libcruft-util/test/signal.cpp

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#include <cstdlib>
#include "signal.hpp"
#include "debug.hpp"
#include "raii.hpp"
//-----------------------------------------------------------------------------
void
test_null (void)
{
util::signal<void(void)> void_signal;
void_signal ();
}
///////////////////////////////////////////////////////////////////////////////
void
increment_uint (unsigned int &val)
{
++val;
}
//-----------------------------------------------------------------------------
void
test_single (void)
{
unsigned int val = 0;
util::signal<void(unsigned int&)> void_signal;
auto raii = void_signal.connect (increment_uint);
void_signal (val);
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CHECK_EQ (val, 1);
}
//-----------------------------------------------------------------------------
void
test_double (void)
{
unsigned int val = 0;
util::signal<void(unsigned int&)> void_signal;
auto raii = void_signal.connect (increment_uint);
auto raii = void_signal.connect (increment_uint);
void_signal (val);
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CHECK_EQ (val, 2);
}
///////////////////////////////////////////////////////////////////////////////
void
test_linking_pointers (void)
{
util::signal<void(const char*)> ptr_signal;
ptr_signal (nullptr);
}
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///////////////////////////////////////////////////////////////////////////////
void
test_value_signal (void)
{
util::value_signal<unsigned> val;
auto raii = val.connect ([] (unsigned v) { CHECK_EQ (v, 42); });
val = 42u;
unsigned check = val;
CHECK_EQ (check, 42);
}
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///////////////////////////////////////////////////////////////////////////////
void
test_combiner (void)
{
{
util::signal<bool(void), util::combine::logical_and> sig;
unsigned count = 0;
auto raii = sig.connect ([&] (void) { ++count; return true; });
auto raii = sig.connect ([&] (void) { ++count; return true; });
auto raii = sig.connect ([&] (void) { ++count; return true; });
CHECK (sig ());
CHECK_EQ (count, 3);
}
{
util::signal<bool(void), util::combine::logical_and> sig;
unsigned count = 0;
auto raii = sig.connect ([&] (void) { ++count; return true; });
auto raii = sig.connect ([&] (void) { ++count; return false; });
auto raii = sig.connect ([&] (void) { ++count; return true; });
CHECK (!sig ());
CHECK_EQ (count, 2);
}
}
///////////////////////////////////////////////////////////////////////////////
void
test_disconnect (void)
{
util::signal<void(void)> sig;
util::signal<void(void)>::cookie a = sig.connect ([&] (void) { sig.disconnect (a); });
util::signal<void(void)>::cookie b = sig.connect ([&] (void) { sig.disconnect (b); });
util::signal<void(void)>::cookie c = sig.connect ([&] (void) { sig.disconnect (c); });
util::signal<void(void)>::cookie d = sig.connect ([&] (void) { sig.disconnect (d); });
sig ();
}
///////////////////////////////////////////////////////////////////////////////
int
main (int, char **)
{
test_null ();
test_single ();
test_double ();
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test_value_signal ();
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test_combiner ();
test_disconnect ();
return EXIT_SUCCESS;
}