Question

Write the test cases for booking flights in a airline reservation management system. What testing method can be used?

Answer 1

UNIT TESTING

The Unit Testing is a test that tests each single module of the software to check for errors. This is mainly done to discover errors in the code of the Airline Reservation System. The main goal of the unit testing would be to isolate each part of the program and to check the correctness of the code. In the case of the Airline Reservation System, all the web forms and the Java classes will be tested.

There are many benefits for this unit testing:

• The unit testing facilitates change in the code.
• It allows testing to be done in a bottom up fashion.

At the same time, unit testing has some disadvantages such as, it might not identify each and every error in the system.

I have created very basic Flight reservation system in Java.

-------------------------------------------Flight.java---------------------------------------------

public class Flight {
    String flightName;
    String flightFrom;
    String flightTo;
    int flightCost;

    public Flight(String flightName, String flightFrom, String flightTo, int flightCost){
        this.flightName = flightName;
        this.flightFrom = flightFrom;
        this.flightTo = flightTo;
        this.flightCost = flightCost;
    }

    public String getFlightName() {
        return flightName;
    }

    public String getFlightFrom() {
        return flightFrom;
    }

    public String getFlightTo() {
        return flightTo;
    }

    public int getFlightCost() {
        return flightCost;
    }

    @Override
    public String toString() {
        return "Flight{" +
                "flightName='" + flightName + '\'' +
                ", flightFrom='" + flightFrom + '\'' +
                ", flightTo='" + flightTo + '\'' +
                ", flightCost=" + flightCost +
                '}';
    }
}

This class will hold the flight details like flight name , flight from , flight to and flight cost.

By using Flights class constructor we will set all the flight details.

-----------------------------------------------------User.java---------------------------------

public class User {
    String userName;
    long contactNumber;

    User(String userName, long contactNumber){
        this.userName = userName;
        this.contactNumber = contactNumber;
    }

    public String getUserName() {
        return userName;
    }

    public long getContactNumber() {
        return contactNumber;
    }
}

This User class will hold the user details like user name and their contact numbers.

-----------------------------------------------Trip.java-------------------------------------

import java.util.List;

public class Trip {
    Flight flight;
    List<User> user;

    public Flight getFlight() {
        return flight;
    }

    public void setFlight(Flight flight) {
        this.flight = flight;
    }

    public List<User> getUser() {
        return user;
    }

    public void setUser(List<User> users) {
        this.user = users;
    }

    public void showTripDetails(){
        System.out.println(this.flight.toString());
        System.out.println("Passengers travelling in this flight.");
        for(User user: this.user){
            System.out.println(user.userName);
        }
        System.out.println();
    }
}

Trip class will hold the data of flight details and the passenger travelling in this flight.

----------------------------------------------------BookFlight.java-----------I-------------------------

import java.util.ArrayList;
import java.util.List;

public class BookFlight {
    public static void main(String args[]){
        Flight flight1 = new Flight("Boeing", "New York", "Dubai", 800);
        Flight flight2 = new Flight("JetBlue", "New York", "Denver", 600);

        User user1 = new User("Sophia", 67655556);
        User user2 = new User("William", 98767565);
        User user3 = new User("Jayden", 67687556);

        Trip trip1 = new Trip();
        trip1.setFlight(flight1);
        List<User> userList1 = new ArrayList<>();
        userList1.add(user1);
        userList1.add(user2);
        trip1.setUser(userList1);

        trip1.showTripDetails();

        Trip trip2 = new Trip();
        trip2.setFlight(flight2);
        List<User> userList2 = new ArrayList<>();
        userList2.add(user3);
        trip2.setUser(userList2);

        trip2.showTripDetails();

    }
}

BookFlight contains the main method, this is demo of this app. If you run this you can see how flights are created, user creation and how users are added to the flights. And we can see the trip details.

-------------------------------------------------------UnitTestCases.java--------------------------

import org.junit.Test;
import static org.junit.Assert.*;

public class UnitTestCases {
    @Test
    public void testFlightConstructor(){
        Flight flight1 = new Flight("Boeing", "New York", "Dubai", 800);
        assertEquals("Boeing",flight1.getFlightName());
        assertEquals("New York",flight1.getFlightFrom());
        assertEquals("Dubai",flight1.getFlightTo());
        assertEquals(800,flight1.getFlightCost());
    }

    @Test
    public void testUserConstructor(){
        User user1 = new User("Sophia", 67655556);
        assertEquals("Sophia",user1.getUserName());
        assertEquals(67655556,user1.getContactNumber());
    }
}

I created some easy test cases using Junit to test the constructors of Flight and User Class to check whether all the data is set properly.

You can add more test cases if you want to. It all depends on the developer that how much effort they put to create the test cases. To avoid all the bugs in their app.

------------------------------------------Output of BookFlight----------------------------