| // Formatting library for C++ - formatting library implementation tests |
| // |
| // Copyright (c) 2012 - present, Victor Zverovich |
| // All rights reserved. |
| // |
| // For the license information refer to format.h. |
| |
| #define FMT_NOEXCEPT |
| #undef FMT_SHARED |
| #include "test-assert.h" |
| |
| // Include format.cc instead of format.h to test implementation. |
| #include <algorithm> |
| #include <cstring> |
| |
| #include "../src/format.cc" |
| #include "fmt/printf.h" |
| #include "gmock.h" |
| #include "gtest-extra.h" |
| #include "util.h" |
| |
| #ifdef _WIN32 |
| # include <windows.h> |
| # undef max |
| #endif |
| |
| using fmt::detail::bigint; |
| using fmt::detail::fp; |
| using fmt::detail::max_value; |
| |
| static_assert(!std::is_copy_constructible<bigint>::value, ""); |
| static_assert(!std::is_copy_assignable<bigint>::value, ""); |
| |
| TEST(BigIntTest, Construct) { |
| EXPECT_EQ("", fmt::format("{}", bigint())); |
| EXPECT_EQ("42", fmt::format("{}", bigint(0x42))); |
| EXPECT_EQ("123456789abcedf0", fmt::format("{}", bigint(0x123456789abcedf0))); |
| } |
| |
| TEST(BigIntTest, Compare) { |
| bigint n1(42); |
| bigint n2(42); |
| EXPECT_EQ(compare(n1, n2), 0); |
| n2 <<= 32; |
| EXPECT_LT(compare(n1, n2), 0); |
| bigint n3(43); |
| EXPECT_LT(compare(n1, n3), 0); |
| EXPECT_GT(compare(n3, n1), 0); |
| bigint n4(42 * 0x100000001); |
| EXPECT_LT(compare(n2, n4), 0); |
| EXPECT_GT(compare(n4, n2), 0); |
| } |
| |
| TEST(BigIntTest, AddCompare) { |
| EXPECT_LT( |
| add_compare(bigint(0xffffffff), bigint(0xffffffff), bigint(1) <<= 64), 0); |
| EXPECT_LT(add_compare(bigint(1) <<= 32, bigint(1), bigint(1) <<= 96), 0); |
| EXPECT_GT(add_compare(bigint(1) <<= 32, bigint(0), bigint(0xffffffff)), 0); |
| EXPECT_GT(add_compare(bigint(0), bigint(1) <<= 32, bigint(0xffffffff)), 0); |
| EXPECT_GT(add_compare(bigint(42), bigint(1), bigint(42)), 0); |
| EXPECT_GT(add_compare(bigint(0xffffffff), bigint(1), bigint(0xffffffff)), 0); |
| EXPECT_LT(add_compare(bigint(10), bigint(10), bigint(22)), 0); |
| EXPECT_LT(add_compare(bigint(0x100000010), bigint(0x100000010), |
| bigint(0x300000010)), |
| 0); |
| EXPECT_GT(add_compare(bigint(0x1ffffffff), bigint(0x100000002), |
| bigint(0x300000000)), |
| 0); |
| EXPECT_EQ(add_compare(bigint(0x1ffffffff), bigint(0x100000002), |
| bigint(0x300000001)), |
| 0); |
| EXPECT_LT(add_compare(bigint(0x1ffffffff), bigint(0x100000002), |
| bigint(0x300000002)), |
| 0); |
| EXPECT_LT(add_compare(bigint(0x1ffffffff), bigint(0x100000002), |
| bigint(0x300000003)), |
| 0); |
| } |
| |
| TEST(BigIntTest, ShiftLeft) { |
| bigint n(0x42); |
| n <<= 0; |
| EXPECT_EQ("42", fmt::format("{}", n)); |
| n <<= 1; |
| EXPECT_EQ("84", fmt::format("{}", n)); |
| n <<= 25; |
| EXPECT_EQ("108000000", fmt::format("{}", n)); |
| } |
| |
| TEST(BigIntTest, Multiply) { |
| bigint n(0x42); |
| EXPECT_THROW(n *= 0, assertion_failure); |
| n *= 1; |
| EXPECT_EQ("42", fmt::format("{}", n)); |
| n *= 2; |
| EXPECT_EQ("84", fmt::format("{}", n)); |
| n *= 0x12345678; |
