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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
//
//===----------------------------------------------------------------------===//
// <vector>
// reference operator[](size_type __i);
// const_reference operator[](size_type __i) const;
//
// reference at(size_type __i);
// const_reference at(size_type __i) const;
//
// reference front();
// const_reference front() const;
//
// reference back();
// const_reference back() const;
// libc++ marks these as 'noexcept' (except 'at')
#include <vector>
#include <cassert>
#include <stdexcept>
#include "min_allocator.h"
#include "test_macros.h"
template <class C>
TEST_CONSTEXPR_CXX20 C make(int size, int start) {
C c;
for (int i = 0; i < size; ++i)
c.push_back(start + i);
return c;
}
template <class Vector>
TEST_CONSTEXPR_CXX20 void test_get_basic(Vector& c, int start_value) {
const int n = static_cast<int>(c.size());
for (int i = 0; i < n; ++i)
assert(c[i] == start_value + i);
for (int i = 0; i < n; ++i)
assert(c.at(i) == start_value + i);
#ifndef TEST_HAS_NO_EXCEPTIONS
if (!TEST_IS_CONSTANT_EVALUATED) {
try {
TEST_IGNORE_NODISCARD c.at(n);
assert(false);
} catch (const std::out_of_range&) {}
}
#endif
assert(c.front() == start_value);
assert(c.back() == start_value + n - 1);
}
template <class Vector>
TEST_CONSTEXPR_CXX20 void test_get() {
int start_value = 35;
Vector c = make<Vector>(10, start_value);
const Vector& cc = c;
test_get_basic(c, start_value);
test_get_basic(cc, start_value);
}
template <class Vector>
TEST_CONSTEXPR_CXX20 void test_set() {
int start_value = 35;
const int n = 10;
Vector c = make<Vector>(n, start_value);
for (int i = 0; i < n; ++i) {
assert(c[i] == start_value + i);
c[i] = start_value + i + 1;
assert(c[i] == start_value + i + 1);
}
for (int i = 0; i < n; ++i) {
assert(c.at(i) == start_value + i + 1);
c.at(i) = start_value + i + 2;
assert(c.at(i) == start_value + i + 2);
}
assert(c.front() == start_value + 2);
c.front() = start_value + 3;
assert(c.front() == start_value + 3);
assert(c.back() == start_value + n + 1);
c.back() = start_value + n + 2;
assert(c.back() == start_value + n + 2);
}
template <class Vector>
TEST_CONSTEXPR_CXX20 void test() {
test_get<Vector>();
test_set<Vector>();
Vector c;
const Vector& cc = c;
ASSERT_SAME_TYPE(typename Vector::reference, decltype(c[0]));
ASSERT_SAME_TYPE(typename Vector::const_reference, decltype(cc[0]));
ASSERT_SAME_TYPE(typename Vector::reference, decltype(c.at(0)));
ASSERT_SAME_TYPE(typename Vector::const_reference, decltype(cc.at(0)));
ASSERT_SAME_TYPE(typename Vector::reference, decltype(c.front()));
ASSERT_SAME_TYPE(typename Vector::const_reference, decltype(cc.front()));
ASSERT_SAME_TYPE(typename Vector::reference, decltype(c.back()));
ASSERT_SAME_TYPE(typename Vector::const_reference, decltype(cc.back()));
}
TEST_CONSTEXPR_CXX20 bool tests() {
test<std::vector<int> >();
#if TEST_STD_VER >= 11
test<std::vector<int, min_allocator<int> > >();
#endif
return true;
}
int main(int, char**) {
tests();
#if TEST_STD_VER > 17
static_assert(tests());
#endif
return 0;
}
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