQ(buffer, fmt::format("{0}", UINT_MAX)); - safe_sprintf(buffer, "%ld", 0 - static_cast<unsigned long>(LONG_MIN)); - EXPECT_EQ(buffer, fmt::format("{0}", LONG_MIN)); - safe_sprintf(buffer, "%ld", LONG_MAX); - EXPECT_EQ(buffer, fmt::format("{0}", LONG_MAX)); - safe_sprintf(buffer, "%lu", ULONG_MAX); - EXPECT_EQ(buffer, fmt::format("{0}", ULONG_MAX)); -} - -TEST(format_test, format_hex) { - EXPECT_EQ(fmt::format("{0:x}", 0), "0"); - EXPECT_EQ(fmt::format("{0:x}", 0x42), "42"); - EXPECT_EQ(fmt::format("{0:x}", 0x42u), "42"); - EXPECT_EQ(fmt::format("{0:x}", -0x42), "-42"); - EXPECT_EQ(fmt::format("{0:x}", 0x12345678), "12345678"); - EXPECT_EQ(fmt::format("{0:x}", 0x90abcdef), "90abcdef"); - EXPECT_EQ(fmt::format("{0:X}", 0x12345678), "12345678"); - EXPECT_EQ(fmt::format("{0:X}", 0x90ABCDEF), "90ABCDEF"); -#if FMT_USE_INT128 - EXPECT_EQ(fmt::format("{0:x}", static_cast<__int128_t>(0)), "0"); - EXPECT_EQ(fmt::format("{0:x}", static_cast<__uint128_t>(0)), "0"); - EXPECT_EQ("8000000000000000", - fmt::format("{0:x}", static_cast<__int128_t>(INT64_MAX) + 1)); - EXPECT_EQ("-8000000000000001", - fmt::format("{0:x}", static_cast<__int128_t>(INT64_MIN) - 1)); - EXPECT_EQ("10000000000000000", - fmt::format("{0:x}", static_cast<__int128_t>(UINT64_MAX) + 1)); - EXPECT_EQ("7fffffffffffffffffffffffffffffff", - fmt::format("{0:x}", int128_max)); - EXPECT_EQ("-80000000000000000000000000000000", - fmt::format("{0:x}", int128_min)); - EXPECT_EQ("ffffffffffffffffffffffffffffffff", - fmt::format("{0:x}", uint128_max)); -#endif - - char buffer[buffer_size]; - safe_sprintf(buffer, "-%x", 0 - static_cast<unsigned>(INT_MIN)); - EXPECT_EQ(buffer, fmt::format("{0:x}", INT_MIN)); - safe_sprintf(buffer, "%x", INT_MAX); - EXPECT_EQ(buffer, fmt::format("{0:x}", INT_MAX)); - safe_sprintf(buffer, "%x", UINT_MAX); - EXPECT_EQ(buffer, fmt::format("{0:x}", UINT_MAX)); - safe_sprintf(buffer, "-%lx", 0 - static_cast<unsigned long>(LONG_MIN)); - EXPECT_EQ(buffer, fmt::format("{0:x}", LONG_MIN)); - safe_sprintf(buffer, "%lx", LONG_MAX); - EXPECT_EQ(buffer, fmt::format("{0:x}", LONG_MAX)); - safe_sprintf(buffer, "%lx", ULONG_MAX); - EXPECT_EQ(buffer, fmt::format("{0:x}", ULONG_MAX)); -} - -TEST(format_test, format_oct) { - EXPECT_EQ(fmt::format("{0:o}", 0), "0"); - EXPECT_EQ(fmt::format("{0:o}", 042), "42"); - EXPECT_EQ(fmt::format("{0:o}", 042u), "42"); - EXPECT_EQ(fmt::format("{0:o}", -042), "-42"); - EXPECT_EQ(fmt::format("{0:o}", 012345670), "12345670"); -#if FMT_USE_INT128 - EXPECT_EQ(fmt::format("{0:o}", static_cast<__int128_t>(0)), "0"); - EXPECT_EQ(fmt::format("{0:o}", static_cast<__uint128_t>(0)), "0"); - EXPECT_EQ("1000000000000000000000", - fmt::format("{0:o}", static_cast<__int128_t>(INT64_MAX) + 1)); - EXPECT_EQ("-1000000000000000000001", - fmt::format("{0:o}", static_cast<__int128_t>(INT64_MIN) - 1)); - EXPECT_EQ("2000000000000000000000", - fmt::format("{0:o}", static_cast<__int128_t>(UINT64_MAX) + 1)); - EXPECT_EQ("1777777777777777777777777777777777777777777", - fmt::format("{0:o}", int128_max)); - EXPECT_EQ("-2000000000000000000000000000000000000000000", - fmt::format("{0:o}", int128_min)); - EXPECT_EQ("3777777777777777777777777777777777777777777", - fmt::format("{0:o}", uint128_max)); -#endif - - char buffer[buffer_size]; - safe_sprintf(buffer, "-%o", 0 - static_cast<unsigned>(INT_MIN)); - EXPECT_EQ(buffer, fmt::format("{0:o}", INT_MIN)); - safe_sprintf(buffer, "%o", INT_MAX); - EXPECT_EQ(buffer, fmt::format("{0:o}", INT_MAX)); - safe_sprintf(buffer, "%o", UINT_MAX); - EXPECT_EQ(buffer, fmt::format("{0:o}", UINT_MAX)); - safe_sprintf(buffer, "-%lo", 0 - static_cast<unsigned long>(LONG_MIN)); - EXPECT_EQ(buffer, fmt::format("{0:o}", LONG_MIN)); - safe_sprintf(buffer, "%lo", LONG_MAX); - EXPECT_EQ(buffer, fmt::format("{0:o}", LONG_MAX)); - safe_sprintf(buffer, "%lo", ULONG_MAX); - EXPECT_EQ(buffer, fmt::format("{0:o}", ULONG_MAX)); -} - -TEST(format_test, format_int_locale) { - EXPECT_EQ(fmt::format("{:L}", 1234), "1234"); -} - -TEST(format_test, format_float) { - EXPECT_EQ(fmt::format("{}", 0.0f), "0"); - EXPECT_EQ(fmt::format("{0:f}", 392.5f), "392.500000"); -} - -TEST(format_test, format_double) { - EXPECT_EQ(fmt::format("{}", 0.0), "0"); - check_unknown_types(1.2, "eEfFgGaAnL%", "double"); - EXPECT_EQ(fmt::format("{:}", 0.0), "0"); - EXPECT_EQ(fmt::format("{:f}", 0.0), "0.000000"); - EXPECT_EQ(fmt::format("{:g}", 0.0), "0"); - EXPECT_EQ(fmt::format("{:}", 392.65), "392.65"); - EXPECT_EQ(fmt::format("{:g}", 392.65), "392.65"); - EXPECT_EQ(fmt::format("{:G}", 392.65), "392.65"); - EXPECT_EQ(fmt::format("{:g}", 4.9014e6), "4.9014e+06"); - EXPECT_EQ(fmt::format("{:f}", 392.65), "392.650000"); - EXPECT_EQ(fmt::format("{:F}", 392.65), "392.650000"); - EXPECT_EQ(fmt::format("{:L}", 42.0), "42"); - EXPECT_EQ(fmt::format("{:24a}", 4.2f), " 0x1.0cccccp+2"); - EXPECT_EQ(fmt::format("{:24a}", 4.2), " 0x1.0cccccccccccdp+2"); - EXPECT_EQ(fmt::format("{:<24a}", 4.2), "0x1.0cccccccccccdp+2 "); - EXPECT_EQ(fmt::format("{0:e}", 392.65), "3.926500e+02"); - EXPECT_EQ(fmt::format("{0:E}", 392.65), "3.926500E+02"); - EXPECT_EQ(fmt::format("{0:+010.4g}", 392.65), "+0000392.6"); - -#if FMT_CPLUSPLUS >= 201703L - double xd = 0x1.ffffffffffp+2; - EXPECT_EQ(fmt::format("{:.10a}", xd), "0x1.ffffffffffp+2"); - EXPECT_EQ(fmt::format("{:.9a}", xd), "0x2.000000000p+2"); - - if (std::numeric_limits<long double>::digits == 64) { - auto ld = 