libs/pbd/test/signals_test.cc

   1 #include "signals_test.h"
   2 #include "pbd/signals.h"
   3
   4 using namespace std;
   5
   6 CPPUNIT_TEST_SUITE_REGISTRATION (SignalsTest);
   7
   8 void
   9 SignalsTest::setUp ()
  10 {
  11         if (!Glib::thread_supported ()) {
  12                 Glib::thread_init ();
  13         }
  14 }
  15
  16 class Emitter {
  17 public:
  18         void emit () {
  19                 Fred ();
  20         }
  21
  22         PBD::Signal0<void> Fred;
  23 };
  24
  25 static int N = 0;
  26
  27 void
  28 receiver ()
  29 {
  30         ++N;
  31 }
  32
  33 void
  34 SignalsTest::testEmission ()
  35 {
  36         Emitter* e = new Emitter;
  37         PBD::ScopedConnection c;
  38         e->Fred.connect_same_thread (c, boost::bind (&receiver));
  39
  40         N = 0;
  41         e->emit ();
  42         e->emit ();
  43         CPPUNIT_ASSERT_EQUAL (2, N);
  44
  45         e->Fred.connect_same_thread (c, boost::bind (&receiver));
  46         N = 0;
  47         e->emit ();
  48         CPPUNIT_ASSERT_EQUAL (2, N);
  49 }
  50
  51 void
  52 SignalsTest::testDestruction ()
  53 {
  54         Emitter* e = new Emitter;
  55         PBD::ScopedConnection c;
  56         e->Fred.connect_same_thread (c, boost::bind (&receiver));
  57         e->emit ();
  58         delete e;
  59         c.disconnect ();
  60
  61         CPPUNIT_ASSERT (true);
  62 }
  63
  64 class Receiver : public PBD::ScopedConnectionList
  65 {
  66 public:
  67         Receiver (Emitter* e) {
  68                 e->Fred.connect_same_thread (*this, boost::bind (&Receiver::receiver, this));
  69         }
  70
  71         void receiver () {
  72                 cout << "Receiver::receiver\n";
  73                 ++N;
  74         }
  75 };
  76
  77 void
  78 SignalsTest::testScopedConnectionList ()
  79 {
  80         Emitter* e = new Emitter;
  81         Receiver* r = new Receiver (e);
  82
  83         N = 0;
  84         e->emit ();
  85         delete r;
  86         e->emit ();
  87
  88         CPPUNIT_ASSERT_EQUAL (1, N);
  89 }