122 lines
3.9 KiB
C++
122 lines
3.9 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// <vector>
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// reference operator[](size_type __i);
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// const_reference operator[](size_type __i) const;
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//
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// reference at(size_type __i);
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// const_reference at(size_type __i) const;
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//
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// reference front();
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// const_reference front() const;
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//
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// reference back();
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// const_reference back() const;
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// libc++ marks these as 'noexcept' (except 'at')
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#include <vector>
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#include <cassert>
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#include "min_allocator.h"
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#include "test_macros.h"
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template <class C>
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C
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make(int size, int start = 0)
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{
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C c;
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for (int i = 0; i < size; ++i)
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c.push_back(start + i);
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return c;
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}
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int main(int, char**)
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{
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{
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typedef std::vector<int> C;
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C c = make<C>(10);
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LIBCPP_ASSERT_NOEXCEPT(c[0]);
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LIBCPP_ASSERT_NOEXCEPT(c.front());
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LIBCPP_ASSERT_NOEXCEPT(c.back());
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// at() is NOT noexcept
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ASSERT_SAME_TYPE(C::reference, decltype(c[0]));
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ASSERT_SAME_TYPE(C::reference, decltype(c.at(0)));
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ASSERT_SAME_TYPE(C::reference, decltype(c.front()));
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ASSERT_SAME_TYPE(C::reference, decltype(c.back()));
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for (int i = 0; i < 10; ++i)
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assert(c[i] == i);
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for (int i = 0; i < 10; ++i)
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assert(c.at(i) == i);
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assert(c.front() == 0);
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assert(c.back() == 9);
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}
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{
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typedef std::vector<int> C;
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const int N = 5;
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const C c = make<C>(10, N);
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LIBCPP_ASSERT_NOEXCEPT(c[0]);
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LIBCPP_ASSERT_NOEXCEPT(c.front());
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LIBCPP_ASSERT_NOEXCEPT(c.back());
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// at() is NOT noexcept
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ASSERT_SAME_TYPE(C::const_reference, decltype(c[0]));
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ASSERT_SAME_TYPE(C::const_reference, decltype(c.at(0)));
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ASSERT_SAME_TYPE(C::const_reference, decltype(c.front()));
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ASSERT_SAME_TYPE(C::const_reference, decltype(c.back()));
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for (int i = 0; i < 10; ++i)
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assert(c[i] == N + i);
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for (int i = 0; i < 10; ++i)
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assert(c.at(i) == N + i);
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assert(c.front() == N);
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assert(c.back() == N + 9);
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}
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#if TEST_STD_VER >= 11
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{
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typedef std::vector<int, min_allocator<int>> C;
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const int N = 34;
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C c = make<C>(10, N);
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LIBCPP_ASSERT_NOEXCEPT(c[0]);
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LIBCPP_ASSERT_NOEXCEPT(c.front());
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LIBCPP_ASSERT_NOEXCEPT(c.back());
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// at() is NOT noexcept
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ASSERT_SAME_TYPE(C::reference, decltype(c[0]));
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ASSERT_SAME_TYPE(C::reference, decltype(c.at(0)));
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ASSERT_SAME_TYPE(C::reference, decltype(c.front()));
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ASSERT_SAME_TYPE(C::reference, decltype(c.back()));
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for (int i = 0; i < 10; ++i)
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assert(c[i] == N + i);
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for (int i = 0; i < 10; ++i)
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assert(c.at(i) == N + i);
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assert(c.front() == N);
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assert(c.back() == N + 9);
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}
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{
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typedef std::vector<int, min_allocator<int>> C;
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const int N = 23;
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const C c = make<C>(10, N);
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LIBCPP_ASSERT_NOEXCEPT(c[0]);
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LIBCPP_ASSERT_NOEXCEPT(c.front());
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LIBCPP_ASSERT_NOEXCEPT(c.back());
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// at() is NOT noexcept
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ASSERT_SAME_TYPE(C::const_reference, decltype(c[0]));
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ASSERT_SAME_TYPE(C::const_reference, decltype(c.at(0)));
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ASSERT_SAME_TYPE(C::const_reference, decltype(c.front()));
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ASSERT_SAME_TYPE(C::const_reference, decltype(c.back()));
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for (int i = 0; i < 10; ++i)
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assert(c[i] == N + i);
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for (int i = 0; i < 10; ++i)
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assert(c.at(i) == N + i);
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assert(c.front() == N);
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assert(c.back() == N + 9);
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}
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#endif
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return 0;
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}
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