0xf.ffffffffffp-3l; - EXPECT_EQ(fmt::format("{:a}", ld), "0xf.ffffffffffp-3"); - EXPECT_EQ(fmt::format("{:.10a}", ld), "0xf.ffffffffffp-3"); - EXPECT_EQ(fmt::format("{:.9a}", ld), "0x1.000000000p+1"); - } -#endif - - if (fmt::detail::const_check(std::numeric_limits<double>::is_iec559)) { - double d = (std::numeric_limits<double>::min)(); - EXPECT_EQ(fmt::format("{:a}", d), "0x1p-1022"); - EXPECT_EQ(fmt::format("{:#a}", d), "0x1.p-1022"); - - d = (std::numeric_limits<double>::max)(); - EXPECT_EQ(fmt::format("{:a}", d), "0x1.fffffffffffffp+1023"); - - d = std::numeric_limits<double>::denorm_min(); - EXPECT_EQ(fmt::format("{:a}", d), "0x0.0000000000001p-1022"); - } - - if (std::numeric_limits<long double>::digits == 64) { - auto ld = (std::numeric_limits<long double>::min)(); - EXPECT_EQ(fmt::format("{:a}", ld), "0x8p-16385"); - - ld = (std::numeric_limits<long double>::max)(); - EXPECT_EQ(fmt::format("{:a}", ld), "0xf.fffffffffffffffp+16380"); - - ld = std::numeric_limits<long double>::denorm_min(); - EXPECT_EQ(fmt::format("{:a}", ld), "0x0.000000000000001p-16382"); - } - - EXPECT_EQ(fmt::format("{:.10a}", 4.2), "0x1.0ccccccccdp+2"); - - EXPECT_EQ(fmt::format("{:a}", -42.0), "-0x1.5p+5"); - EXPECT_EQ(fmt::format("{:A}", -42.0), "-0X1.5P+5"); - - EXPECT_EQ(fmt::format("{:f}", 9223372036854775807.0), - "9223372036854775808.000000"); -} - -TEST(format_test, precision_rounding) { - EXPECT_EQ(fmt::format("{:.0f}", 0.0), "0"); - EXPECT_EQ(fmt::format("{:.0f}", 0.01), "0"); - EXPECT_EQ(fmt::format("{:.0f}", 0.1), "0"); - EXPECT_EQ(fmt::format("{:.3f}", 0.00049), "0.000"); - EXPECT_EQ(fmt::format("{:.3f}", 0.0005), "0.001"); - EXPECT_EQ(fmt::format("{:.3f}", 0.00149), "0.001"); - EXPECT_EQ(fmt::format("{:.3f}", 0.0015), "0.002"); - EXPECT_EQ(fmt::format("{:.3f}", 0.9999), "1.000"); - EXPECT_EQ(fmt::format("{:.3}", 0.00123), "0.00123"); - EXPECT_EQ(fmt::format("{:.16g}", 0.1), "0.1"); - EXPECT_EQ(fmt::format("{:.0}", 1.0), "1"); - EXPECT_EQ("225.51575035152063720", - fmt::format("{:.17f}", 225.51575035152064)); - EXPECT_EQ(fmt::format("{:.1f}", -761519619559038.2), "-761519619559038.2"); - EXPECT_EQ("1.9156918820264798e-56", - fmt::format("{}", 1.9156918820264798e-56)); - EXPECT_EQ(fmt::format("{:.4f}", 7.2809479766055470e-15), "0.0000"); -} - -TEST(format_test, prettify_float) { - EXPECT_EQ(fmt::format("{}", 1e-4), "0.0001"); - EXPECT_EQ(fmt::format("{}", 1e-5), "1e-05"); - EXPECT_EQ(fmt::format("{}", 1e15), "1000000000000000"); - EXPECT_EQ(fmt::format("{}", 1e16), "1e+16"); - EXPECT_EQ(fmt::format("{}", 9.999e-5), "9.999e-05"); - EXPECT_EQ(fmt::format("{}", 1e10), "10000000000"); - EXPECT_EQ(fmt::format("{}", 1e11), "100000000000"); - EXPECT_EQ(fmt::format("{}", 1234e7), "12340000000"); - EXPECT_EQ(fmt::format("{}", 1234e-2), "12.34"); - EXPECT_EQ(fmt::format("{}", 1234e-6), "0.001234"); - EXPECT_EQ(fmt::format("{}", 0.1f), "0.1"); - EXPECT_EQ(fmt::format("{}", 1.35631564e-19f), "1.3563156e-19"); -} - -TEST(format_test, format_nan) { - double nan = std::numeric_limits<double>::quiet_NaN(); - EXPECT_EQ(fmt::format("{}", nan), "nan"); - EXPECT_EQ(fmt::format("{:+}", nan), "+nan"); - EXPECT_EQ(fmt::format("{:+06}", nan), " +nan"); - EXPECT_EQ(fmt::format("{:<+06}", nan), "+nan "); - EXPECT_EQ(fmt::format("{:^+06}", nan), " +nan "); - EXPECT_EQ(fmt::format("{:>+06}", nan), " +nan"); - if (std::signbit(-nan)) { - EXPECT_EQ(fmt::format("{}", -nan), "-nan"); - EXPECT_EQ(fmt::format("{:+06}", -nan), " -nan"); - } else { - fmt::print("Warning: compiler doesn't handle negative NaN correctly"); - } - EXPECT_EQ(fmt::format("{: }", nan), " nan"); - EXPECT_EQ(fmt::format("{:F}", nan), "NAN"); - EXPECT_EQ(fmt::format("{:<7}", nan), "nan "); - EXPECT_EQ(fmt::format("{:^7}", nan), " nan "); - EXPECT_EQ(fmt::format("{:>7}", nan), " nan"); -} - -TEST(format_test, format_infinity) { - double inf = std::numeric_limits<double>::infinity(); - EXPECT_EQ(fmt::format("{}", inf), "inf"); - EXPECT_EQ(fmt::format("{:+}", inf), "+inf"); - EXPECT_EQ(fmt::format("{}", -inf), "-inf"); - EXPECT_EQ(fmt::format("{:+06}", inf), " +inf"); - EXPECT_EQ(fmt::format("{:+06}", -inf), " -inf"); - EXPECT_EQ(fmt::format("{:<+06}", inf), "+inf "); - EXPECT_EQ(fmt::format("{:^+06}", inf), " +inf "); - EXPECT_EQ(fmt::format("{:>+06}", inf), " +inf"); - EXPECT_EQ(fmt::format("{: }", inf), " inf"); - EXPECT_EQ(fmt::format("{:F}", inf), "INF"); - EXPECT_EQ(fmt::format("{:<7}", inf), "inf "); - EXPECT_EQ(fmt::format("{:^7}", inf), " inf "); - EXPECT_EQ(fmt::format("{:>7}", inf), " inf"); -} - -TEST(format_test, format_long_double) { - EXPECT_EQ(fmt::format("{0:}", 0.0l), "0"); - EXPECT_EQ(fmt::format("{0:f}", 0.0l), "0.000000"); - EXPECT_EQ(fmt::format("{:.1f}", 0.000000001l), "0.0"); - EXPECT_EQ(fmt::format("{:.2f}", 0.099l), "0.10"); - EXPECT_EQ(fmt::format("{0:}", 392.65l), "392.65"); - EXPECT_EQ(fmt::format("{0:g}", 392.65l), "392.65"); - EXPECT_EQ(fmt::format("{0:G}", 392.65l), "392.65"); - EXPECT_EQ(fmt::format("{0:f}", 392.65l), "392.650000"); - EXPECT_EQ(fmt::format("{0:F}", 392.65l), "392.650000"); - char buffer[buffer_size]; - safe_sprintf(buffer, "%Le", 392.65l); - EXPECT_EQ(buffer, fmt::format("{0:e}", 392.65l)); - EXPECT_EQ(fmt::format("{0:+010.4g}", 392.64l), "+0000392.6"); - - auto ld = 3.31l; - if (fmt::detail::is_double_double<decltype(ld)>::value) { - safe_sprintf(buffer, "%a", static_cast<double>(ld)); - EXPECT_EQ(buffer, fmt::format("{:a}", ld)); - } else if (std::numeric_limits<long double>::digits == 64) { - EXPECT_EQ(fmt::format("{:a}", ld), "0xd.3d70a3d70a3d70ap-2"); - } -} - -TEST(format_test, format_char) { - const char types[] = "cbBdoxX"; - check_unknown_types('a', types, "char"); - EXPECT_EQ(fmt::format("{0}", 'a'), "a"); - EXPECT_EQ(fmt::format("{0:c}", 'z'), "z"); - int n = 'x'; - for (const char* type = types + 1; *type; ++type) { - std::string format_str = fmt::format("{{:{}}}", *type); - EXPECT_EQ(fmt::format(runtime(format_str), n), - fmt::format(runtime(format_str), 'x')) - << format_str; - } - EXPECT_EQ(fmt::format("{:02X}", n), fmt::format("{:02X}", 'x')); - - EXPECT_EQ(fmt::format("{}", '\n'), "\n"); - EXPECT_EQ(fmt::format("{:?