174 lines · cpp
1//===- llvm/unittest/Support/NativeFormatTests.cpp - formatting tests -----===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "llvm/Support/NativeFormatting.h"10#include "llvm/Support/raw_ostream.h"11#include "gtest/gtest.h"12 13using namespace llvm;14 15namespace {16 17template <typename T> std::string format_number(T N, IntegerStyle Style) {18 std::string S;19 llvm::raw_string_ostream Str(S);20 write_integer(Str, N, 0, Style);21 return S;22}23 24std::string format_number(uint64_t N, HexPrintStyle Style,25 std::optional<size_t> Width = std::nullopt) {26 std::string S;27 llvm::raw_string_ostream Str(S);28 write_hex(Str, N, Style, Width);29 return S;30}31 32std::string format_number(double D, FloatStyle Style,33 std::optional<size_t> Precision = std::nullopt) {34 std::string S;35 llvm::raw_string_ostream Str(S);36 write_double(Str, D, Style, Precision);37 return S;38}39 40// Test basic number formatting with various styles and default width and41// precision.42TEST(NativeFormatTest, BasicIntegerTests) {43 // Simple integers with no decimal.44 EXPECT_EQ("0", format_number(0, IntegerStyle::Integer));45 EXPECT_EQ("1", format_number(1, IntegerStyle::Integer));46 EXPECT_EQ("-1", format_number(-1, IntegerStyle::Integer));47 EXPECT_EQ("2425", format_number(2425, IntegerStyle::Integer));48 EXPECT_EQ("-2425", format_number(-2425, IntegerStyle::Integer));49 50 EXPECT_EQ("0", format_number(0LL, IntegerStyle::Integer));51 EXPECT_EQ("257257257235709",52 format_number(257257257235709LL, IntegerStyle::Integer));53 EXPECT_EQ("-257257257235709",54 format_number(-257257257235709LL, IntegerStyle::Integer));55 56 // Number formatting.57 EXPECT_EQ("0", format_number(0, IntegerStyle::Number));58 EXPECT_EQ("2,425", format_number(2425, IntegerStyle::Number));59 EXPECT_EQ("-2,425", format_number(-2425, IntegerStyle::Number));60 EXPECT_EQ("257,257,257,235,709",61 format_number(257257257235709LL, IntegerStyle::Number));62 EXPECT_EQ("-257,257,257,235,709",63 format_number(-257257257235709LL, IntegerStyle::Number));64 65 // Hex formatting.66 // lower case, prefix.67 EXPECT_EQ("0x0", format_number(0, HexPrintStyle::PrefixLower));68 EXPECT_EQ("0xbeef", format_number(0xbeefLL, HexPrintStyle::PrefixLower));69 EXPECT_EQ("0xdeadbeef",70 format_number(0xdeadbeefLL, HexPrintStyle::PrefixLower));71 72 // upper-case, prefix.73 EXPECT_EQ("0x0", format_number(0, HexPrintStyle::PrefixUpper));74 EXPECT_EQ("0xBEEF", format_number(0xbeefLL, HexPrintStyle::PrefixUpper));75 EXPECT_EQ("0xDEADBEEF",76 format_number(0xdeadbeefLL, HexPrintStyle::PrefixUpper));77 78 // lower-case, no prefix79 EXPECT_EQ("0", format_number(0, HexPrintStyle::Lower));80 EXPECT_EQ("beef", format_number(0xbeefLL, HexPrintStyle::Lower));81 EXPECT_EQ("deadbeef", format_number(0xdeadbeefLL, HexPrintStyle::Lower));82 83 // upper-case, no prefix.84 EXPECT_EQ("0", format_number(0, HexPrintStyle::Upper));85 EXPECT_EQ("BEEF", format_number(0xbeef, HexPrintStyle::Upper));86 EXPECT_EQ("DEADBEEF", format_number(0xdeadbeef, HexPrintStyle::Upper));87}88 89// Test basic floating point formatting with various styles and default width90// and precision.91TEST(NativeFormatTest, BasicFloatingPointTests) {92 // Double93 EXPECT_EQ("0.000000e+00", format_number(0.0, FloatStyle::Exponent));94 EXPECT_EQ("-0.000000e+00", format_number(-0.0, FloatStyle::Exponent));95 EXPECT_EQ("1.100000e+00", format_number(1.1, FloatStyle::Exponent));96 EXPECT_EQ("1.100000E+00", format_number(1.1, FloatStyle::ExponentUpper));97 98 // Default precision