third_party/boost/move/test/unique_ptr_observers.cpp

//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Howard Hinnant 2009
// (C) Copyright Ion Gaztanaga 2014-2014.
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/move for documentation.
//
//////////////////////////////////////////////////////////////////////////////
#include <boost/move/utility_core.hpp>
#include <boost/move/unique_ptr.hpp>
#include <boost/static_assert.hpp>
#include <boost/core/lightweight_test.hpp>

//////////////////////////////////////////////
//
// The initial implementation of these tests
// was written by Howard Hinnant. 
//
// These test were later refactored grouping
// and porting them to Boost.Move.
//
// Many thanks to Howard for releasing his C++03
// unique_ptr implementation with such detailed
// test cases.
//
//////////////////////////////////////////////

#include "unique_ptr_test_utils_beg.hpp"

namespace bml = ::boost::movelib;

////////////////////////////////
//   unique_ptr_observers_dereference
////////////////////////////////

namespace unique_ptr_observers_dereference{

void test()
{
   //Single unique_ptr
   {
   bml::unique_ptr<int> p(new int(3));
   BOOST_TEST(*p == 3);
   }
   //Unbounded array unique_ptr
   {
   int *pi = new int[2];
   pi[0] = 3;
   pi[1] = 4;
   bml::unique_ptr<int[]> p(pi);
   BOOST_TEST(p[0] == 3);
   BOOST_TEST(p[1] == 4);
   }
   //Bounded array unique_ptr
   {
   int *pi = new int[2];
   pi[0] = 3;
   pi[1] = 4;
   bml::unique_ptr<int[2]> p(pi);
   BOOST_TEST(p[0] == 3);
   BOOST_TEST(p[1] == 4);
   }
}

}  //namespace unique_ptr_observers_dereference{

////////////////////////////////
//   unique_ptr_observers_dereference
////////////////////////////////

namespace unique_ptr_observers_explicit_bool{

void test()
{
   //Single unique_ptr
   {
   bml::unique_ptr<int> p(new int(3));
   if (p)
      ;
   else
      BOOST_TEST(false);
   if (!p)
      BOOST_TEST(false);
   }
   {
   bml::unique_ptr<int> p;
   if (!p)
      ;
   else
      BOOST_TEST(false);
   if (p)
      BOOST_TEST(false);
   }
   //Unbounded array unique_ptr
   {
   bml::unique_ptr<int[]> p(new int[2]);
   if (p)
      ;
   else
      BOOST_TEST(false);
   if (!p)
      BOOST_TEST(false);
   }
   {
   bml::unique_ptr<int[]> p;
   if (!p)
      ;
   else
      BOOST_TEST(false);
   if (p)
      BOOST_TEST(false);
   }
   //Bounded array unique_ptr
   {
   bml::unique_ptr<int[2]> p(new int[2]);
   if (p)
      ;
   else
      BOOST_TEST(false);
   if (!p)
      BOOST_TEST(false);
   }
   {
   bml::unique_ptr<int[2]> p;
   if (!p)
      ;
   else
      BOOST_TEST(false);
   if (p)
      BOOST_TEST(false);
   }
}

}  //namespace unique_ptr_observers_explicit_bool{

////////////////////////////////
//   unique_ptr_observers_get
////////////////////////////////

namespace unique_ptr_observers_get{

void test()
{
   //Single unique_ptr
   {
   int* p = new int;
   bml::unique_ptr<int> s(p);
   BOOST_TEST(s.get() == p);
   }
   //Unbounded array unique_ptr
   {
   int* p = new int[2];
   bml::unique_ptr<int[]> s(p);
   BOOST_TEST(s.get() == p);
   }
   {
   int* p = new int[2];
   bml::unique_ptr<int[2]> s(p);
   BOOST_TEST(s.get() == p);
   }
   //Bounded array unique_ptr
   {
   int *pi = new int[2];
   pi[0] = 3;
   pi[1] = 4;
   bml::unique_ptr<int[2]> p(pi);
   BOOST_TEST(p[0] == 3);
   BOOST_TEST(p[1] == 4);
   }
}

}  //namespace unique_ptr_observers_get{

////////////////////////////////
//   unique_ptr_observers_get_deleter
////////////////////////////////

namespace unique_ptr_observers_get_deleter{

struct Deleter
{
   void operator()(void*) {}

   int test() {return 5;}
   int test() const {return 6;}
};

void test()
{
   //Single unique_ptr
   {
   bml::unique_ptr<int, Deleter> p;
   BOOST_TEST(p.get_deleter().test() == 5);
   }
   {
   const bml::unique_ptr<int, Deleter> p;
   BOOST_TEST(p.get_deleter().test() == 6);
   }
   //Unbounded array unique_ptr
   {
   bml::unique_ptr<int[], Deleter> p;
   BOOST_TEST(p.get_deleter().test() == 5);
   }
   {
   const bml::unique_ptr<int[], Deleter> p;
   BOOST_TEST(p.get_deleter().test() == 6);
   }
   //Bounded array unique_ptr
   {
   bml::unique_ptr<int[2], Deleter> p;
   BOOST_TEST(p.get_deleter().test() == 5);
   }
   {
   const bml::unique_ptr<int[2], Deleter> p;
   BOOST_TEST(p.get_deleter().test() == 6);
   }
}

}  //namespace unique_ptr_observers_get_deleter{

////////////////////////////////
//   unique_ptr_observers_op_arrow
////////////////////////////////

namespace unique_ptr_observers_op_arrow{

void test()
{
   //Single unique_ptr
   {
   bml::unique_ptr<A> p(new A);
   BOOST_TEST(p->state_ == 999);
   }
}

}  //namespace unique_ptr_observers_op_arrow{


namespace unique_ptr_observers_op_index{

void test()
{
   //Unbounded array unique_ptr
   {
   A *pa = new A[2];
   //pa[0] is left default constructed
   pa[1].set(888);
   bml::unique_ptr<A[]> p(pa);
   BOOST_TEST(p[0].state_ == 999);
   BOOST_TEST(p[1].state_ == 888);
   }
   //Bounded array unique_ptr
   {
   A *pa = new A[2];
   //pa[0] is left default constructed
   pa[1].set(888);
   bml::unique_ptr<A[2]> p(pa);
   BOOST_TEST(p[0].state_ == 999);
   BOOST_TEST(p[1].state_ == 888);
   }
}

}  //namespace unique_ptr_observers_op_index{

////////////////////////////////
//             main
////////////////////////////////
int main()
{
   //Observers
   unique_ptr_observers_dereference::test();
   unique_ptr_observers_explicit_bool::test();
   unique_ptr_observers_get::test();
   unique_ptr_observers_get_deleter::test();
   unique_ptr_observers_op_arrow::test();
   unique_ptr_observers_op_index::test();

   //Test results
   return boost::report_errors();

}

#include "unique_ptr_test_utils_end.hpp"