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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// <string>
// void resize(size_type n, charT c); // constexpr since C++20
#include <string>
#include <stdexcept>
#include <cassert>
#include "test_macros.h"
#include "min_allocator.h"
template <class S>
TEST_CONSTEXPR_CXX20 void
test(S s, typename S::size_type n, typename S::value_type c, S expected)
{
if (n <= s.max_size())
{
s.resize(n, c);
LIBCPP_ASSERT(s.__invariants());
assert(s == expected);
}
#ifndef TEST_HAS_NO_EXCEPTIONS
else if (!TEST_IS_CONSTANT_EVALUATED)
{
try
{
s.resize(n, c);
assert(false);
}
catch (std::length_error&)
{
assert(n > s.max_size());
}
}
#endif
}
template <class S>
TEST_CONSTEXPR_CXX20 void test_string() {
test(S(), 0, 'a', S());
test(S(), 1, 'a', S("a"));
test(S(), 10, 'a', S(10, 'a'));
test(S(), 100, 'a', S(100, 'a'));
test(S("12345"), 0, 'a', S());
test(S("12345"), 2, 'a', S("12"));
test(S("12345"), 5, 'a', S("12345"));
test(S("12345"), 15, 'a', S("12345aaaaaaaaaa"));
test(S("12345678901234567890123456789012345678901234567890"), 0, 'a', S());
test(S("12345678901234567890123456789012345678901234567890"), 10, 'a',
S("1234567890"));
test(S("12345678901234567890123456789012345678901234567890"), 50, 'a',
S("12345678901234567890123456789012345678901234567890"));
test(S("12345678901234567890123456789012345678901234567890"), 60, 'a',
S("12345678901234567890123456789012345678901234567890aaaaaaaaaa"));
test(S(), S::npos, 'a', S("not going to happen"));
}
TEST_CONSTEXPR_CXX20 bool test() {
test_string<std::string>();
#if TEST_STD_VER >= 11
test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>();
#endif
return true;
}
int main(int, char**)
{
test();
#if TEST_STD_VER > 17
static_assert(test());
#endif
return 0;
}
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