is_empty.cc

来自「Mac OS X 10.4.9 for x86 Source Code gcc」· CC 代码 · 共 74 行

// 2005-01-28  Paolo Carlini  <[e-mail]>
//
// Copyright (C) 2005 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.

// 4.5.3 Type properties

#include <tr1/type_traits>
#include <testsuite_hooks.h>
#include <testsuite_tr1.h>

class EmptyClassOne
{ typedef int type; };

class EmptyClassTwo
{ static int data; };

class EmptyClassThree
{ int f(); };

class NonEmptyClassOne
{ int data; };

class NonEmptyClassTwo
{ virtual int f(); };

void test01()
{
  bool test __attribute__((unused)) = true;
  using std::tr1::is_empty;
  using namespace __gnu_test;

  // Positive tests.
  VERIFY( (test_category<is_empty, ClassType>(true)) );
  VERIFY( (test_category<is_empty, EmptyClassOne>(true)) );
  VERIFY( (test_category<is_empty, EmptyClassTwo>(true)) );
  VERIFY( (test_category<is_empty, EmptyClassThree>(true)) );

  // Negative tests.
  VERIFY( (test_category<is_empty, void>(false)) );
  VERIFY( (test_category<is_empty, float>(false)) );
  VERIFY( (test_category<is_empty, int[4]>(false)) );
  VERIFY( (test_category<is_empty, int*>(false)) );
  VERIFY( (test_category<is_empty, int&>(false)) );
  VERIFY( (test_category<is_empty, int (ClassType::*)>(false)) );
  VERIFY( (test_category<is_empty, EnumType>(false)) );
  VERIFY( (test_category<is_empty, int (int)>(false)) );

  VERIFY( (test_category<is_empty, AbstractClass>(false)) );
  VERIFY( (test_category<is_empty, NonEmptyClassOne>(false)) );
  VERIFY( (test_category<is_empty, NonEmptyClassTwo>(false)) );  
}

int main()
{
  test01();
  return 0;
}