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livetrax/libs/pbd/test/signals_test.cc

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#include <glibmm/thread.h>
#include "signals_test.h"
#include "pbd/signals.h"
using namespace std;
CPPUNIT_TEST_SUITE_REGISTRATION (SignalsTest);
void
SignalsTest::setUp ()
{
if (!Glib::thread_supported ()) {
Glib::thread_init ();
}
}
class Emitter {
public:
void emit () {
Fred ();
}
PBD::Signal0<void> Fred;
};
static int N = 0;
void
receiver ()
{
++N;
}
void
SignalsTest::testEmission ()
{
Emitter* e = new Emitter;
PBD::ScopedConnection c;
e->Fred.connect_same_thread (c, boost::bind (&receiver));
N = 0;
e->emit ();
e->emit ();
CPPUNIT_ASSERT_EQUAL (2, N);
PBD::ScopedConnection d;
e->Fred.connect_same_thread (d, boost::bind (&receiver));
N = 0;
e->emit ();
CPPUNIT_ASSERT_EQUAL (2, N);
}
void
SignalsTest::testDestruction ()
{
Emitter* e = new Emitter;
PBD::ScopedConnection c;
e->Fred.connect_same_thread (c, boost::bind (&receiver));
e->emit ();
delete e;
c.disconnect ();
CPPUNIT_ASSERT (true);
}
class Receiver : public PBD::ScopedConnectionList
{
public:
Receiver (Emitter* e) {
e->Fred.connect_same_thread (*this, boost::bind (&Receiver::receiver, this));
}
void receiver () {
++N;
}
};
void
SignalsTest::testScopedConnectionList ()
{
Emitter* e = new Emitter;
Receiver* r = new Receiver (e);
N = 0;
e->emit ();
delete r;
e->emit ();
CPPUNIT_ASSERT_EQUAL (1, N);
}