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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>
// basic_string(const charT* s, size_type n, const Allocator& a = Allocator()); // constexpr since C++20
#include <string>
#include <stdexcept>
#include <algorithm>
#include <cassert>
#include "test_macros.h"
#include "test_allocator.h"
#include "min_allocator.h"
template <class charT>
TEST_CONSTEXPR_CXX20 void
test(const charT* s, unsigned n)
{
typedef std::basic_string<charT, std::char_traits<charT>, test_allocator<charT> > S;
typedef typename S::traits_type T;
typedef typename S::allocator_type A;
S s2(s, n);
LIBCPP_ASSERT(s2.__invariants());
assert(s2.size() == n);
assert(T::compare(s2.data(), s, n) == 0);
assert(s2.get_allocator() == A());
assert(s2.capacity() >= s2.size());
}
template <class charT, class A>
TEST_CONSTEXPR_CXX20 void
test(const charT* s, unsigned n, const A& a)
{
typedef std::basic_string<charT, std::char_traits<charT>, A> S;
typedef typename S::traits_type T;
S s2(s, n, a);
LIBCPP_ASSERT(s2.__invariants());
assert(s2.size() == n);
assert(T::compare(s2.data(), s, n) == 0);
assert(s2.get_allocator() == a);
assert(s2.capacity() >= s2.size());
}
TEST_CONSTEXPR_CXX20 bool test() {
{
typedef test_allocator<char> A;
test("", 0);
test("", 0, A(2));
test("1", 1);
test("1", 1, A(2));
test("1234567980", 10);
test("1234567980", 10, A(2));
test("123456798012345679801234567980123456798012345679801234567980", 60);
test("123456798012345679801234567980123456798012345679801234567980", 60, A(2));
}
#if TEST_STD_VER >= 11
{
typedef min_allocator<char> A;
test("", 0);
test("", 0, A());
test("1", 1);
test("1", 1, A());
test("1234567980", 10);
test("1234567980", 10, A());
test("123456798012345679801234567980123456798012345679801234567980", 60);
test("123456798012345679801234567980123456798012345679801234567980", 60, A());
}
#endif
#if TEST_STD_VER > 3
{ // LWG 2946
std::string s({"abc", 1});
assert(s.size() == 1);
assert(s == "a");
}
#endif
return true;
}
int main(int, char**)
{
test();
#if TEST_STD_VER > 17
static_assert(test());
#endif
return 0;
}
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