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libcxx/test/std/strings/basic.string/string.capacity/capacity.pass.cpp

65 lines
1.3 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>
// size_type capacity() const;
#include <string>
#include <cassert>
#include "test_allocator.h"
#include "min_allocator.h"
#include "test_macros.h"
template <class S>
void
test(S s)
{
S::allocator_type::throw_after = 0;
#ifndef TEST_HAS_NO_EXCEPTIONS
try
#endif
{
while (s.size() < s.capacity())
s.push_back(typename S::value_type());
assert(s.size() == s.capacity());
}
#ifndef TEST_HAS_NO_EXCEPTIONS
catch (...)
{
assert(false);
}
#endif
S::allocator_type::throw_after = INT_MAX;
}
int main()
{
{
typedef std::basic_string<char, std::char_traits<char>, test_allocator<char> > S;
S s;
test(s);
s.assign(10, 'a');
s.erase(5);
test(s);
s.assign(100, 'a');
s.erase(50);
test(s);
}
#if TEST_STD_VER >= 11
{
typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
S s;
assert(s.capacity() > 0);
}
#endif
}