| EXPECT_EQ("962fc95e0", fmt::format("{}", n)); |
| bigint bigmax(max_value<uint32_t>()); |
| bigmax *= max_value<uint32_t>(); |
| EXPECT_EQ("fffffffe00000001", fmt::format("{}", bigmax)); |
| bigmax.assign(max_value<uint64_t>()); |
| bigmax *= max_value<uint64_t>(); |
| EXPECT_EQ("fffffffffffffffe0000000000000001", fmt::format("{}", bigmax)); |
| } |
| |
| TEST(BigIntTest, Accumulator) { |
| fmt::detail::accumulator acc; |
| EXPECT_EQ(acc.lower, 0); |
| EXPECT_EQ(acc.upper, 0); |
| acc.upper = 12; |
| acc.lower = 34; |
| EXPECT_EQ(static_cast<uint32_t>(acc), 34); |
| acc += 56; |
| EXPECT_EQ(acc.lower, 90); |
| acc += fmt::detail::max_value<uint64_t>(); |
| EXPECT_EQ(acc.upper, 13); |
| EXPECT_EQ(acc.lower, 89); |
| acc >>= 32; |
| EXPECT_EQ(acc.upper, 0); |
| EXPECT_EQ(acc.lower, 13 * 0x100000000); |
| } |
| |
| TEST(BigIntTest, Square) { |
| bigint n0(0); |
| n0.square(); |
| EXPECT_EQ("0", fmt::format("{}", n0)); |
| bigint n1(0x100); |
| n1.square(); |
| EXPECT_EQ("10000", fmt::format("{}", n1)); |
| bigint n2(0xfffffffff); |
| n2.square(); |
| EXPECT_EQ("ffffffffe000000001", fmt::format("{}", n2)); |
| bigint n3(max_value<uint64_t>()); |
| n3.square(); |
| EXPECT_EQ("fffffffffffffffe0000000000000001", fmt::format("{}", n3)); |
| bigint n4; |
| n4.assign_pow10(10); |
| EXPECT_EQ("2540be400", fmt::format("{}", n4)); |
| } |
| |
| TEST(BigIntTest, DivModAssignZeroDivisor) { |
| bigint zero(0); |
| EXPECT_THROW(bigint(0).divmod_assign(zero), assertion_failure); |
| EXPECT_THROW(bigint(42).divmod_assign(zero), assertion_failure); |
| } |
| |
| TEST(BigIntTest, DivModAssignSelf) { |
| bigint n(100); |
| EXPECT_THROW(n.divmod_assign(n), assertion_failure); |
| } |
| |
| TEST(BigIntTest, DivModAssignUnaligned) { |
| // (42 << 340) / pow(10, 100): |
| bigint n1(42); |
| n1 <<= 340; |
| bigint n2; |
| n2.assign_pow10(100); |
| int result = n1.divmod_assign(n2); |
| EXPECT_EQ(result, 9406); |
| EXPECT_EQ("10f8353019583bfc29ffc8f564e1b9f9d819dbb4cf783e4507eca1539220p96", |
| fmt::format("{}", n1)); |
| } |
| |
| TEST(BigIntTest, DivModAssign) { |
| // 100 / 10: |
| bigint n1(100); |
| int result = n1.divmod_assign(bigint(10)); |
| EXPECT_EQ(result, 10); |
| EXPECT_EQ("0", fmt::format("{}", n1)); |
| // pow(10, 100) / (42 << 320): |
| n1.assign_pow10(100); |
| result = n1.divmod_assign(bigint(42) <<= 320); |
| EXPECT_EQ(result, 111); |
| EXPECT_EQ("13ad2594c37ceb0b2784c4ce0bf38ace408e211a7caab24308a82e8f10p96", |
| fmt::format("{}", n1)); |
| // 42 / 100: |
| bigint n2(42); |
| n1.assign_pow10(2); |
| result = n2.divmod_assign(n1); |
| EXPECT_EQ(result, 0); |
| EXPECT_EQ("2a", fmt::format("{}", n2)); |
| } |
| |
| template <bool is_iec559> void run_double_tests() { |
| fmt::print("warning: double is not IEC559, skipping FP tests\n"); |
| } |
| |
| template <> void run_double_tests<true>() { |
| // Construct from double. |
| EXPECT_EQ(fp(1.23), fp(0x13ae147ae147aeu, -52)); |
| } |
| |
| TEST(FPTest, DoubleTests) { |
| run_double_tests<std::numeric_limits<double>::is_iec559>(); |
| } |
| |
