b64f8b07c1
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119395 91177308-0d34-0410-b5e6-96231b3b80d8
82 lines
1.5 KiB
C++
82 lines
1.5 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <string>
|
|
|
|
// void reserve(size_type res_arg=0);
|
|
|
|
#include <string>
|
|
#include <stdexcept>
|
|
#include <cassert>
|
|
|
|
template <class S>
|
|
void
|
|
test(S s)
|
|
{
|
|
typename S::size_type old_cap = s.capacity();
|
|
S s0 = s;
|
|
s.reserve();
|
|
assert(s.__invariants());
|
|
assert(s == s0);
|
|
assert(s.capacity() <= old_cap);
|
|
assert(s.capacity() >= s.size());
|
|
}
|
|
|
|
template <class S>
|
|
void
|
|
test(S s, typename S::size_type res_arg)
|
|
{
|
|
typename S::size_type old_cap = s.capacity();
|
|
S s0 = s;
|
|
try
|
|
{
|
|
s.reserve(res_arg);
|
|
assert(res_arg <= s.max_size());
|
|
assert(s == s0);
|
|
assert(s.capacity() >= res_arg);
|
|
assert(s.capacity() >= s.size());
|
|
}
|
|
catch (std::length_error&)
|
|
{
|
|
assert(res_arg > s.max_size());
|
|
}
|
|
}
|
|
|
|
int main()
|
|
{
|
|
typedef std::string S;
|
|
{
|
|
S s;
|
|
test(s);
|
|
|
|
s.assign(10, 'a');
|
|
s.erase(5);
|
|
test(s);
|
|
|
|
s.assign(100, 'a');
|
|
s.erase(50);
|
|
test(s);
|
|
}
|
|
{
|
|
S s;
|
|
test(s, 5);
|
|
test(s, 10);
|
|
test(s, 50);
|
|
}
|
|
{
|
|
S s(100, 'a');
|
|
s.erase(50);
|
|
test(s, 5);
|
|
test(s, 10);
|
|
test(s, 50);
|
|
test(s, 100);
|
|
test(s, S::npos);
|
|
}
|
|
}
|