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annotate dep/fmt/test/args-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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1 // Formatting library for C++ - dynamic argument store tests
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2 //
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3 // Copyright (c) 2012 - 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 "fmt/args.h"
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9
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10 #include <memory>
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11
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12 #include "gtest/gtest.h"
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13
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14 TEST(args_test, basic) {
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15 fmt::dynamic_format_arg_store<fmt::format_context> store;
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16 store.push_back(42);
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17 store.push_back("abc1");
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18 store.push_back(1.5f);
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19 EXPECT_EQ("42 and abc1 and 1.5", fmt::vformat("{} and {} and {}", store));
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20 }
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21
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22 TEST(args_test, strings_and_refs) {
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23 // Unfortunately the tests are compiled with old ABI so strings use COW.
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24 fmt::dynamic_format_arg_store<fmt::format_context> store;
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25 char str[] = "1234567890";
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26 store.push_back(str);
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27 store.push_back(std::cref(str));
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28 store.push_back(fmt::string_view{str});
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29 str[0] = 'X';
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30
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31 auto result = fmt::vformat("{} and {} and {}", store);
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32 EXPECT_EQ("1234567890 and X234567890 and X234567890", result);
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33 }
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34
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35 struct custom_type {
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36 int i = 0;
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37 };
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38
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39 FMT_BEGIN_NAMESPACE
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40 template <> struct formatter<custom_type> {
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41 auto parse(format_parse_context& ctx) const -> decltype(ctx.begin()) {
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42 return ctx.begin();
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43 }
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44
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45 template <typename FormatContext>
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46 auto format(const custom_type& p, FormatContext& ctx) -> decltype(ctx.out()) {
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47 return fmt::format_to(ctx.out(), "cust={}", p.i);
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48 }
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49 };
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50 FMT_END_NAMESPACE
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51
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52 TEST(args_test, custom_format) {
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53 fmt::dynamic_format_arg_store<fmt::format_context> store;
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54 auto c = custom_type();
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55 store.push_back(c);
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56 ++c.i;
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57 store.push_back(c);
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58 ++c.i;
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59 store.push_back(std::cref(c));
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60 ++c.i;
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61 auto result = fmt::vformat("{} and {} and {}", store);
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62 EXPECT_EQ("cust=0 and cust=1 and cust=3", result);
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63 }
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64
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65 struct to_stringable {
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66 friend fmt::string_view to_string_view(to_stringable) { return {}; }
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67 };
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68
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69 FMT_BEGIN_NAMESPACE
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70 template <> struct formatter<to_stringable> {
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71 auto parse(format_parse_context& ctx) const -> decltype(ctx.begin()) {
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72 return ctx.begin();
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73 }
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74
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75 auto format(to_stringable, format_context& ctx) -> decltype(ctx.out()) {
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76 return ctx.out();
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77 }
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78 };
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79 FMT_END_NAMESPACE
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80
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81 TEST(args_test, to_string_and_formatter) {
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82 fmt::dynamic_format_arg_store<fmt::format_context> store;
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83 auto s = to_stringable();
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84 store.push_back(s);
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85 store.push_back(std::cref(s));
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86 fmt::vformat("", store);
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87 }
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88
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89 TEST(args_test, named_int) {
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90 fmt::dynamic_format_arg_store<fmt::format_context> store;
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91 store.push_back(fmt::arg("a1", 42));
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92 EXPECT_EQ("42", fmt::vformat("{a1}", store));
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93 }
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94
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95 TEST(args_test, named_strings) {
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96 fmt::dynamic_format_arg_store<fmt::format_context> store;
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97 char str[] = "1234567890";
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98 store.push_back(fmt::arg("a1", str));
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99 store.push_back(fmt::arg("a2", std::cref(str)));
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100 str[0] = 'X';
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101 EXPECT_EQ("1234567890 and X234567890", fmt::vformat("{a1} and {a2}", store));
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102 }
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103
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104 TEST(args_test, named_arg_by_ref) {
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105 fmt::dynamic_format_arg_store<fmt::format_context> store;
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106 char band[] = "Rolling Stones";
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107 store.push_back(fmt::arg("band", std::cref(band)));
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108 band[9] = 'c'; // Changing band affects the output.
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109 EXPECT_EQ(fmt::vformat("{band}", store), "Rolling Scones");
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110 }
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111
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112 TEST(args_test, named_custom_format) {
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113 fmt::dynamic_format_arg_store<fmt::format_context> store;
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114 auto c = custom_type();
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115 store.push_back(fmt::arg("c1", c));
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116 ++c.i;
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117 store.push_back(fmt::arg("c2", c));
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118 ++c.i;
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119 store.push_back(fmt::arg("c_ref", std::cref(c)));
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120 ++c.i;
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121 auto result = fmt::vformat("{c1} and {c2} and {c_ref}", store);
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122 EXPECT_EQ("cust=0 and cust=1 and cust=3", result);
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123 }
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124
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125 TEST(args_test, clear) {
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126 fmt::dynamic_format_arg_store<fmt::format_context> store;
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127 store.push_back(42);
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128
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129 auto result = fmt::vformat("{}", store);
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130 EXPECT_EQ("42", result);
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131
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132 store.push_back(43);
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133 result = fmt::vformat("{} and {}", store);
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134 EXPECT_EQ("42 and 43", result);
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135
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136 store.clear();
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137 store.push_back(44);
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138 result = fmt::vformat("{}", store);
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139 EXPECT_EQ("44", result);
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140 }
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141
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142 TEST(args_test, reserve) {
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143 fmt::dynamic_format_arg_store<fmt::format_context> store;
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144 store.reserve(2, 1);
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145 store.push_back(1.5f);
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146 store.push_back(fmt::arg("a1", 42));
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147 auto result = fmt::vformat("{a1} and {}", store);
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148 EXPECT_EQ("42 and 1.5", result);
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149 }
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150
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151 struct copy_throwable {
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152 copy_throwable() {}
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153 copy_throwable(const copy_throwable&) { throw "deal with it"; }
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154 };
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155
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156 FMT_BEGIN_NAMESPACE
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157 template <> struct formatter<copy_throwable> {
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158 auto parse(format_parse_context& ctx) const -> decltype(ctx.begin()) {
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159 return ctx.begin();
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160 }
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161 auto format(copy_throwable, format_context& ctx) -> decltype(ctx.out()) {
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162 return ctx.out();
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163 }
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164 };
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165 FMT_END_NAMESPACE
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166
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167 TEST(args_test, throw_on_copy) {
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168 fmt::dynamic_format_arg_store<fmt::format_context> store;
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169 store.push_back(std::string("foo"));
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170 try {
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171 store.push_back(copy_throwable());
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172 } catch (...) {
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173 }
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174 EXPECT_EQ(fmt::vformat("{}", store), "foo");
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175 }
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176
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177 TEST(args_test, move_constructor) {
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178 using store_type = fmt::dynamic_format_arg_store<fmt::format_context>;
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179 auto store = std::unique_ptr<store_type>(new store_type());
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180 store->push_back(42);
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181 store->push_back(std::string("foo"));
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182 store->push_back(fmt::arg("a1", "foo"));
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183 auto moved_store = std::move(*store);
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184 store.reset();
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185 EXPECT_EQ(fmt::vformat("{} {} {a1}", moved_store), "42 foo foo");
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186 }