ceph/src/boost/libs/signals/test/trackable_test.cpp

   1 // Boost.Signals library
   2
   3 // Copyright Douglas Gregor 2001-2006. Use, modification and
   4 // distribution is subject to the Boost Software License, Version
   5 // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt)
   7
   8 // For more information, see http://www.boost.org
   9
  10 #include <boost/test/minimal.hpp>
  11 #include <boost/signal.hpp>
  12 #include <boost/bind.hpp>
  13
  14 struct short_lived : public boost::BOOST_SIGNALS_NAMESPACE::trackable {
  15   ~short_lived() {}
  16 };
  17
  18 struct swallow {
  19   template<typename T> int operator()(const T*, int i) { return i; }
  20 };
  21
  22 template<typename T>
  23 struct max_or_default {
  24   typedef T result_type;
  25
  26   template<typename InputIterator>
  27   T operator()(InputIterator first, InputIterator last) const
  28   {
  29     if (first == last)
  30       return T();
  31
  32     T max = *first++;
  33     for (; first != last; ++first)
  34       max = (*first > max)? *first : max;
  35
  36     return max;
  37   }
  38 };
  39
  40 int test_main(int, char*[])
  41 {
  42   typedef boost::signal1<int, int, max_or_default<int> > sig_type;
  43   sig_type s1;
  44
  45   // Test auto-disconnection
  46   BOOST_CHECK(s1(5) == 0);
  47   {
  48     short_lived shorty;
  49     s1.connect(boost::bind<int>(swallow(), &shorty, _1));
  50     BOOST_CHECK(s1(5) == 5);
  51   }
  52   BOOST_CHECK(s1(5) == 0);
  53
  54   // Test auto-disconnection of slot before signal connection
  55   {
  56     short_lived* shorty = new short_lived();
  57
  58     sig_type::slot_type slot(boost::bind<int>(swallow(), shorty, _1));
  59     delete shorty;
  60
  61     BOOST_CHECK(s1(5) == 0);
  62   }
  63
  64   return 0;
  65 }