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
10// UNSUPPORTED: no-localization
11// UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME
12
13// XFAIL: availability-fp_to_chars-missing
14
15// <format>
16
17// template<class... Args>
18// string format(const locale& loc, format-string<Args...> fmt, const Args&... args);
19// template<class... Args>
20// wstring format(const locale& loc, wformat-string<Args...> fmt, const Args&... args);
21
22#include <format>
23#include <cassert>
24#include <iostream>
25#include <vector>
26
27#include "test_macros.h"
28#include "format_tests.h"
29#include "string_literal.h"
30#include "test_format_string.h"
31#include "assert_macros.h"
32#include "concat_macros.h"
33
34auto test =
35 []<class CharT, class... Args>(
36 std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) constexpr {
37 std::basic_string<CharT> out = std::format(std::locale(), fmt, std::forward<Args>(args)...);
38 TEST_REQUIRE(
39 out == expected,
40 TEST_WRITE_CONCATENATED(
41 "\nFormat string ", fmt.get(), "\nExpected output ", expected, "\nActual output ", out, '\n'));
42 };
43
44auto test_exception = []<class CharT, class... Args>(std::string_view, std::basic_string_view<CharT>, Args&&...) {
45 // After P2216 most exceptions thrown by std::format become ill-formed.
46 // Therefore this tests does nothing.
47 // A basic ill-formed test is done in format.locale.verify.cpp
48 // The exceptions are tested by other functions that don't use the basic-format-string as fmt argument.
49};
50
51int main(int, char**) {
52 format_tests<char, execution_modus::full>(check: test, check_exception: test_exception);
53
54#ifndef TEST_HAS_NO_WIDE_CHARACTERS
55 format_tests_char_to_wchar_t(check: test);
56 format_tests<wchar_t, execution_modus::full>(check: test, check_exception: test_exception);
57#endif
58
59 return 0;
60}
61

source code of libcxx/test/std/utilities/format/format.functions/format.locale.pass.cpp