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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
//
//===----------------------------------------------------------------------===//
// <unordered_map>
// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
// class Alloc = allocator<pair<const Key, T>>>
// class unordered_map
// iterator erase(const_iterator first, const_iterator last)
#include <unordered_map>
#include <string>
#include <cassert>
#include "test_macros.h"
#include "min_allocator.h"
int main(int, char**)
{
{
typedef std::unordered_map<int, std::string> C;
typedef std::pair<int, std::string> P;
P a[] =
{
P(1, "one"),
P(2, "two"),
P(3, "three"),
P(4, "four"),
P(1, "four"),
P(2, "four"),
};
C c(a, a + sizeof(a)/sizeof(a[0]));
C::const_iterator i = c.find(2);
C::const_iterator j = next(i, 1);
C::iterator k = c.erase(i, i);
assert(k == i);
assert(c.size() == 4);
assert(c.at(1) == "one");
assert(c.at(2) == "two");
assert(c.at(3) == "three");
assert(c.at(4) == "four");
k = c.erase(i, j);
assert(c.size() == 3);
assert(k == j);
assert(c.at(1) == "one");
assert(c.at(3) == "three");
assert(c.at(4) == "four");
k = c.erase(c.cbegin(), c.cend());
assert(k == c.cend());
assert(c.size() == 0);
assert(k == c.end());
}
#if TEST_STD_VER >= 11
{
typedef std::unordered_map<int, std::string, std::hash<int>, std::equal_to<int>,
min_allocator<std::pair<const int, std::string>>> C;
typedef std::pair<int, std::string> P;
P a[] =
{
P(1, "one"),
P(2, "two"),
P(3, "three"),
P(4, "four"),
P(1, "four"),
P(2, "four"),
};
C c(a, a + sizeof(a)/sizeof(a[0]));
C::const_iterator i = c.find(2);
C::const_iterator j = next(i, 1);
C::iterator k = c.erase(i, i);
assert(k == i);
assert(c.size() == 4);
assert(c.at(1) == "one");
assert(c.at(2) == "two");
assert(c.at(3) == "three");
assert(c.at(4) == "four");
k = c.erase(i, j);
assert(c.size() == 3);
assert(k == j);
assert(c.at(1) == "one");
assert(c.at(3) == "three");
assert(c.at(4) == "four");
k = c.erase(c.cbegin(), c.cend());
assert(k == c.cend());
assert(c.size() == 0);
assert(k == c.end());
}
#endif
return 0;
}