| TEST(FPTest, Normalize) { |
| const auto v = fp(0xbeef, 42); |
| auto normalized = normalize(v); |
| EXPECT_EQ(0xbeef000000000000, normalized.f); |
| EXPECT_EQ(-6, normalized.e); |
| } |
| |
| TEST(FPTest, Multiply) { |
| auto v = fp(123ULL << 32, 4) * fp(56ULL << 32, 7); |
| EXPECT_EQ(v.f, 123u * 56u); |
| EXPECT_EQ(v.e, 4 + 7 + 64); |
| v = fp(123ULL << 32, 4) * fp(567ULL << 31, 8); |
| EXPECT_EQ(v.f, (123 * 567 + 1u) / 2); |
| EXPECT_EQ(v.e, 4 + 8 + 64); |
| } |
| |
| TEST(FPTest, GetCachedPower) { |
| using limits = std::numeric_limits<double>; |
| for (auto exp = limits::min_exponent; exp <= limits::max_exponent; ++exp) { |
| int dec_exp = 0; |
| auto fp = fmt::detail::get_cached_power(exp, dec_exp); |
| bigint exact, cache(fp.f); |
| if (dec_exp >= 0) { |
| exact.assign_pow10(dec_exp); |
| if (fp.e <= 0) |
| exact <<= -fp.e; |
| else |
| cache <<= fp.e; |
| exact.align(cache); |
| cache.align(exact); |
| auto exact_str = fmt::format("{}", exact); |
| auto cache_str = fmt::format("{}", cache); |
| EXPECT_EQ(exact_str.size(), cache_str.size()); |
| EXPECT_EQ(exact_str.substr(0, 15), cache_str.substr(0, 15)); |
| int diff = cache_str[15] - exact_str[15]; |
| if (diff == 1) |
| EXPECT_GT(exact_str[16], '8'); |
| else |
| EXPECT_EQ(diff, 0); |
| } else { |
| cache.assign_pow10(-dec_exp); |
| cache *= fp.f + 1; // Inexact check. |
| exact.assign(1); |
| exact <<= -fp.e; |
| exact.align(cache); |
| auto exact_str = fmt::format("{}", exact); |
| auto cache_str = fmt::format("{}", cache); |
| EXPECT_EQ(exact_str.size(), cache_str.size()); |
| EXPECT_EQ(exact_str.substr(0, 16), cache_str.substr(0, 16)); |
| } |
| } |
| } |
| |
| TEST(FPTest, DragonboxMaxK) { |
| using fmt::detail::dragonbox::floor_log10_pow2; |
| using float_info = fmt::detail::dragonbox::float_info<float>; |
| EXPECT_EQ(fmt::detail::const_check(float_info::max_k), |
| float_info::kappa - floor_log10_pow2(float_info::min_exponent - |
| float_info::significand_bits)); |
| using double_info = fmt::detail::dragonbox::float_info<double>; |
| EXPECT_EQ( |
| fmt::detail::const_check(double_info::max_k), |
| double_info::kappa - floor_log10_pow2(double_info::min_exponent - |
| double_info::significand_bits)); |
| } |
| |
| TEST(FPTest, GetRoundDirection) { |
| using fmt::detail::get_round_direction; |
| using fmt::detail::round_direction; |
| EXPECT_EQ(round_direction::down, get_round_direction(100, 50, 0)); |
| EXPECT_EQ(round_direction::up, get_round_direction(100, 51, 0)); |
| EXPECT_EQ(round_direction::down, get_round_direction(100, 40, 10)); |
| EXPECT_EQ(round_direction::up, get_round_direction(100, 60, 10)); |
| for (size_t i = 41; i < 60; ++i) |
| EXPECT_EQ(round_direction::unknown, get_round_direction(100, i, 10)); |
| uint64_t max = max_value<uint64_t>(); |
| EXPECT_THROW(get_round_direction(100, 100, 0), assertion_failure); |
| EXPECT_THROW(get_round_direction(100, 0, 100), assertion_failure); |
| EXPECT_THROW(get_round_direction(100, 0, 50), assertion_failure); |
| // Check that remainder + error doesn't overflow. |
