libcxx/test/std/thread/thread.threads/thread.thread.class/thread.thread.id/format.functions.vformat.pass.cpp

   1 //===----------------------------------------------------------------------===//
   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-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
  10 // UNSUPPORTED: no-threads
  11
  12 // UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME
  13
  14 // TODO FMT This test should not require std::to_chars(floating-point)
  15 // XFAIL: availability-fp_to_chars-missing
  16
  17 // <thread>
  18
  19 // template<class charT>
  20 // struct formatter<thread::id, charT>;
  21
  22 // string vformat(string_view fmt, format_args args);
  23 // wstring vformat(wstring_view fmt, wformat_args args);
  24
  25 #include <format>
  26 #include <cassert>
  27
  28 #include "assert_macros.h"
  29 #include "concat_macros.h"
  30 #include "format.functions.tests.h"
  31 #include "test_macros.h"
  32
  33 auto test = []<class CharT, class... Args>(
  34                 std::basic_string_view<CharT> expected, std::basic_string_view<CharT> fmt, Args&&... args) {
  35   std::basic_string<CharT> out = std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...));
  36   TEST_REQUIRE(out == expected,
  37                TEST_WRITE_CONCATENATED(
  38                    "\nFormat string   ", fmt, "\nExpected output ", expected, "\nActual output   ", out, '\n'));
  39 };
  40
  41 auto test_exception =
  42     []<class CharT, class... Args>(
  43         [[maybe_unused]] std::string_view what,
  44         [[maybe_unused]] std::basic_string_view<CharT> fmt,
  45         [[maybe_unused]] Args&&... args) {
  46       TEST_VALIDATE_EXCEPTION(
  47           std::format_error,
  48           [&]([[maybe_unused]] const std::format_error& e) {
  49             TEST_LIBCPP_REQUIRE(
  50                 e.what() == what,
  51                 TEST_WRITE_CONCATENATED(
  52                     "\nFormat string   ", fmt, "\nExpected exception ", what, "\nActual exception   ", e.what(), '\n'));
  53           },
  54           TEST_IGNORE_NODISCARD std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...)));
  55     };
  56
  57 int main(int, char**) {
  58   format_tests<char>(test, test_exception);
  59
  60 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
  61   format_tests<wchar_t>(test, test_exception);
  62 #endif
  63
  64   return 0;
  65 }