Question

How can I write a unit test for the following java method? (I am using intelliJ)

public class ReviewEmployee{

public void EmployeeReview(Employee currentEmployee){

System.out.println("Your recorded hours for the week are: ") + (currentEmployee.getHours());

System.out.println("Your satisfactory rating is: ") + (currentlyEmployee.getRating());

System.out.println("Your bonus is: ");

if(currentEmployee.getRating() < 3){

System.out.println(currentlyEmployee.getBonus());

}

else{

System.out.println(currentlyEmployee.getBonus() + 500);

}

}

}

The Employee class is as follows:

Public class Employee{

               Private double hours;

               Private double rating;

               Private double bonus;

               Public Employee(double hours, double rating, double bonus){

              

               This.hours=hours;

               This.rating=rating;

               This.bonus=bonus;

               }

               Public double getHours(){

               Return hours;

               }

               Public double getRating(){

               Return rating;

               }

               Public double getBonus(){

               Return bonus;

               }

This is what I have so far:

import org.junit.Test;



import static org.junit.Assert.*;

public class EmployeeReviewTest {

    @Test

    public void EmployeeReview() {

        EmpReviewTest x = new EmpReviewTest();

    }
}

Please be detailed so I can understand, thanks!

Answer 1

Employee.java

public class Employee {

    private double hours;

    private double rating;

    private double bonus;

    public Employee(double hours, double rating, double bonus) {
        this.hours = hours;
        this.rating = rating;
        this.bonus = bonus;
    }

    public double getHours() {
        return hours;
    }

    public double getRating() {
        return rating;
    }

    public double getBonus() {
        return bonus;
    }
}

ReviewEmployee.java

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

public class ReviewEmployee {
    public double EmployeeReview(Employee currentEmployee) {
        System.out.println("Your recorded hours for the week are: " + currentEmployee.getHours());
        System.out.println("Your satisfactory rating is: " + currentEmployee.getRating());
        System.out.println("Your bonus is: ");

        /*RETURN  TYPE WILL REMAIN VOID*/
//        if (currentEmployee.getRating() < 3) {
//            System.out.println(currentEmployee.getBonus());
//        } else {
//            System.out.println(currentEmployee.getBonus() + 500);
//        }
//        assertEquals(900, currentEmployee.getBonus(), 0);
//        assertEquals(40, currentEmployee.getHours(), 0);
//        assertEquals(4, currentEmployee.getRating(), 0);

        /*RETURN  TYPE WILL BE DOUBLE */
        if (currentEmployee.getRating() < 3) {
            return currentEmployee.getBonus();
        }
        return currentEmployee.getBonus() + 500;
    }
}

// comment one section to check the result accordingly

EmployeeReviewTest.java

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

public class EmployeeReviewTest {
    @Test
    public void EmployeeReview() {
        Employee employee = new Employee(40, 4, 400);
        ReviewEmployee reviewEmployee = new ReviewEmployee();
        assertEquals(900, reviewEmployee.EmployeeReview(employee), 0);
        assertEquals(40, employee.getHours(), 0);
        assertEquals(4, employee.getRating(), 0);
        assertEquals(400, employee.getBonus(), 0);

        employee = new Employee(40, 2, 400);
        reviewEmployee = new ReviewEmployee();
        assertEquals(400, reviewEmployee.EmployeeReview(employee), 0);
        assertEquals(40, employee.getHours(), 0);
        assertEquals(2, employee.getRating(), 0);
        assertEquals(400, employee.getBonus(), 0);
    }
}
// thus @Test method will test the given hour,rating and bonus and the bonus after rating calculation

// assert equals method check whether the expected value and the value returned from the method are equal or not
// and delta is to maximum allowable difference which can be expected in result

// see i have make one change in ReviewEmployee class that is it will return double instead of void
// if you want to remain it void than we have to implement
// assertEquals in ReviewEmployee class only because we have to pass three parameters which cannot be void

Output

// COMMENT IN CASE OF ANY QUERY