/*
 *  serviceregistry_t.cppunit.cc
 *  CMSSW
 *
 *  Created by Chris Jones on 9/7/05.
 *
 */
#include <iostream>

#include "FWCore/ServiceRegistry/interface/connect_but_block_self.h"

#include <cppunit/extensions/HelperMacros.h>

class testConnectButBlockSelf : public CppUnit::TestFixture {
  CPPUNIT_TEST_SUITE(testConnectButBlockSelf);

  CPPUNIT_TEST(test);

  CPPUNIT_TEST_SUITE_END();

public:
  void setUp() {}
  void tearDown() {}

  void test();
};

///registration of the test so that the runner can find it
CPPUNIT_TEST_SUITE_REGISTRATION(testConnectButBlockSelf);

namespace {
  struct ReSignaller {
    edm::signalslot::Signal<void()>* signal_;
    int& seen_;

    ReSignaller(edm::signalslot::Signal<void()>& iSig, int& iSee) : signal_(&iSig), seen_(iSee) {}

    void operator()() {
      //std::cout <<"see signal"<<std::endl;
      ++seen_;
      (*signal_)();
    }
  };
}  // namespace

void testConnectButBlockSelf::test() {
  using namespace edm::serviceregistry;
  edm::signalslot::Signal<void()> theSignal;

  int iOne(0);
  ReSignaller one(theSignal, iOne);
  connect_but_block_self(theSignal, one);

  int iTwo(0);
  ReSignaller two(theSignal, iTwo);
  connect_but_block_self(theSignal, two);

  theSignal();

  //std::cout <<"one "<<iOne <<std::endl;
  //std::cout <<"two "<<iTwo <<std::endl;

  //Both see two changes, but they never see their 'own' change
  CPPUNIT_ASSERT(iOne == 2);
  CPPUNIT_ASSERT(iTwo == 2);
}