}", '\n'), "'\\n'"); - EXPECT_EQ(fmt::format("{:x}", '\xff'), "ff"); -} - -TEST(format_test, format_volatile_char) { - volatile char c = 'x'; - EXPECT_EQ(fmt::format("{}", c), "x"); -} - -TEST(format_test, format_unsigned_char) { - EXPECT_EQ(fmt::format("{}", static_cast<unsigned char>(42)), "42"); - EXPECT_EQ(fmt::format("{}", static_cast<uint8_t>(42)), "42"); -} - -TEST(format_test, format_cstring) { - check_unknown_types("test", "sp", "string"); - EXPECT_EQ(fmt::format("{0}", "test"), "test"); - EXPECT_EQ(fmt::format("{0:s}", "test"), "test"); - char nonconst[] = "nonconst"; - EXPECT_EQ(fmt::format("{0}", nonconst), "nonconst"); - auto nullstr = static_cast<const char*>(nullptr); - EXPECT_THROW_MSG((void)fmt::format("{}", nullstr), format_error, - "string pointer is null"); - EXPECT_THROW_MSG((void)fmt::format("{:s}", nullstr), format_error, - "string pointer is null"); -} - -void function_pointer_test(int, double, std::string) {} - -TEST(format_test, format_pointer) { - check_unknown_types(reinterpret_cast<void*>(0x1234), "p", "pointer"); - EXPECT_EQ(fmt::format("{0}", static_cast<void*>(nullptr)), "0x0"); - EXPECT_EQ(fmt::format("{0}", reinterpret_cast<void*>(0x1234)), "0x1234"); - EXPECT_EQ(fmt::format("{0:p}", reinterpret_cast<void*>(0x1234)), "0x1234"); - // On CHERI (or other fat-pointer) systems, the size of a pointer is greater - // than the size an integer that can hold a virtual address. There is no - // portable address-as-an-integer type (yet) in C++, so we use `size_t` as - // the closest equivalent for now. - EXPECT_EQ("0x" + std::string(sizeof(size_t) * CHAR_BIT / 4, 'f'), - fmt::format("{0}", reinterpret_cast<void*>(~uintptr_t()))); - EXPECT_EQ("0x1234", - fmt::format("{}", fmt::ptr(reinterpret_cast<int*>(0x1234)))); - EXPECT_EQ(fmt::format("{}", fmt::detail::bit_cast<const void*>( - &function_pointer_test)), - fmt::format("{}", fmt::ptr(function_pointer_test))); - EXPECT_EQ(fmt::format("{}", nullptr), "0x0"); -} - -TEST(format_test, write_uintptr_fallback) { - // Test that formatting a pointer by converting it to uint128_fallback works. - // This is needed to support systems without uintptr_t. - auto s = std::string(); - fmt::detail::write_ptr<char>( - std::back_inserter(s), - fmt::detail::bit_cast<fmt::detail::uint128_fallback>( - reinterpret_cast<void*>(0xface)), - nullptr); - EXPECT_EQ(s, "0xface"); -} - -enum class color { red, green, blue }; - -namespace test_ns { -enum class color { red, green, blue }; -using fmt::enums::format_as; -} // namespace test_ns - -TEST(format_test, format_enum_class) { - EXPECT_EQ(fmt::format("{}", fmt::underlying(color::red)), "0"); - EXPECT_EQ(fmt::format("{}", test_ns::color::red), "0"); -} - -TEST(format_test, format_string) { - EXPECT_EQ(fmt::format("{0}", std::string("test")), "test"); - EXPECT_EQ(fmt::format("{0}", std::string("test")), "test"); - EXPECT_EQ(fmt::format("{:?}", std::string("test")), "\"test\""); - EXPECT_EQ(fmt::format("{:*^10?}", std::string("test")), "**\"test\"**"); - EXPECT_EQ(fmt::format("{:?}", std::string("\test")), "\"\\test\""); - EXPECT_THROW((void)fmt::format(fmt::runtime("{:x}"), std::string("test")), - fmt::format_error); -} - -TEST(format_test, format_string_view) { - EXPECT_EQ(fmt::format("{}", string_view("test")), "test"); - EXPECT_EQ(fmt::format("{:?}", string_view("t\nst")), "\"t\\nst\""); - EXPECT_EQ(fmt::format("{}", string_view()), ""); -} - -#ifdef FMT_USE_STRING_VIEW -struct string_viewable {}; - -FMT_BEGIN_NAMESPACE -template <> struct formatter<string_viewable> : formatter<std::string_view> { - auto format(string_viewable, format_context& ctx) const - -> decltype(ctx.out()) { - return formatter<std::string_view>::format("foo", ctx); - } -}; -FMT_END_NAMESPACE - -TEST(format_test, format_std_string_view) { - EXPECT_EQ(fmt::format("{}", std::string_view("test")), "test"); - EXPECT_EQ(fmt::format("{}", string_viewable()), "foo"); -} - -struct explicitly_convertible_to_std_string_view { - explicit operator std::string_view() const { return "foo"; } -}; - -template <> -struct fmt::formatter<explicitly_convertible_to_std_string_view> - : formatter<std::string_view> { - auto format(explicitly_convertible_to_std_string_view v, - format_context& ctx) const -> decltype(ctx.out()) { - return fmt::format_to(ctx.out(), "'{}'", std::string_view(v)); - } -}; - -TEST(format_test, format_explicitly_convertible_to_std_string_view) { - EXPECT_EQ("'foo'", - fmt::format("{}", explicitly_convertible_to_std_string_view())); -} - -struct convertible_to_std_string_view { - operator std::string_view() const noexcept { return "Hi there"; } -}; -FMT_BEGIN_NAMESPACE -template <> -class formatter<convertible_to_std_string_view> - : public formatter<std::string_view> {}; -FMT_END_NAMESPACE - -TEST(format_test, format_implicitly_convertible_and_inherits_string_view) { - static_assert(fmt::is_formattable<convertible_to_std_string_view>{}, ""); - EXPECT_EQ("Hi there", fmt::format("{}", convertible_to_std_string_view{})); -} -#endif - -class Answer {}; - -FMT_BEGIN_NAMESPACE -template <> struct formatter<date> { - template <typename ParseContext> - FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { - auto it = ctx.begin(); - if (it != ctx.end() && *it == 'd') ++it; - return it; - } - - auto format(const date& d, format_context& ctx) const -> decltype(ctx.out()) { - // Namespace-qualify to avoid ambiguity with std::format_to. - fmt::format_to(ctx.out(), "{}-{}-{}", d.year(), d.month(), d.day()); - return ctx.out(); - } -}; - -template <> struct formatter<Answer> : formatter<int> { - template <typename FormatContext> - auto format(Answer, FormatContext& ctx) const -> decltype(ctx.out()) { - return formatter<int>::format(42, ctx); - } -}; -FMT_END_NAMESPACE - -TEST(format_test, format_custom) { - EXPECT_THROW_MSG((void)fmt::format(runtime("{:s}"), date(2012, 12, 9)), - format_error, "unknown format specifier"); - EXPECT_EQ(fmt::format("{0}", Answer()), "42"); - EXPECT_EQ(fmt::format("{:04}", Answer()), "0042"); -} - -TEST(format_test, format_to_custom) { - char buf[10] = {}; - auto end = fmt::format_to(buf, "{}", Answer()); - EXPECT_EQ(end, buf + 2); - EXPECT_STREQ(buf, "42"); -} - -TEST(format_test, format_string_from_speed_test) { - EXPECT_EQ("1.2340000000:0042:+3.13:str:0x3e8:X:%", - fmt::format("{0:0.10f}:{1:04}:{2:+g}:{3}:{4}:{5}:%", 1.234, 42, - 3.13, "str", reinterpret_cast<void*>(1000), 'X')); -} - -TEST(format_test, format_examples) { - std::string message = fmt::format("The answer is {}", 42); - EXPECT_EQ("The answer is 42", message); - - EXPECT_EQ(fmt::format("{}", 42), "42"); - - memory_buffer out; - fmt::format_to(std::back_inserter(out), "The answer is {}.", 42); - EXPECT_EQ("The answer is 42.", to_string(out)); - - EXPECT_THROW( - { - const char* filename = "madeup"; - FILE* file = fopen(filename, "r"); - if (!file) - throw fmt::system_error(errno, "cannot open file '{}'", filename); - fclose(file); - }, - std::system_error); - - EXPECT_EQ("First, thou shalt count to three", - fmt::format("First, thou shalt count to {0}", "three")); - EXPECT_EQ(fmt::format("Bring me a {}", "shrubbery"), "Bring me a shrubbery"); - EXPECT_EQ(fmt::format("From {} to {}", 1, 3), "From 1 to 3"); - - char buffer[buffer_size]; - safe_sprintf(buffer, "%03.2f", -1.2); - EXPECT_EQ(buffer, fmt::format("{:03.2f}", -1.2)); - - EXPECT_EQ(fmt::format("{0}, {1}, {2}", 'a', 'b', 'c'), "a, b, c"); - EXPECT_EQ(fmt::format("{}, {}, {}", 'a', 'b', 'c'), "a, b, c"); - EXPECT_EQ(fmt::format("{2}, {1}, {0}", 'a', 'b', 'c'), "c, b, a"); - EXPECT_EQ(fmt::format("{0}{1}{0}", "abra", "cad"), "abracadabra"); - - EXPECT_EQ("left aligned ", - fmt::format("{:<30}", "left aligned")); - EXPECT_EQ(" right aligned", - fmt::format("{:>30}", "right aligned")); - EXPECT_EQ(" centered ", - fmt::format("{:^30}", "centered")); - EXPECT_EQ("***********centered***********", - fmt::format("{:*^30}", "centered")); - - EXPECT_EQ(fmt::format("{:+f}; {:+f}", 3.14, -3.14), "+3.140000; -3.140000"); - EXPECT_EQ(fmt::format("{: f}; {: f}", 3.14, -3.14), " 3.140000; -3.140000"); - EXPECT_EQ(fmt::format("{:-f}; {:-f}", 3.14, -3.14), "3.140000; -3.140000"); - - EXPECT_EQ("int: 42; hex: 2a; oct: 52", - fmt::format("int: {0:d}; hex: {0:x}; oct: {0:o}", 42)); - EXPECT_EQ("int: 42; hex: 0x2a; oct: 052", - fmt::format("int: {0:d}; hex: {0:#x}; oct: {0:#o}", 42)); - - EXPECT_EQ(fmt::format("The answer is {}", 42), "The answer is 42"); - EXPECT_THROW_MSG( - (void)fmt::format(runtime("The answer is {:d}"), "forty-two"), - format_error, "invalid format specifier"); - - EXPECT_WRITE( - stdout, fmt::print("{}", std::numeric_limits<double>::infinity()), "inf"); -} - -TEST(format_test, print) { - EXPECT_WRITE(stdout, fmt::print("Don't {}!", "panic"), "Don't panic!"); - EXPECT_WRITE(stderr, fmt::print(stderr, "Don't {}!", "panic"), - "Don't panic!"); - EXPECT_WRITE(stdout, fmt::println("Don't {}!", "panic"), "Don't panic!\n"); - EXPECT_WRITE(stderr, fmt::println(stderr, "Don't {}!", "panic"), - "Don't panic!\n"); -} - -TEST(format_test, big_print) { - enum { count = 5000 }; - auto big_print = []() { - for (int i = 0; i < count / 5; ++i) fmt::print("xxxxx"); - }; - EXPECT_WRITE(stdout, big_print(), std::string(count, 'x')); -} - -struct deadlockable { - int value = 0; - mutable std::mutex mutex; -}; - -FMT_BEGIN_NAMESPACE -template <> struct formatter<deadlockable> { - FMT_CONSTEXPR auto parse(format_parse_context& ctx) -> decltype(ctx.begin()) { - return ctx.begin(); - } - - auto format(const deadlockable& d, format_context& ctx) const - -> decltype(ctx.out()) { - std::lock_guard<std::mutex> lock(d.mutex); - return format_to(ctx.out(), "{}", d.value); - } -}; -FMT_END_NAMESPACE - -TEST(format_test, locking_formatter) { - auto f = fmt::buffered_file(); - try { - f = fmt::buffered_file("/dev/null", "w"); - } catch (const std::system_error&) { - fmt::print(stderr, "warning: /dev/null is not supported\n"); - return; - } - deadlockable d; - auto t = std::thread([&]() { - fmt::print(f.get(), "start t\n"); - std::lock_guard<std::mutex> lock(d.mutex); - for (int i = 0; i < 1000000; ++i) d.value += 10; - fmt::print(f.get(), "done\n"); - }); - for (int i = 0; i < 