1 //===----------------------------------------------------------------------===//
2 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
3 // See https://llvm.org/LICENSE.txt for license information.
4 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
5 //
6 //===----------------------------------------------------------------------===//
7
8 // UNSUPPORTED: c++03, c++11, c++14, c++17
9 // UNSUPPORTED: no-localization
10 // UNSUPPORTED: libcpp-has-no-incomplete-format
11 // TODO FMT Evaluate gcc-12 status
12 // UNSUPPORTED: gcc-12
13 // TODO FMT Investigate AppleClang ICE
14 // UNSUPPORTED: apple-clang-13
15
16 // <format>
17
18 // string vformat(const locale& loc, string_view fmt, format_args args);
19 // wstring vformat(const locale& loc, wstring_view fmt, wformat_args args);
20
21 #include <format>
22 #include <cassert>
23 #include <vector>
24
25 #include "test_macros.h"
26 #include "format_tests.h"
27 #include "string_literal.h"
28
29 auto test = []<string_literal fmt, class CharT, class... Args>(std::basic_string_view<CharT> expected,
30 const Args&... args) constexpr {
31 std::basic_string<CharT> out =
32 std::vformat(std::locale(), fmt.template sv<CharT>(), std::make_format_args<context_t<CharT>>(args...));
33 assert(out == expected);
34 };
35
36 auto test_exception = []<class CharT, class... Args>(std::string_view what, std::basic_string_view<CharT> fmt,
37 const Args&... args) {
38 #ifndef TEST_HAS_NO_EXCEPTIONS
39 try {
40 (void)std::vformat(std::locale(), fmt, std::make_format_args<context_t<CharT>>(args...));
41 assert(false);
42 } catch ([[maybe_unused]] const std::format_error& e) {
43 LIBCPP_ASSERT(e.what() == what);
44 return;
45 }
46 assert(false);
47 #endif
48 (void)what;
49 (void)fmt;
50 (void)sizeof...(args);
51 };
52
main(int,char **)53 int main(int, char**) {
54 format_tests<char>(test, test_exception);
55
56 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
57 format_tests_char_to_wchar_t(test);
58 format_tests<wchar_t>(test, test_exception);
59 #endif
60
61 return 0;
62 }
63