third_party/llvm-project/libcxx/test/std/containers/sequences/vector/vector.cons/construct_size.pass.cpp

//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

// <vector>

// explicit vector(size_type n);
// explicit vector(size_type n, const Allocator& alloc = Allocator());

#include <vector>
#include <cassert>

#include "test_macros.h"
#include "DefaultOnly.h"
#include "min_allocator.h"
#include "test_allocator.h"
#include "asan_testing.h"

template <class C>
TEST_CONSTEXPR_CXX20
void test(typename C::size_type n,
          typename C::allocator_type const& a = typename C::allocator_type())
{
    (void)a;
    // Test without a custom allocator
    {
        C c(n);
        LIBCPP_ASSERT(c.__invariants());
        assert(c.size() == n);
        assert(c.get_allocator() == typename C::allocator_type());
        LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
#if TEST_STD_VER >= 11
        for (typename C::const_iterator i = c.cbegin(), e = c.cend(); i != e; ++i)
            assert(*i == typename C::value_type());
#endif
    }

    // Test with a custom allocator
#if TEST_STD_VER >= 14
    {
        C c(n, a);
        LIBCPP_ASSERT(c.__invariants());
        assert(c.size() == n);
        assert(c.get_allocator() == a);
        LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
        for (typename C::const_iterator i = c.cbegin(), e = c.cend(); i != e; ++i)
            assert(*i == typename C::value_type());
    }
#endif
}

TEST_CONSTEXPR_CXX20 bool tests() {
    test<std::vector<int> >(0);
    test<std::vector<int> >(50);
#if TEST_STD_VER >= 11
    test<std::vector<int, min_allocator<int>>>(0);
    test<std::vector<int, min_allocator<int>>>(50);
    test<std::vector<int, safe_allocator<int>>>(0);
    test<std::vector<int, safe_allocator<int>>>(50);
#endif

    return true;
}

int main(int, char**) {
    tests();
#if TEST_STD_VER > 17
    static_assert(tests());
#endif
    test<std::vector<DefaultOnly> >(0);
    test<std::vector<DefaultOnly> >(500);
    assert(DefaultOnly::count == 0);

#if TEST_STD_VER >= 11
    test<std::vector<DefaultOnly, min_allocator<DefaultOnly>>>(0);
    test<std::vector<DefaultOnly, min_allocator<DefaultOnly>>>(500);
    test<std::vector<DefaultOnly, safe_allocator<DefaultOnly>>>(0);
    test<std::vector<DefaultOnly, safe_allocator<DefaultOnly>>>(500);
    test<std::vector<DefaultOnly, test_allocator<DefaultOnly>>>(0, test_allocator<DefaultOnly>(23));
    test<std::vector<DefaultOnly, test_allocator<DefaultOnly>>>(100, test_allocator<DefaultOnly>(23));
    assert(DefaultOnly::count == 0);
#endif

    return 0;
}