--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dep/fmt/test/util.h	Thu Jun 20 05:56:06 2024 -0400
@@ -0,0 +1,83 @@
+// Formatting library for C++ - test utilities
+//
+// Copyright (c) 2012 - present, Victor Zverovich
+// All rights reserved.
+//
+// For the license information refer to format.h.
+
+#include <cstdarg>
+#include <cstdio>
+#include <locale>
+#include <string>
+
+#include "fmt/os.h"
+
+#ifdef _MSC_VER
+#  define FMT_VSNPRINTF vsprintf_s
+#else
+#  define FMT_VSNPRINTF vsnprintf
+#endif
+
+template <size_t SIZE>
+void safe_sprintf(char (&buffer)[SIZE], const char* format, ...) {
+  std::va_list args;
+  va_start(args, format);
+  FMT_VSNPRINTF(buffer, SIZE, format, args);
+  va_end(args);
+}
+
+extern const char* const file_content;
+
+// Opens a buffered file for reading.
+auto open_buffered_file(FILE** fp = nullptr) -> fmt::buffered_file;
+
+inline auto safe_fopen(const char* filename, const char* mode) -> FILE* {
+#if defined(_WIN32) && !defined(__MINGW32__)
+  // Fix MSVC warning about "unsafe" fopen.
+  FILE* f = nullptr;
+  errno = fopen_s(&f, filename, mode);
+  return f;
+#else
+  return std::fopen(filename, mode);
+#endif
+}
+
+template <typename Char> class basic_test_string {
+ private:
+  std::basic_string<Char> value_;
+
+  static const Char empty[];
+
+ public:
+  explicit basic_test_string(const Char* value = empty) : value_(value) {}
+
+  auto value() const -> const std::basic_string<Char>& { return value_; }
+};
+
+template <typename Char> const Char basic_test_string<Char>::empty[] = {0};
+
+using test_string = basic_test_string<char>;
+using test_wstring = basic_test_string<wchar_t>;
+
+template <typename Char>
+auto operator<<(std::basic_ostream<Char>& os, const basic_test_string<Char>& s)
+    -> std::basic_ostream<Char>& {
+  os << s.value();
+  return os;
+}
+
+class date {
+  int year_, month_, day_;
+
+ public:
+  date(int year, int month, int day) : year_(year), month_(month), day_(day) {}
+
+  auto year() const -> int { return year_; }
+  auto month() const -> int { return month_; }
+  auto day() const -> int { return day_; }
+};
+
+// Returns a locale with the given name if available or classic locale
+// otherwise.
+auto get_locale(const char* name, const char* alt_name = nullptr)
+    -> std::locale;