Run DCE after a LoopFlatten test to reduce spurious output [nfc]
[llvm-project.git] / libcxx / test / std / utilities / format / format.functions / format.pass.cpp
blob5fe210e582d10a88d05cf79a0fa77a6c2f442899
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 //===----------------------------------------------------------------------===//
8 // UNSUPPORTED: c++03, c++11, c++14, c++17
9 // UNSUPPORTED: GCC-ALWAYS_INLINE-FIXME
11 // XFAIL: availability-fp_to_chars-missing
13 // Note this formatter shows additional information when tests are failing.
14 // This aids the development. Since other formatters fail in the same fashion
15 // they don't have this additional output.
17 // <format>
19 // template<class... Args>
20 // string format(format-string<Args...> fmt, const Args&... args);
21 // template<class... Args>
22 // wstring format(wformat-string<Args...> fmt, const Args&... args);
24 #include <format>
25 #include <cassert>
26 #include <vector>
28 #include "test_macros.h"
29 #include "format_tests.h"
30 #include "string_literal.h"
31 #include "test_format_string.h"
32 #include "assert_macros.h"
33 #include "concat_macros.h"
35 auto test =
36 []<class CharT, class... Args>(
37 std::basic_string_view<CharT> expected, test_format_string<CharT, Args...> fmt, Args&&... args) constexpr {
38 std::basic_string<CharT> out = std::format(fmt, std::forward<Args>(args)...);
39 TEST_REQUIRE(
40 out == expected,
41 TEST_WRITE_CONCATENATED(
42 "\nFormat string ", fmt.get(), "\nExpected output ", expected, "\nActual output ", out, '\n'));
45 auto test_exception = []<class CharT, class... Args>(std::string_view, std::basic_string_view<CharT>, Args&&...) {
46 // After P2216 most exceptions thrown by std::format become ill-formed.
47 // Therefore this tests does nothing.
48 // A basic ill-formed test is done in format.verify.cpp
49 // The exceptions are tested by other functions that don't use the basic-format-string as fmt argument.
52 int main(int, char**) {
53 format_tests<char, execution_modus::full>(test, test_exception);
55 #ifndef TEST_HAS_NO_WIDE_CHARACTERS
56 format_tests_char_to_wchar_t(test);
57 format_tests<wchar_t, execution_modus::full>(test, test_exception);
58 #endif
60 return 0;