is 2 for floating points.99 EXPECT_EQ("1.10", format_number(1.1, FloatStyle::Fixed));100 EXPECT_EQ("1.34", format_number(1.34, FloatStyle::Fixed));101 EXPECT_EQ("1.34", format_number(1.344, FloatStyle::Fixed));102 EXPECT_EQ("1.35", format_number(1.346, FloatStyle::Fixed));103}104 105// Test common boundary cases and min/max conditions.106TEST(NativeFormatTest, BoundaryTests) {107 // Min and max.108 EXPECT_EQ("18446744073709551615",109 format_number(UINT64_MAX, IntegerStyle::Integer));110 111 EXPECT_EQ("9223372036854775807",112 format_number(INT64_MAX, IntegerStyle::Integer));113 EXPECT_EQ("-9223372036854775808",114 format_number(INT64_MIN, IntegerStyle::Integer));115 116 EXPECT_EQ("4294967295", format_number(UINT32_MAX, IntegerStyle::Integer));117 EXPECT_EQ("2147483647", format_number(INT32_MAX, IntegerStyle::Integer));118 EXPECT_EQ("-2147483648", format_number(INT32_MIN, IntegerStyle::Integer));119 120 EXPECT_EQ("nan", format_number(std::numeric_limits<double>::quiet_NaN(),121 FloatStyle::Fixed));122 EXPECT_EQ("INF", format_number(std::numeric_limits<double>::infinity(),123 FloatStyle::Fixed));124 EXPECT_EQ("-INF", format_number(-std::numeric_limits<double>::infinity(),125 FloatStyle::Fixed));126}127 128TEST(NativeFormatTest, HexTests) {129 // Test hex formatting with different widths and precisions.130 131 // Width less than the value should print the full value anyway.132 EXPECT_EQ("0x0", format_number(0, HexPrintStyle::PrefixLower, 0));133 EXPECT_EQ("0xabcde", format_number(0xABCDE, HexPrintStyle::PrefixLower, 3));134 135 // Precision greater than the value should pad with 0s.136 // TODO: The prefix should not be counted in the precision. But unfortunately137 // it is and we have to live with it unless we fix all existing users of138 // prefixed hex formatting.139 EXPECT_EQ("0x000", format_number(0, HexPrintStyle::PrefixLower, 5));140 EXPECT_EQ("0x0abcde", format_number(0xABCDE, HexPrintStyle::PrefixLower, 8));141 142 EXPECT_EQ("00000", format_number(0, HexPrintStyle::Lower, 5));143 EXPECT_EQ("000abcde", format_number(0xABCDE, HexPrintStyle::Lower, 8));144 145 // Try printing more digits than can fit in a uint64.146 EXPECT_EQ("0x00000000000000abcde",147 format_number(0xABCDE, HexPrintStyle::PrefixLower, 21));148}149 150TEST(NativeFormatTest, IntegerTests) {151 EXPECT_EQ("-10", format_number(-10, IntegerStyle::Integer));152 EXPECT_EQ("-100", format_number(-100, IntegerStyle::Integer));153 EXPECT_EQ("-1000", format_number(-1000, IntegerStyle::Integer));154 EXPECT_EQ("-1234567890", format_number(-1234567890, IntegerStyle::Integer));155 EXPECT_EQ("10", format_number(10, IntegerStyle::Integer));156 EXPECT_EQ("100", format_number(100, IntegerStyle::Integer));157 EXPECT_EQ("1000", format_number(1000, IntegerStyle::Integer));158 EXPECT_EQ("1234567890", format_number(1234567890, IntegerStyle::Integer));159}160 161TEST(NativeFormatTest, CommaTests) {162 EXPECT_EQ("0", format_number(0, IntegerStyle::Number));163 EXPECT_EQ("10", format_number(10, IntegerStyle::Number));164 EXPECT_EQ("100", format_number(100, IntegerStyle::Number));165 EXPECT_EQ("1,000", format_number(1000, IntegerStyle::Number));166 EXPECT_EQ("1,234,567,890", format_number(1234567890, IntegerStyle::Number));167 168 EXPECT_EQ("-10", format_number(-10, IntegerStyle::Number));169 EXPECT_EQ("-100", format_number(-100, IntegerStyle::Number));170 EXPECT_EQ("-1,000", format_number(-1000, IntegerStyle::Number));171 EXPECT_EQ("-1,234,567,890", format_number(-1234567890, IntegerStyle::Number));172}173}174