| EXPECT_EQ(round_direction::up, get_round_direction(max, max - 1, 2)); |
| // Check that 2 * (remainder + error) doesn't overflow. |
| EXPECT_EQ(round_direction::unknown, |
| get_round_direction(max, max / 2 + 1, max / 2)); |
| // Check that remainder - error doesn't overflow. |
| EXPECT_EQ(round_direction::unknown, get_round_direction(100, 40, 41)); |
| // Check that 2 * (remainder - error) doesn't overflow. |
| EXPECT_EQ(round_direction::up, get_round_direction(max, max - 1, 1)); |
| } |
| |
| TEST(FPTest, FixedHandler) { |
| struct handler : fmt::detail::fixed_handler { |
| char buffer[10]; |
| handler(int prec = 0) : fmt::detail::fixed_handler() { |
| buf = buffer; |
| precision = prec; |
| } |
| }; |
| int exp = 0; |
| handler().on_digit('0', 100, 99, 0, exp, false); |
| EXPECT_THROW(handler().on_digit('0', 100, 100, 0, exp, false), |
| assertion_failure); |
| namespace digits = fmt::detail::digits; |
| EXPECT_EQ(handler(1).on_digit('0', 100, 10, 10, exp, false), digits::error); |
| // Check that divisor - error doesn't overflow. |
| EXPECT_EQ(handler(1).on_digit('0', 100, 10, 101, exp, false), digits::error); |
| // Check that 2 * error doesn't overflow. |
| uint64_t max = max_value<uint64_t>(); |
| EXPECT_EQ(handler(1).on_digit('0', max, 10, max - 1, exp, false), |
| digits::error); |
| } |
| |
| TEST(FPTest, GrisuFormatCompilesWithNonIEEEDouble) { |
| fmt::memory_buffer buf; |
| format_float(0.42, -1, fmt::detail::float_specs(), buf); |
| } |
| |
| template <typename T> struct value_extractor { |
| T operator()(T value) { return value; } |
| |
| template <typename U> FMT_NORETURN T operator()(U) { |
| throw std::runtime_error(fmt::format("invalid type {}", typeid(U).name())); |
| } |
| |
| #if FMT_USE_INT128 |
| // Apple Clang does not define typeid for __int128_t and __uint128_t. |
| FMT_NORETURN T operator()(fmt::detail::int128_t) { |
| throw std::runtime_error("invalid type __int128_t"); |
| } |
| |
| FMT_NORETURN T operator()(fmt::detail::uint128_t) { |
| throw std::runtime_error("invalid type __uint128_t"); |
| } |
| #endif |
| }; |
| |
| TEST(FormatTest, ArgConverter) { |
| long long value = max_value<long long>(); |
| auto arg = fmt::detail::make_arg<fmt::format_context>(value); |
| fmt::visit_format_arg( |
| fmt::detail::arg_converter<long long, fmt::format_context>(arg, 'd'), |
| arg); |
| EXPECT_EQ(value, fmt::visit_format_arg(value_extractor<long long>(), arg)); |
| } |
| |
| TEST(FormatTest, StrError) { |
| char* message = nullptr; |
| char buffer[BUFFER_SIZE]; |
| EXPECT_ASSERT(fmt::detail::safe_strerror(EDOM, message = nullptr, 0), |
| "invalid buffer"); |
| EXPECT_ASSERT(fmt::detail::safe_strerror(EDOM, message = buffer, 0), |
| "invalid buffer"); |
| buffer[0] = 'x'; |
| #if defined(_GNU_SOURCE) && !defined(__COVERITY__) |
| // Use invalid error code to make sure that safe_strerror returns an error |
| // message in the buffer rather than a pointer to a static string. |
| int error_code = -1; |
| #else |
| int error_code = EDOM; |
| #endif |
| |
