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99 lines
3.0 KiB
C++
99 lines
3.0 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <array>
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// UNSUPPORTED: c++98, c++03, c++11, c++14
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// UNSUPPORTED: libcpp-no-deduction-guides
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// template <class InputIterator, class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>>
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// deque(InputIterator, InputIterator, Allocator = Allocator())
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// -> deque<typename iterator_traits<InputIterator>::value_type, Allocator>;
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//
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#include <deque>
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#include <iterator>
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#include <cassert>
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#include <cstddef>
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#include <climits> // INT_MAX
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#include "test_macros.h"
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#include "test_iterators.h"
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#include "test_allocator.h"
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struct A {};
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int main()
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{
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// Test the explicit deduction guides
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{
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const int arr[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
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std::deque deq(std::begin(arr), std::end(arr));
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static_assert(std::is_same_v<decltype(deq), std::deque<int>>, "");
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assert(std::equal(deq.begin(), deq.end(), std::begin(arr), std::end(arr)));
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}
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{
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const long arr[] = {INT_MAX, 1L, 2L, 3L };
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std::deque deq(std::begin(arr), std::end(arr), std::allocator<long>());
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static_assert(std::is_same_v<decltype(deq)::value_type, long>, "");
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assert(deq.size() == 4);
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assert(deq[0] == INT_MAX);
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assert(deq[1] == 1L);
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assert(deq[2] == 2L);
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}
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// Test the implicit deduction guides
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{
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// We don't expect this one to work.
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// std::deque deq(std::allocator<int>()); // deque (allocator &)
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}
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{
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std::deque deq(1, A{}); // deque (size_type, T)
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static_assert(std::is_same_v<decltype(deq)::value_type, A>, "");
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static_assert(std::is_same_v<decltype(deq)::allocator_type, std::allocator<A>>, "");
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assert(deq.size() == 1);
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}
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{
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std::deque deq(1, A{}, test_allocator<A>()); // deque (size_type, T, allocator)
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static_assert(std::is_same_v<decltype(deq)::value_type, A>, "");
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static_assert(std::is_same_v<decltype(deq)::allocator_type, test_allocator<A>>, "");
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assert(deq.size() == 1);
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}
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{
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std::deque deq{1U, 2U, 3U, 4U, 5U}; // deque(initializer-list)
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static_assert(std::is_same_v<decltype(deq)::value_type, unsigned>, "");
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assert(deq.size() == 5);
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assert(deq[2] == 3U);
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}
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{
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std::deque deq({1.0, 2.0, 3.0, 4.0}, test_allocator<double>()); // deque(initializer-list, allocator)
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static_assert(std::is_same_v<decltype(deq)::value_type, double>, "");
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static_assert(std::is_same_v<decltype(deq)::allocator_type, test_allocator<double>>, "");
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assert(deq.size() == 4);
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assert(deq[3] == 4.0);
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}
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{
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std::deque<long double> source;
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std::deque deq(source); // deque(deque &)
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static_assert(std::is_same_v<decltype(deq)::value_type, long double>, "");
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static_assert(std::is_same_v<decltype(deq)::allocator_type, std::allocator<long double>>, "");
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assert(deq.size() == 0);
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}
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}
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