100; ++i) fmt::print(f.get(), "{}", d); - t.join(); -} - -TEST(format_test, variadic) { - EXPECT_EQ(fmt::format("{}c{}", "ab", 1), "abc1"); -} - -TEST(format_test, bytes) { - auto s = fmt::format("{:10}", fmt::bytes("ёжик")); - EXPECT_EQ("ёжик ", s); - EXPECT_EQ(10, s.size()); -} - -TEST(format_test, group_digits_view) { - EXPECT_EQ(fmt::format("{}", fmt::group_digits(10000000)), "10,000,000"); - EXPECT_EQ(fmt::format("{:8}", fmt::group_digits(1000)), " 1,000"); - EXPECT_EQ(fmt::format("{}", fmt::group_digits(-10000000)), "-10,000,000"); - EXPECT_EQ(fmt::format("{:8}", fmt::group_digits(-1000)), " -1,000"); - EXPECT_EQ(fmt::format("{:8}", fmt::group_digits(-100)), " -100"); -} - -#ifdef __cpp_generic_lambdas -struct point { - double x, y; -}; - -FMT_BEGIN_NAMESPACE -template <> struct formatter<point> : nested_formatter<double> { - auto format(point p, format_context& ctx) const -> decltype(ctx.out()) { - return write_padded(ctx, [this, p](auto out) -> decltype(out) { - return fmt::format_to(out, "({}, {})", this->nested(p.x), - this->nested(p.y)); - }); - } -}; -FMT_END_NAMESPACE - -TEST(format_test, nested_formatter) { - EXPECT_EQ(fmt::format("{:>16.2f}", point{1, 2}), " (1.00, 2.00)"); -} -#endif // __cpp_generic_lambdas - -enum test_enum { foo, bar }; -auto format_as(test_enum e) -> int { return e; } - -std::string vformat_message(int id, const char* format, fmt::format_args args) { - auto buffer = fmt::memory_buffer(); - fmt::format_to(fmt::appender(buffer), "[{}] ", id); - vformat_to(fmt::appender(buffer), format, args); - return to_string(buffer); -} - -template <typename... Args> -std::string format_message(int id, const char* format, const Args&... args) { - auto va = fmt::make_format_args(args...); - return vformat_message(id, format, va); -} - -TEST(format_test, format_message_example) { - EXPECT_EQ("[42] something happened", - format_message(42, "{} happened", "something")); -} - -template <typename... Args> -void print_error(const char* file, int line, const char* format, - const Args&... args) { - fmt::print("{}: {}: ", file, line); - fmt::print(format, args...); -} - -TEST(format_test, unpacked_args) { - EXPECT_EQ("0123456789abcdefg", - fmt::format("{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}{}", 0, 1, 2, 3, 4, 5, - 6, 7, 8, 9, 'a', 'b', 'c', 'd', 'e', 'f', 'g')); -} - -constexpr char with_null[3] = {'{', '}', '\0'}; -constexpr char no_null[2] = {'{', '}'}; -static constexpr char static_with_null[3] = {'{', '}', '\0'}; -static constexpr char static_no_null[2] = {'{', '}'}; - -TEST(format_test, compile_time_string) { - EXPECT_EQ(fmt::format(FMT_STRING("foo")), "foo"); - EXPECT_EQ(fmt::format(FMT_STRING("{}"), 42), "42"); - -#if FMT_USE_NONTYPE_TEMPLATE_ARGS - using namespace fmt::literals; - EXPECT_EQ("foobar", fmt::format(FMT_STRING("{foo}{bar}"), "bar"_a = "bar", - "foo"_a = "foo")); - EXPECT_EQ(fmt::format(FMT_STRING("")), ""); - EXPECT_EQ(fmt::format(FMT_STRING(""), "arg"_a = 42), ""); - EXPECT_EQ(fmt::format(FMT_STRING("{answer}"), "answer"_a = Answer()), "42"); - EXPECT_EQ(fmt::format(FMT_STRING("{} {two}"), 1, "two"_a = 2), "1 2"); -#endif - - (void)static_with_null; - (void)static_no_null; -#ifndef _MSC_VER - EXPECT_EQ(fmt::format(FMT_STRING(static_with_null), 42), "42"); - EXPECT_EQ(fmt::format(FMT_STRING(static_no_null), 42), "42"); -#endif - - (void)with_null; - (void)no_null; -#if FMT_CPLUSPLUS >= 201703L - EXPECT_EQ(fmt::format(FMT_STRING(with_null), 42), "42"); - EXPECT_EQ(fmt::format(FMT_STRING(no_null), 42), "42"); -#endif -#if defined(FMT_USE_STRING_VIEW) && FMT_CPLUSPLUS >= 201703L - EXPECT_EQ(fmt::format(FMT_STRING(std::string_view("{}")), 42), "42"); -#endif -} - -TEST(format_test, custom_format_compile_time_string) { - EXPECT_EQ(fmt::format(FMT_STRING("{}"), Answer()), "42"); - auto answer = Answer(); - EXPECT_EQ(fmt::format(FMT_STRING("{}"), answer), "42"); - char buf[10] = {}; - fmt::format_to(buf, FMT_STRING("{}"), answer); - const Answer const_answer = Answer(); - EXPECT_EQ(fmt::format(FMT_STRING("{}"), const_answer), "42"); -} - -TEST(format_test, named_arg_udl) { - using namespace fmt::literals; - auto udl_a = fmt::format("{first}{second}{first}{third}", "first"_a = "abra", - "second"_a = "cad", "third"_a = 99); - EXPECT_EQ( - fmt::format("{first}{second}{first}{third}", fmt::arg("first", "abra"), - fmt::arg("second", "cad"), fmt::arg("third", 99)), - udl_a); - - EXPECT_EQ(fmt::format("{answer}", "answer"_a = Answer()), "42"); -} - -TEST(format_test, enum) { EXPECT_EQ(fmt::format("{}", foo), "0"); } - -TEST(format_test, formatter_not_specialized) { - static_assert(!fmt::is_formattable<fmt::formatter<test_enum>, - fmt::format_context>::value, - ""); -} - -#if FMT_HAS_FEATURE(cxx_strong_enums) -enum big_enum : unsigned long long { big_enum_value = 5000000000ULL }; -auto format_as(big_enum e) -> unsigned long long { return e; } - -TEST(format_test, strong_enum) { - auto arg = fmt::basic_format_arg<fmt::context>(big_enum_value); - EXPECT_EQ(arg.type(), fmt::detail::type::ulong_long_type); - EXPECT_EQ(fmt::format("{}", big_enum_value), "5000000000"); -} -#endif - -TEST(format_test, non_null_terminated_format_string) { - EXPECT_EQ(fmt::format(string_view("{}foo", 2), 42), "42"); -} - -namespace adl_test { -namespace fmt { -namespace detail { -struct foo {}; -template <typename, typename OutputIt> void write(OutputIt, foo) = delete; -} // namespace detail -} // namespace fmt -} // namespace adl_test - -FMT_BEGIN_NAMESPACE -template <> -struct formatter<adl_test::fmt::detail::foo> : formatter<std::string> { - auto format(adl_test::fmt::detail::foo, format_context& ctx) const - -> decltype(ctx.out()) { - return formatter<std::string>::format("foo", ctx); - } -}; -FMT_END_NAMESPACE - -TEST(format_test, to_string) { - EXPECT_EQ(fmt::to_string(42), "42"); - EXPECT_EQ(fmt::to_string(reinterpret_cast<void*>(0x1234)), "0x1234"); - EXPECT_EQ(fmt::to_string(adl_test::fmt::detail::foo()), "foo"); - EXPECT_EQ(fmt::to_string(foo), "0"); - -#if FMT_USE_FLOAT128 - EXPECT_EQ(fmt::to_string(__float128(0.5)), "0.5"); -#endif - -#if defined(FMT_USE_STRING_VIEW) && FMT_CPLUSPLUS >= 201703L - EXPECT_EQ(fmt::to_string(std::string_view()), ""); -#endif -} - -TEST(format_test, output_iterators) { - std::list<char> out; - fmt::format_to(std::back_inserter(out), "{}", 42); - EXPECT_EQ("42", std::string(out.begin(), out.end())); - std::stringstream s; - fmt::format_to(std::ostream_iterator<char>(s), "{}", 42); - EXPECT_EQ("42", s.str()); - - std::stringstream s2; - fmt::format_to(std::ostreambuf_iterator<char>(s2), "{}.{:06d}", 42, 43); - EXPECT_EQ("42.000043", s2.str()); -} - -TEST(format_test, fill_via_appender) { - fmt::memory_buffer buf; - auto it = fmt::appender(buf); - std::fill_n(it, 3, '~'); - EXPECT_EQ(fmt::to_string(buf), "~~~"); -} - -TEST(format_test, formatted_size) { - EXPECT_EQ(2u, fmt::formatted_size("{}", 42)); - EXPECT_EQ(2u, fmt::formatted_size(std::locale(), "{}", 42)); -} - -TEST(format_test, format_to_no_args) { - std::string s; - fmt::format_to(std::back_inserter(s), "test"); - EXPECT_EQ("test", s); -} - -TEST(format_test, format_to) { - std::string s; - fmt::format_to(std::back_inserter(s), "part{0}", 1); - EXPECT_EQ("part1", s); - fmt::format_to(std::back_inserter(s), "part{0}", 2); - EXPECT_EQ("part1part2", s); -} - -TEST(format_test, format_to_memory_buffer) { - auto buf = fmt::basic_memory_buffer<char, 100>(); - fmt::format_to(fmt::appender(buf), "{}", "foo"); - EXPECT_EQ("foo", to_string(buf)); -} - -TEST(format_test, format_to_vector) { - std::vector<char> v; - fmt::format_to(std::back_inserter(v), "{}", "foo"); - EXPECT_EQ(string_view(v.data(), v.size()), "foo"); -} - -struct nongrowing_container { - using value_type = char; - void push_back(char) { throw std::runtime_error("can't take it any more"); } -}; - -TEST(format_test, format_to_propagates_exceptions) { - auto c = nongrowing_container(); - EXPECT_THROW(fmt::format_to(std::back_inserter(c), "{}", 42), - std::runtime_error); -} - -TEST(format_test, format_to_n) { - char buffer[4]; - buffer[3] = 'x'; - auto result = fmt::format_to_n(buffer, 3, "{}", 12345); - EXPECT_EQ(5u, result.size); - EXPECT_EQ(buffer + 3, result.out); - EXPECT_EQ("123x", fmt::string_view(buffer, 4)); - - result = fmt::format_to_n(buffer, 3, "{:s}", "foobar"); - EXPECT_EQ(6u, result.size); - EXPECT_EQ(buffer + 3, result.out); - EXPECT_EQ("foox", fmt::string_view(buffer, 4)); - - buffer[0] = 'x'; - buffer[1] = 'x'; - buffer[2] = 'x'; - result = fmt::format_to_n(buffer, 3, "{}", 'A'); - EXPECT_EQ(1u, result.size); - EXPECT_EQ(buffer + 1, result.out); - EXPECT_EQ("Axxx", fmt::string_view(buffer, 4)); - - result = fmt::format_to_n(buffer, 3, "{}{} ", 'B', 'C'); - EXPECT_EQ(3u, result.size); - EXPECT_EQ(buffer + 3, result.out); - EXPECT_EQ("BC x", fmt::string_view(buffer, 4)); - - result = fmt::format_to_n(buffer, 4, "{}", "ABCDE"); - EXPECT_EQ(5u, result.size); - EXPECT_EQ("ABCD", fmt::string_view(buffer, 4)); - - buffer[3] = 'x'; - result = fmt::format_to_n(buffer, 3, "{}", std::string(1000, '*')); - EXPECT_EQ(1000u, result.size); - EXPECT_EQ("***x", fmt::string_view(buffer, 4)); -} - -struct test_output_iterator { - char* data; - - using iterator_category = std::output_iterator_tag; - using value_type = void; - using difference_type = void; - using pointer = void; - using reference = void; - - auto operator++() -> test_output_iterator& { - ++data; - return *this; - } - auto operator++(int) -> test_output_iterator { - auto tmp = *this; - ++data; - return tmp; - } - auto operator*() -> char& { return *data; } -}; - -TEST(format_test, format_to_n_output_iterator) { - char buf[10] = {}; - fmt::format_to_n(test_output_iterator{buf}, 10, "{}", 42); - EXPECT_STREQ(buf, "42"); -} - -TEST(format_test, vformat_to) { - using context = fmt::format_context; - int n = 42; - auto args = fmt::make_format_args<context>(n); - auto s = std::string(); - fmt::vformat_to(std::back_inserter(s), "{}", args); - EXPECT_EQ(s, "42"); - s.clear(); - fmt::vformat_to(std::back_inserter(s), "{}", args); - EXPECT_EQ(s, "42"); -} - -TEST(format_test, char_traits_not_ambiguous) { - // Test that we don't inject detail names into the std namespace. - using namespace std; - auto c = char_traits<char>::char_type(); - (void)c; -#if FMT_CPLUSPLUS >= 201103L - auto s = std::string(); - auto lval = begin(s); - (void)lval; -#endif -} - -struct check_back_appender {}; - -FMT_BEGIN_NAMESPACE -template <> struct formatter<check_back_appender> { - FMT_CONSTEXPR auto parse(format_parse_context& ctx) -> decltype(ctx.begin()) { - return ctx.begin(); - } - - template <typename Context> - auto format(check_back_appender, Context& ctx) const -> decltype(ctx.out()) { - auto out = ctx.out(); - static_assert(std::is_same<decltype(++out), decltype(out)&>::value, - "needs to satisfy weakly_incrementable"); - *out = 'y'; - return ++out; - } -}; -FMT_END_NAMESPACE - -TEST(format_test, back_insert_slicing) { - EXPECT_EQ(fmt::format("{}", check_back_appender{}), "y"); -} - -namespace test { -enum class scoped_enum_as_int {}; -auto format_as(scoped_enum_as_int) -> int { return 42; } - -enum class scoped_enum_as_string_view {}; -auto format_as(scoped_enum_as_string_view) -> fmt::string_view { return "foo"; } - -enum class scoped_enum_as_string {}; -auto format_as(scoped_enum_as_string) -> std::string { return "foo"; } - -struct struct_as_int {}; -auto format_as(struct_as_int) -> int { return 42; } - -struct struct_as_const_reference { - const std::string name = "foo"; -}; -auto format_as(const struct_as_const_reference& s) -> const std::string& { - return s.name; -} -} // namespace test - -TEST(format_test, format_as) { - EXPECT_EQ(fmt::format("{}", test::scoped_enum_as_int()), "42"); - EXPECT_EQ(fmt::format("{}", test::scoped_enum_as_string_view()), "foo"); - EXPECT_EQ(fmt::format("{}", test::scoped_enum_as_string()), "foo"); - EXPECT_EQ(fmt::format("{}", test::struct_as_int()), "42"); - EXPECT_EQ(fmt::format("{}", test::struct_as_const_reference()), "foo"); -} - -TEST(format_test, format_as_to_string) { - EXPECT_EQ(fmt::to_string(test::scoped_enum_as_int()), "42"); - EXPECT_EQ(fmt::to_string(test::scoped_enum_as_string_view()), "foo"); - EXPECT_EQ(fmt::to_string(test::scoped_enum_as_string()), "foo"); - EXPECT_EQ(fmt::to_string(test::struct_as_int()), "42"); -} - -template <typename Char, typename T> auto check_enabled_formatter() -> bool { - static_assert(std::is_default_constructible<fmt::formatter<T, Char>>::value, - ""); - return true; -} - -template <typename Char, typename... T> void check_enabled_formatters() { - auto dummy = {check_enabled_formatter<Char, T>()...}; - (void)dummy; -} - -TEST(format_test, test_formatters_enabled) { - using custom_string = - std::basic_string<char, std::char_traits<char>, mock_allocator<char>>; - using custom_wstring = std::basic_string<wchar_t, std::char_traits<wchar_t>, - mock_allocator<wchar_t>>; - - check_enabled_formatters<char, bool, char, signed char, unsigned char, short, - unsigned short, int, unsigned, long, unsigned long, - long long, unsigned long long, float, double, - long double, void*, const void*, char*, const char*, - std::string, custom_string, std::nullptr_t>(); - check_enabled_formatters< - wchar_t, bool, wchar_t, signed char, unsigned char, short, unsigned short, - int, unsigned, long, unsigned long, long long, unsigned long long, float, - double, long double, void*, const void*, wchar_t*, const wchar_t*, - std::wstring, custom_wstring, std::nullptr_t>(); -} - -TEST(format_int_test, data) { - fmt::format_int format_int(42); - EXPECT_EQ(std::string(format_int.data(), format_int.size()), "42"); -} - -TEST(format_int_test, format_int) { - EXPECT_EQ(fmt::format_int(42).str(), "42"); - EXPECT_EQ(fmt::format_int(42).size(), 2u); - EXPECT_EQ(fmt::format_int(-42).str(), "-42"); - EXPECT_EQ(fmt::format_int(-42).size(), 3u); - EXPECT_EQ(fmt::format_int(42ul).str(), "42"); - EXPECT_EQ(fmt::format_int(-42l).str(), "-42"); - EXPECT_EQ(fmt::format_int(42ull).str(), "42"); - EXPECT_EQ(fmt::format_int(-42ll).str(), "-42"); - EXPECT_EQ(fmt::format_int(max_value<int64_t>()).str(), - std::to_string(max_value<int64_t>())); -} - -#ifndef FMT_STATIC_THOUSANDS_SEPARATOR - -# include <locale> - -class format_facet : public fmt::format_facet<std::locale> { - protected: - struct int_formatter { - fmt::appender out; - - template <typename T, FMT_ENABLE_IF(fmt::detail::is_integer<T>::value)> - auto operator()(T value) -> bool { - fmt::format_to(out, "[{}]", value); - return true; - } - - template <typename T, FMT_ENABLE_IF(!fmt::detail::is_integer<T>::value)> - auto operator()(T) -> bool { - return false; - } - }; - - auto do_put(fmt::appender out, fmt::loc_value val, - const fmt::format_specs&) const -> bool override; -}; - -auto format_facet::do_put(fmt::appender out, fmt::loc_value val, - const fmt::format_specs&) const -> bool { - return val.visit(int_formatter{out}); -} - -TEST(format_test, format_facet) { - auto loc = std::locale(std::locale(), new format_facet()); - EXPECT_EQ(fmt::format(loc, "{:L}", 42), "[42]"); - EXPECT_EQ(fmt::format(loc, "{:L}", -42), "[-42]"); -} - -TEST(format_test, format_facet_separator) { - // U+2019 RIGHT SINGLE QUOTATION MARK is a digit separator in the de_CH - // locale. - auto loc = - std::locale({}, new fmt::format_facet<std::locale>("\xe2\x80\x99")); - EXPECT_EQ(fmt::format(loc, "{:L}", 1000), - "1\xe2\x80\x99" - "000"); -} - -TEST(format_test, format_facet_grouping) { - auto loc = - std::locale({}, new fmt::format_facet<std::locale>(",", {1, 2, 3})); - EXPECT_EQ(fmt::format(loc, "{:L}", 1234567890), "1,234,567,89,0"); -} - -TEST(format_test, format_named_arg_with_locale) { - EXPECT_EQ(fmt::format(std::locale(), "{answer}", fmt::arg("answer", 42)), - "42"); -} - -TEST(format_test, format_locale) { - auto loc = std::locale({}, new fmt::format_facet<std::locale>(",")); - EXPECT_EQ(fmt::format(loc, "{:Lx}", 123456789), "7,5bc,d15"); - EXPECT_EQ(fmt::format(loc, "{:#Lb}", -123456789), - "-0b111,010,110,111,100,110,100,010,101"); - EXPECT_EQ(fmt::format(loc, "{:10Lo}", 12345), " 30,071"); -} - -#endif // FMT_STATIC_THOUSANDS_SEPARATOR - -struct convertible_to_nonconst_cstring { - operator char*() const { - static char c[] = "bar"; - return c; - } -}; - -FMT_BEGIN_NAMESPACE -template <> -struct