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annotate dep/fmt/test/scan-test.cc @ 355:83e6ba09338f

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gui/pages/seasons: fix function disambiguation on win32
author Paper <paper@paper.us.eu.org>
date Sun, 14 Jul 2024 23:46:18 -0400
parents 1faa72660932
children
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343
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Paper <paper@paper.us.eu.org>
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1 // Formatting library for C++ - scanning API test
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2 //
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3 // Copyright (c) 2019 - present, Victor Zverovich
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4 // All rights reserved.
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5 //
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6 // For the license information refer to format.h.
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7
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8 #include "scan.h"
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9
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10 #include <time.h>
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11
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12 #include <climits>
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13 #include <thread>
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14
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15 #include "fmt/os.h"
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16 #include "gmock/gmock.h"
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17 #include "gtest-extra.h"
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18
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19 TEST(scan_test, read_text) {
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20 fmt::string_view s = "foo";
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21 auto end = fmt::scan(s, "foo");
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22 EXPECT_EQ(end, s.end());
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23 EXPECT_THROW_MSG(fmt::scan("fob", "foo"), fmt::format_error, "invalid input");
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24 }
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25
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26 TEST(scan_test, read_int) {
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27 int n = 0;
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28 fmt::scan("42", "{}", n);
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29 EXPECT_EQ(n, 42);
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30 fmt::scan("-42", "{}", n);
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31 EXPECT_EQ(n, -42);
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32 fmt::scan("42", "{:}", n);
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33 EXPECT_EQ(n, 42);
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34 EXPECT_THROW_MSG(fmt::scan(std::to_string(INT_MAX + 1u), "{}", n),
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35 fmt::format_error, "number is too big");
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36 }
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37
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38 TEST(scan_test, read_longlong) {
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39 long long n = 0;
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40 fmt::scan("42", "{}", n);
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41 EXPECT_EQ(n, 42);
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42 fmt::scan("-42", "{}", n);
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43 EXPECT_EQ(n, -42);
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44 }
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45
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46 TEST(scan_test, read_uint) {
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47 unsigned n = 0;
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48 fmt::scan("42", "{}", n);
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49 EXPECT_EQ(n, 42);
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50 EXPECT_THROW_MSG(fmt::scan("-42", "{}", n), fmt::format_error,
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51 "invalid input");
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52 }
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53
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54 TEST(scan_test, read_ulonglong) {
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55 unsigned long long n = 0;
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56 fmt::scan("42", "{}", n);
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57 EXPECT_EQ(n, 42);
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58 EXPECT_THROW_MSG(fmt::scan("-42", "{}", n), fmt::format_error,
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59 "invalid input");
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60 }
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61
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62 TEST(scan_test, read_hex) {
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63 unsigned n = 0;
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64 fmt::scan("2a", "{:x}", n);
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65 EXPECT_EQ(n, 42);
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66 auto num_digits = std::numeric_limits<unsigned>::digits / 4;
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67 EXPECT_THROW_MSG(fmt::scan(fmt::format("1{:0{}}", 0, num_digits), "{:x}", n),
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68 fmt::format_error, "number is too big");
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69 }
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70
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71 TEST(scan_test, read_string) {
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72 std::string s;
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73 fmt::scan("foo", "{}", s);
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74 EXPECT_EQ(s, "foo");
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75 }
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76
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77 TEST(scan_test, read_string_view) {
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78 fmt::string_view s;
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79 fmt::scan("foo", "{}", s);
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80 EXPECT_EQ(s, "foo");
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81 }
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82
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83 TEST(scan_test, separator) {
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84 int n1 = 0, n2 = 0;
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85 fmt::scan("10 20", "{} {}", n1, n2);
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86 EXPECT_EQ(n1, 10);
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87 EXPECT_EQ(n2, 20);
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88 }
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89
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90 struct num {
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91 int value;
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92 };
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93
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94 namespace fmt {
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95 template <> struct scanner<num> {
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96 bool hex = false;
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97
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98 auto parse(scan_parse_context& ctx) -> scan_parse_context::iterator {
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99 auto it = ctx.begin(), end = ctx.end();
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100 if (it != end && *it == 'x') hex = true;
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101 if (it != end && *it != '}') throw_format_error("invalid format");
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102 return it;
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103 }
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104
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105 template <class ScanContext>
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106 auto scan(num& n, ScanContext& ctx) const -> typename ScanContext::iterator {
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107 // TODO: handle specifier
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108 return fmt::scan(ctx, "{}", n.value);
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109 }
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110 };
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111 } // namespace fmt
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112
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113 TEST(scan_test, read_custom) {
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114 auto input = "42";
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115 auto n = num();
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116 fmt::scan(input, "{:}", n);
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117 EXPECT_EQ(n.value, 42);
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118 }
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119
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120 TEST(scan_test, invalid_format) {
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121 EXPECT_THROW_MSG(fmt::scan("", "{}"), fmt::format_error,
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122 "argument index out of range");
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123 EXPECT_THROW_MSG(fmt::scan("", "{"), fmt::format_error,
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124 "invalid format string");
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125 }
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126
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127 TEST(scan_test, example) {
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128 std::string key;
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129 int value = 0;
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130 fmt::scan("answer = 42", "{} = {}", key, value);
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131 EXPECT_EQ(key, "answer");
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132 EXPECT_EQ(value, 42);
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133 }
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134
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135 TEST(scan_test, end_of_input) {
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136 int value = 0;
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137 fmt::scan("", "{}", value);
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138 }
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139
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140 #if FMT_USE_FCNTL
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141 TEST(scan_test, file) {
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142 fmt::file read_end, write_end;
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143 fmt::file::pipe(read_end, write_end);
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144
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145 fmt::string_view input = "10 20";
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146 write_end.write(input.data(), input.size());
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147 write_end.close();
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148
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149 int n1 = 0, n2 = 0;
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150 fmt::buffered_file f = read_end.fdopen("r");
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151 fmt::scan(f.get(), "{} {}", n1, n2);
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152 EXPECT_EQ(n1, 10);
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153 EXPECT_EQ(n2, 20);
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154 }
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155
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156 TEST(scan_test, lock) {
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157 fmt::file read_end, write_end;
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158 fmt::file::pipe(read_end, write_end);
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159
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160 std::thread producer([&]() {
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161 fmt::string_view input = "42 ";
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162 for (int i = 0; i < 1000; ++i) write_end.write(input.data(), input.size());
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163 write_end.close();
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164 });
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165
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166 std::atomic<int> count(0);
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167 fmt::buffered_file f = read_end.fdopen("r");
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168 auto fun = [&]() {
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169 int value = 0;
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170 while (fmt::scan(f.get(), "{}", value)) {
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171 if (value != 42) {
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172 read_end.close();
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173 EXPECT_EQ(value, 42);
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174 break;
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175 }
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176 ++count;
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177 }
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178 };
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179 std::thread consumer1(fun);
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180 std::thread consumer2(fun);
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181
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182 producer.join();
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183 consumer1.join();
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184 consumer2.join();
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185 EXPECT_EQ(count, 1000);
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186
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187 }
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188 #endif // FMT_USE_FCNTL