ECElevatorTest.cpp

// Testing elevators

#include <vector>
#include <iostream>
#include "ECElevatorSim.h"

using namespace std;

// Test utility
template<class T>
void ASSERT_EQ(T x, T y)
{
  if( x == y )
  {
    cout << "Test passed: equal: " << x << "  " << y << endl;
  }
  else
  {
    cout << "Test FAILED: equal: " << x << "  " << y << endl;
  }
}

static void RunTest(int numFloors, int timeSim, vector<ECElevatorSimRequest> &listRequests, vector<int> &listArriveTime )
{
    // simulate
    ECElevatorSim sim(numFloors, listRequests );
    sim.Simulate(timeSim);

    // status of requests
    for(unsigned int i=0; i<listRequests.size(); ++i)
    {
        //cout << "Request " << i << ": ";
        int tmDone = listRequests[i].GetArriveTime();
        ASSERT_EQ(tmDone, listArriveTime[i] );
#if 0
        if( tmDone >= 0 )
        {
            cout << "arrived at time " << tmDone;
        }
        else
        {
            cout << " hasn't arrived yet";
        }
        cout << endl;
#endif
    }
}

// a simple test: a single passenger going from floor 3 to 1
// this passenger arrived time 7: 
// (i) elevator gets to floor 3 at time 4 (received request from this passenger at time 2);
// (ii) wait for time 1 to let the passenger in the elevator (now time 5)
// (iii) move to floor 1 from 3, which takes time 6 and 7; so arrive at floor 1 (destination) at time 7
static void Test0()
{
    cout << "\n****** TEST 0\n";
    // test setup
    const int NUM_FLOORS = 7;
    const int timeSim = 10;
    ECElevatorSimRequest r1(2, 3, 1);
    vector<ECElevatorSimRequest> listRequests;
    listRequests.push_back(r1);
    vector<int> listArriveTime;
    listArriveTime.push_back(7);

    // request for elevator at time 2, arrive at time 7
    RunTest(NUM_FLOORS, timeSim, listRequests, listArriveTime);
}

// Two passengers: 
// Passenger 1: arrived time 7: 
// (i) elevator gets to floor 3 at time 4 (received request from this passenger at time 2);
// (ii) wait for time 1 to let the passenger in the elevator (now time 5)
// (iii) move to floor 3 from 5, which takes time 6 and 7; so arrive at floor 5 (destination) at time 7
// Passenger 2: 
// (i) elevator arrives at floor 6 at time 9 (note: unloading at time 8 at floor 5)
// (ii) move downwards starting at time 10; take 6 time units to get to floor 1 (arrived at floor 1 at time 15)
static void Test1()
{
    cout << "\n****** TEST 1\n";
    // test setup
    const int NUM_FLOORS = 7;
    const int timeSim = 20;
    ECElevatorSimRequest r1(2, 3, 5), r2(2, 6, 1);
    vector<ECElevatorSimRequest> listRequests;
    listRequests.push_back(r1);
    listRequests.push_back(r2);
    vector<int> listArriveTime;
    listArriveTime.push_back(7);
    listArriveTime.push_back(15);

    // simulate
    RunTest(NUM_FLOORS, timeSim, listRequests, listArriveTime);
}

// Two passengers: 
// (i) elevator gets to floor 4 at time 5 to pick up passenger 1 (received request from this passenger at time 2);
// (ii) wait for time 1 to let passenger 1 in the elevator (now time 6)
// (iii) move to floor 4 from 5 (arrived at time 7), so to pick up passenger 2; 
// (iv) at time 8 moving downwards from floor 5
// (v) elevator arrives at floor 2 at time 11 (so to unload passenger 2; i.e., passenger 2 arrives at time 11)
// (vi) move downwards at time 12 and arrive at floor 1 at time 13; unload passenger 1 (i.e. passenger 1 arrives at time 13)
static void Test2()
{
    cout << "\n****** TEST 2\n";
    // test setup
    const int NUM_FLOORS = 7;
    const int timeSim = 20;
    ECElevatorSimRequest r1(2, 4, 1), r2(3, 5, 2);
    vector<ECElevatorSimRequest> listRequests;
    listRequests.push_back(r1);
    listRequests.push_back(r2);
    vector<int> listArriveTime;
    listArriveTime.push_back(13);
    listArriveTime.push_back(11);

    // simulate
    RunTest(NUM_FLOORS, timeSim, listRequests, listArriveTime);
}

// Three passengers: 
// (i) elevator starts to move upwards from floor 1 at time 2 
// (ii) pick up passenger 2 at time 3 at floor 2 (still going up)
// (iii) arrive at floor 4 at time 6, so to pick up passenger 1; 
// (iv) at time 8 arrives at floor 5 to unload passenger 2 (passenger 2 arrives at time 8) and moving downwards at time 9 (note: passenger 3 is not ready to go yet)
// (v) arrives at floor 1 at time 13 (so to unload passenger 1; i.e., passenger 1 arrives at time 13)
// (vi) move upwards starting at time 14 and arrive at floor 5 at time 18 and pick up passenger 3 
// (vii) move downwards starting at time 19 and arrives at floor 1 at time 23 (passenger 3 arrives at time 23)
static void Test3()
{
    cout << "\n****** TEST 3\n";
    // test setup
    const int NUM_FLOORS = 8;
    const int timeSim = 25;
    ECElevatorSimRequest r1(2, 4, 1), r2(3, 2, 5), r3(12, 5, 1);
    vector<ECElevatorSimRequest> listRequests;
    listRequests.push_back(r1);
    listRequests.push_back(r2);
    listRequests.push_back(r3);
    vector<int> listArriveTime;
    listArriveTime.push_back(13);
    listArriveTime.push_back(8);
    listArriveTime.push_back(23);

    // simulate
    RunTest(NUM_FLOORS, timeSim, listRequests, listArriveTime);
}

// Four passengers: 
// passengers 1 and 2 both arrives at time 13
// passenger 3 arrives at time 16
// passenger 4 arrives at time 26
static void Test4()
{
    cout << "\n****** TEST 4\n";
    // test setup
    const int NUM_FLOORS = 8;
    const int timeSim = 35;
    ECElevatorSimRequest r1(2, 3, 1), r2(3, 5, 1), r3(8, 2, 3), r4(10, 6, 1);
    vector<ECElevatorSimRequest> listRequests;
    listRequests.push_back(r1);
    listRequests.push_back(r2);
    listRequests.push_back(r3);
    listRequests.push_back(r4);
    vector<int> listArriveTime;
    listArriveTime.push_back(13);
    listArriveTime.push_back(13);
    listArriveTime.push_back(16);
    listArriveTime.push_back(26);

    // simulate
    RunTest(NUM_FLOORS, timeSim, listRequests, listArriveTime);
}


int main()
{
    Test0();
    Test1();
    Test2();
    Test3();
    Test4();
}