gcc/libstdc++-v3/testsuite/21_strings/capacity.cc

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// 1999-05-11 bkoz
// Copyright (C) 1999 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// 21.3.3 string capacity
#include <string>
#include <cstdio>
#include <debug_assert.h>
template<typename T>
struct A { };
template<typename T>
bool
operator==(const A<T>& a, const A<T>& b) { }
template<typename T>
bool
operator<(const A<T>& a, const A<T>& b) { }
struct B { };
bool test01()
{
// 1 POD types : resize, capacity, reserve
bool test = true;
std::string str01;
typedef std::string::size_type size_type_s;
size_type_s sz01 = str01.capacity();
str01.reserve(100);
size_type_s sz02 = str01.capacity();
VERIFY( sz02 >= sz01 );
VERIFY( sz02 >= 100 );
str01.reserve();
sz01 = str01.capacity();
VERIFY( sz01 >= 0 );
sz01 = str01.size() + 5;
str01.resize(sz01);
sz02 = str01.size();
VERIFY( sz01 == sz02 );
sz01 = str01.size() - 5;
str01.resize(sz01);
sz02 = str01.size();
VERIFY( sz01 == sz02 );
std::string str05(30, 'q');
std::string str06 = str05;
str05 = str06 + str05;
VERIFY( str05.capacity() >= str05.size() );
VERIFY( str06.capacity() >= str06.size() );
// 2 non POD types : resize, capacity, reserve
std::basic_string< A<B> > str02;
typedef std::basic_string< A<B> >::size_type size_type_o;
size_type_o sz03;
size_type_o sz04;
sz03 = str02.capacity();
str02.reserve(100);
sz04 = str02.capacity();
VERIFY( sz04 >= sz03 );
VERIFY( sz04 >= 100 );
str02.reserve();
sz03 = str02.capacity();
VERIFY( sz03 >= 0 );
sz03 = str02.size() + 5;
str02.resize(sz03);
sz04 = str02.size();
VERIFY( sz03 == sz04 );
sz03 = str02.size() - 5;
str02.resize(sz03);
sz04 = str02.size();
VERIFY( sz03 == sz04 );
A<B> inst_obj;
std::basic_string<A<B> > str07(30, inst_obj);
std::basic_string<A<B> > str08 = str07;
str07 = str08 + str07;
VERIFY( str07.capacity() >= str07.size() );
VERIFY( str08.capacity() >= str08.size() );
// 3 POD types: size, length, max_size, clear(), empty()
bool b01;
std::string str011;
b01 = str01.empty();
VERIFY( b01 == true );
sz01 = str01.size();
sz02 = str01.length();
VERIFY( sz01 == sz02 );
str01.c_str();
sz01 = str01.size();
sz02 = str01.length();
VERIFY( sz01 == sz02 );
sz01 = str01.length();
str01.c_str();
str011 = str01 + "_addendum_";
str01.c_str();
sz02 = str01.length();
VERIFY( sz01 == sz02 );
sz02 = str011.length();
VERIFY( sz02 > sz01 );
// trickster allocator (__USE_MALLOC, luke) issues involved with these:
std::string str3 = "8-chars_8-chars_";
const char* p3 = str3.c_str();
std::string str4 = str3 + "7-chars";
const char* p4 = str3.c_str();
sz01 = str01.size();
sz02 = str01.max_size();
VERIFY( sz02 >= sz01 );
sz01 = str01.size();
str01.clear();
b01 = str01.empty();
VERIFY( b01 == true );
sz02 = str01.size();
VERIFY( sz01 >= sz02 );
// 4 non-POD types: size, length, max_size, clear(), empty()
b01 = str02.empty();
VERIFY( b01 == true );
sz03 = str02.size();
sz04 = str02.length();
VERIFY( sz03 == sz04 );
str02.c_str();
sz03 = str02.size();
sz04 = str02.length();
VERIFY( sz03 == sz04 );
sz03 = str02.max_size();
VERIFY( sz03 >= sz04 );
sz03 = str02.size();
str02.clear();
b01 = str02.empty();
VERIFY( b01 == true );
sz04 = str02.size();
VERIFY( sz03 >= sz04 );
#ifdef DEBUG_ASSERT
assert(test);
#endif
return test;
}
int main()
{
test01();
return 0;
}