lib/3rdparty/stlport/test/unit/reference_wrapper_test.cpp

   1 #include <functional>
   2
   3 #if !defined(_STLP_NO_EXTENSIONS) && defined(_STLP_USE_BOOST_SUPPORT)
   4
   5 #include <typeinfo>
   6 #include "cppunit/cppunit_proxy.h"
   7
   8 #if !defined (STLPORT) || defined(_STLP_USE_NAMESPACES)
   9 using namespace std;
  10 #endif
  11
  12 class RefWrapperTest :
  13     public CPPUNIT_NS::TestCase
  14 {
  15     CPPUNIT_TEST_SUITE(RefWrapperTest);
  16     CPPUNIT_TEST(ref);
  17     CPPUNIT_TEST(cref);
  18     CPPUNIT_TEST_SUITE_END();
  19
  20   protected:
  21     void ref();
  22     void cref();
  23 };
  24
  25 CPPUNIT_TEST_SUITE_REGISTRATION(RefWrapperTest);
  26
  27 void RefWrapperTest::ref()
  28 {
  29   typedef std::tr1::reference_wrapper<int> rr_type;
  30
  31   CPPUNIT_CHECK( (::boost::is_convertible<rr_type, int&>::value) );
  32   CPPUNIT_CHECK( (::boost::is_same<rr_type::type, int>::value) );
  33
  34   int i = 1;
  35   int j = 2;
  36
  37   rr_type r1 = std::tr1::ref(i);
  38
  39   CPPUNIT_CHECK( r1.get() == 1 );
  40
  41   r1 = std::tr1::ref(j);
  42
  43   CPPUNIT_CHECK( r1.get() == 2 );
  44
  45   i = 3;
  46
  47   CPPUNIT_CHECK( r1.get() == 2 );
  48
  49   j = 4;
  50
  51   CPPUNIT_CHECK( r1.get() == 4 );
  52
  53   r1.get() = 5;
  54
  55   CPPUNIT_CHECK( j == 5 );
  56 }
  57
  58 void RefWrapperTest::cref()
  59 {
  60   typedef std::tr1::reference_wrapper<const int> crr_type;
  61
  62   CPPUNIT_CHECK( (::boost::is_convertible<crr_type, const int&>::value) );
  63   CPPUNIT_CHECK( (::boost::is_same<crr_type::type, const int>::value) );
  64
  65   int i = 1;
  66   int j = 2;
  67
  68   crr_type r1 = std::tr1::cref(i);
  69
  70   CPPUNIT_CHECK( r1.get() == 1 );
  71
  72   r1 = std::tr1::cref(j);
  73
  74   CPPUNIT_CHECK( r1.get() == 2 );
  75
  76   i = 3;
  77
  78   CPPUNIT_CHECK( r1.get() == 2 );
  79
  80   j = 4;
  81
  82   CPPUNIT_CHECK( r1.get() == 4 );
  83 }
  84
  85 #endif /* !_STLP_NO_EXTENSIONS && _STLP_USE_BOOST_SUPPORT */