//===----------------------------------------------------------------------===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
// UNSUPPORTED: libcpp-has-no-incomplete-format

// TODO FMT Fix this test using GCC, it currently times out.
// UNSUPPORTED: gcc-12

// This test requires the dylib support introduced in D92214.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{.+}}
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx11.{{.+}}

// <format>

//  template<class T, class charT = char>
//    requires same_as<remove_cvref_t<T>, T> && formattable<T, charT>
//  class range_formatter;

// string vformat(string_view fmt, format_args args);
// wstring vformat(wstring_view fmt, wformat_args args);

#include <format>
#include <cassert>

#include "format.functions.tests.h"
#include "test_macros.h"
#include "assert_macros.h"

auto test = []<class CharT, class... Args>(
                std::basic_string_view<CharT> expected, std::basic_string_view<CharT> fmt, Args&&... args) {
  std::basic_string<CharT> out = std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...));
  TEST_REQUIRE(
      out == expected,
      test_concat_message("\nFormat string   ", fmt, "\nExpected output ", expected, "\nActual output   ", out, '\n'));
};

auto test_exception =
    []<class CharT, class... Args>(
        [[maybe_unused]] std::string_view what,
        [[maybe_unused]] std::basic_string_view<CharT> fmt,
        [[maybe_unused]] Args&&... args) {
#ifndef TEST_HAS_NO_EXCEPTIONS
      try {
        TEST_IGNORE_NODISCARD std::vformat(fmt, std::make_format_args<context_t<CharT>>(args...));
        TEST_FAIL(test_concat_message("\nFormat string   ", fmt, "\nDidn't throw an exception.\n"));
      } catch (const std::format_error& e) {
        TEST_LIBCPP_REQUIRE(
            e.what() == what,
            test_concat_message(
                "\nFormat string   ", fmt, "\nExpected exception ", what, "\nActual exception   ", e.what(), '\n'));

        return;
      }
      assert(false);
#endif
    };

int main(int, char**) {
  format_tests<char>(test, test_exception);

#ifndef TEST_HAS_NO_WIDE_CHARACTERS
  format_tests<wchar_t>(test, test_exception);
#endif

  return 0;
}
