Utilities/test/signal_t.cppunit.cpp

0001 /*----------------------------------------------------------------------
0002
0003 Test program for edm::signalslot::Signal class.
0004
0005  ----------------------------------------------------------------------*/
0006
0007 #include <cassert>
0008 #include <iostream>
0009 #include <string>
0010 #include <cppunit/extensions/HelperMacros.h>
0011 #include "FWCore/Utilities/interface/Signal.h"
0012
0013 class testSignal : public CppUnit::TestFixture {
0014   CPPUNIT_TEST_SUITE(testSignal);
0015
0016   CPPUNIT_TEST(connectTest);
0017   CPPUNIT_TEST(emitTest);
0018
0019   CPPUNIT_TEST_SUITE_END();
0020
0021 public:
0022   void setUp() {}
0023   void tearDown() {}
0024
0025   void connectTest();
0026   void emitTest();
0027 };
0028
0029 ///registration of the test so that the runner can find it
0030 CPPUNIT_TEST_SUITE_REGISTRATION(testSignal);
0031
0032 static int s_value = 0;
0033 static void setValueFunct(int iValue) { s_value = iValue; }
0034
0035 void testSignal::connectTest()
0036
0037 {
0038   edm::signalslot::Signal<void(int)> sig;
0039   CPPUNIT_ASSERT(sig.slots().size() == 0);
0040
0041   int value1 = 0;
0042   sig.connect([&](int iValue) -> void { value1 = iValue; });
0043
0044   CPPUNIT_ASSERT(sig.slots().size() == 1);
0045
0046   int value2 = 0;
0047   sig.connect([&](int iValue) { value2 = iValue; });
0048   CPPUNIT_ASSERT(sig.slots().size() == 2);
0049
0050   sig.connect(setValueFunct);
0051   //see that the slots we created are actually there
0052   for (auto const& slot : sig.slots()) {
0053     slot(5);
0054   }
0055   CPPUNIT_ASSERT(value1 == 5);
0056   CPPUNIT_ASSERT(value2 == 5);
0057   CPPUNIT_ASSERT(value2 == s_value);
0058 }
0059
0060 void testSignal::emitTest() {
0061   edm::signalslot::Signal<void(int)> sig;
0062
0063   int value1 = 0;
0064   sig.connect([&](int iValue) { value1 = iValue; });
0065
0066   int value2 = 0;
0067   sig.connect([&](int iValue) { value2 = iValue; });
0068
0069   sig.emit(5);
0070   CPPUNIT_ASSERT(value1 == 5);
0071   CPPUNIT_ASSERT(value2 == 5);
0072
0073   sig.emit(1);
0074   CPPUNIT_ASSERT(value1 == 1);
0075   CPPUNIT_ASSERT(value2 == 1);
0076 }