| int result = |
| fmt::detail::safe_strerror(error_code, message = buffer, BUFFER_SIZE); |
| EXPECT_EQ(result, 0); |
| size_t message_size = std::strlen(message); |
| EXPECT_GE(BUFFER_SIZE - 1u, message_size); |
| EXPECT_EQ(get_system_error(error_code), message); |
| |
| // safe_strerror never uses buffer on MinGW. |
| #if !defined(__MINGW32__) && !defined(__sun) |
| result = |
| fmt::detail::safe_strerror(error_code, message = buffer, message_size); |
| EXPECT_EQ(ERANGE, result); |
| result = fmt::detail::safe_strerror(error_code, message = buffer, 1); |
| EXPECT_EQ(buffer, message); // Message should point to buffer. |
| EXPECT_EQ(ERANGE, result); |
| EXPECT_STREQ("", message); |
| #endif |
| } |
| |
| TEST(FormatTest, FormatErrorCode) { |
| std::string msg = "error 42", sep = ": "; |
| { |
| fmt::memory_buffer buffer; |
| format_to(buffer, "garbage"); |
| fmt::detail::format_error_code(buffer, 42, "test"); |
| EXPECT_EQ("test: " + msg, to_string(buffer)); |
| } |
| { |
| fmt::memory_buffer buffer; |
| std::string prefix(fmt::inline_buffer_size - msg.size() - sep.size() + 1, |
| 'x'); |
| fmt::detail::format_error_code(buffer, 42, prefix); |
| EXPECT_EQ(msg, to_string(buffer)); |
| } |
| int codes[] = {42, -1}; |
| for (size_t i = 0, n = sizeof(codes) / sizeof(*codes); i < n; ++i) { |
| // Test maximum buffer size. |
| msg = fmt::format("error {}", codes[i]); |
| fmt::memory_buffer buffer; |
| std::string prefix(fmt::inline_buffer_size - msg.size() - sep.size(), 'x'); |
| fmt::detail::format_error_code(buffer, codes[i], prefix); |
| EXPECT_EQ(prefix + sep + msg, to_string(buffer)); |
| size_t size = fmt::inline_buffer_size; |
| EXPECT_EQ(size, buffer.size()); |
| buffer.resize(0); |
| // Test with a message that doesn't fit into the buffer. |
| prefix += 'x'; |
| fmt::detail::format_error_code(buffer, codes[i], prefix); |
| EXPECT_EQ(msg, to_string(buffer)); |
| } |
| } |
| |
| TEST(FormatTest, CountCodePoints) { |
| EXPECT_EQ(4, |
| fmt::detail::count_code_points( |
| fmt::basic_string_view<fmt::detail::char8_type>( |
| reinterpret_cast<const fmt::detail::char8_type*>("ёжик")))); |
| } |
| |
| // Tests fmt::detail::count_digits for integer type Int. |
| template <typename Int> void test_count_digits() { |
| for (Int i = 0; i < 10; ++i) EXPECT_EQ(1u, fmt::detail::count_digits(i)); |
| for (Int i = 1, n = 1, end = max_value<Int>() / 10; n <= end; ++i) { |
| n *= 10; |
| EXPECT_EQ(i, fmt::detail::count_digits(n - 1)); |
| EXPECT_EQ(i + 1, fmt::detail::count_digits(n)); |
| } |
| } |
| |
| TEST(UtilTest, CountDigits) { |
| test_count_digits<uint32_t>(); |
| test_count_digits<uint64_t>(); |
| } |
| |
| TEST(UtilTest, WriteFallbackUIntPtr) { |
| std::string s; |
| fmt::detail::write_ptr<char>( |
| std::back_inserter(s), |
| fmt::detail::fallback_uintptr(reinterpret_cast<void*>(0xface)), nullptr); |
| EXPECT_EQ(s, "0xface"); |
| } |
| |
| #ifdef _WIN32 |
| TEST(UtilTest, WriteConsoleSignature) { |
| decltype(WriteConsoleW)* p = fmt::detail::WriteConsoleW; |
| (void)p; |
| } |
| #endif |