formatter<convertible_to_nonconst_cstring> : formatter<char*> {}; -FMT_END_NAMESPACE - -TEST(format_test, formatter_nonconst_char) { - EXPECT_EQ(fmt::format("{}", convertible_to_nonconst_cstring()), "bar"); -} - -namespace adl_test { -template <typename... T> void make_format_args(const T&...) = delete; - -struct string : std::string {}; -auto format_as(const string& s) -> std::string { return s; } -} // namespace adl_test - -// Test that formatting functions compile when make_format_args is found by ADL. -TEST(format_test, adl) { - // Only check compilation and don't run the code to avoid polluting the output - // and since the output is tested elsewhere. - if (fmt::detail::const_check(true)) return; - auto s = adl_test::string(); - char buf[10]; - (void)fmt::format("{}", s); - fmt::format_to(buf, "{}", s); - fmt::format_to_n(buf, 10, "{}", s); - (void)fmt::formatted_size("{}", s); - fmt::print("{}", s); - fmt::print(stdout, "{}", s); -} - -struct convertible_to_int { - operator int() const { return 42; } -}; - -struct convertible_to_cstring { - operator const char*() const { return "foo"; } -}; - -FMT_BEGIN_NAMESPACE -template <> struct formatter<convertible_to_int> { - FMT_CONSTEXPR auto parse(format_parse_context& ctx) -> decltype(ctx.begin()) { - return ctx.begin(); - } - auto format(convertible_to_int, format_context& ctx) const - -> decltype(ctx.out()) { - auto out = ctx.out(); - *out++ = 'x'; - return out; - } -}; - -template <> struct formatter<convertible_to_cstring> { - FMT_CONSTEXPR auto parse(format_parse_context& ctx) -> decltype(ctx.begin()) { - return ctx.begin(); - } - auto format(convertible_to_cstring, format_context& ctx) const - -> decltype(ctx.out()) { - auto out = ctx.out(); - *out++ = 'y'; - return out; - } -}; -FMT_END_NAMESPACE - -TEST(format_test, formatter_overrides_implicit_conversion) { - EXPECT_EQ(fmt::format("{}", convertible_to_int()), "x"); - EXPECT_EQ(fmt::format("{}", convertible_to_cstring()), "y"); -} - -struct ustring { - using value_type = unsigned; - - auto find_first_of(value_type, size_t) const -> size_t; - - auto data() const -> const char*; - auto size() const -> size_t; -}; - -FMT_BEGIN_NAMESPACE -template <> struct formatter<ustring> : formatter<std::string> { - auto format(const ustring&, format_context& ctx) const - -> decltype(ctx.out()) { - return formatter<std::string>::format("ustring", ctx); - } -}; -FMT_END_NAMESPACE - -TEST(format_test, ustring) { - EXPECT_EQ(fmt::format("{}", ustring()), "ustring"); -} - -TEST(format_test, writer) { - auto write_to_stdout = []() { - auto w = fmt::writer(stdout); - w.print("{}", 42); - }; - EXPECT_WRITE(stdout, write_to_stdout(), "42"); - -#if FMT_USE_FCNTL - auto pipe = fmt::pipe(); - auto write_end = pipe.write_end.fdopen("w"); - fmt::writer(write_end.get()).print("42"); - write_end.close(); - auto read_end = pipe.read_end.fdopen("r"); - int n = 0; - int result = fscanf(read_end.get(), "%d", &n); - (void)result; - EXPECT_EQ(n, 42); -#endif - - auto s = fmt::string_buffer(); - fmt::writer(s).print("foo"); - EXPECT_EQ(s.str(), "foo"); -} - -#if FMT_USE_FCNTL && !defined(_WIN32) -TEST(format_test, invalid_glibc_buffer) { - auto pipe = fmt::pipe(); - auto write_end = pipe.write_end.fdopen("w"); - auto file = write_end.get(); - - // This results in _IO_write_ptr < _IO_write_end. - fprintf(file, "111\n"); - setvbuf(file, nullptr, _IOLBF, 0); - - fmt::print(file, "------\n"); -} -#endif // FMT_USE_FCNTL - -#if FMT_USE_BITINT -FMT_PRAGMA_CLANG(diagnostic ignored "-Wbit-int-extension") - -TEST(format_test, bitint) { - using fmt::detail::bitint; - using fmt::detail::ubitint; - - EXPECT_EQ(fmt::format("{}", ubitint<3>(7)), "7"); - EXPECT_EQ(fmt::format("{}", bitint<7>()), "0"); - - EXPECT_EQ(fmt::format("{}", ubitint<15>(31000)), "31000"); - EXPECT_EQ(fmt::format("{}", bitint<16>(INT16_MIN)), "-32768"); - EXPECT_EQ(fmt::format("{}", bitint<16>(INT16_MAX)), "32767"); - - EXPECT_EQ(fmt::format("{}", ubitint<32>(4294967295)), "4294967295"); - - EXPECT_EQ(fmt::format("{}", ubitint<47>(140737488355327ULL)), - "140737488355327"); - EXPECT_EQ(fmt::format("{}", bitint<47>(-40737488355327LL)), - "-40737488355327"); - - // Check lvalues and const - auto a = bitint<8>(0); - auto b = ubitint<32>(4294967295); - const auto c = bitint<7>(0); - const auto d = ubitint<32>(4294967295); - EXPECT_EQ(fmt::format("{}", a), "0"); - EXPECT_EQ(fmt::format("{}", b), "4294967295"); - EXPECT_EQ(fmt::format("{}", c), "0"); - EXPECT_EQ(fmt::format("{}", d), "4294967295"); - - static_assert(fmt::is_formattable<bitint<64>, char>{}, ""); - static_assert(fmt::is_formattable<ubitint<64>, char>{}, ""); -} -#endif - -#ifdef __cpp_lib_byte -TEST(base_test, format_byte) { - auto s = std::string(); - fmt::format_to(std::back_inserter(s), "{}", std::byte(42)); - EXPECT_EQ(s, "42"); -} -#endif - -// Only defined after the test case. -struct incomplete_type; -extern const incomplete_type& external_instance; - -FMT_BEGIN_NAMESPACE -template <> struct formatter<incomplete_type> : formatter<int> { - auto format(const incomplete_type& x, context& ctx) const -> appender; -}; -FMT_END_NAMESPACE - -TEST(incomplete_type_test, format) { - EXPECT_EQ(fmt::format("{}", external_instance), "42"); -} - -struct incomplete_type {}; -const incomplete_type& external_instance = {}; - -auto fmt::formatter<incomplete_type>::format(const incomplete_type&, - fmt::context& ctx) const - -> fmt::appender { - return formatter<int>::format(42, ctx); -} |