Here we will see one complete example of JUnit testing using POJO
class, Business logic class, and a test class, which will be run by the
test runner.
Create EmployeeDetails.java in C:\>JUNIT_WORKSPACE, which is a POJO class.
Create EmployeeDetails.java in C:\>JUNIT_WORKSPACE, which is a POJO class.
public class EmployeeDetails { private String name; private double monthlySalary; private int age; /** * @return the name */ public String getName() { return name; } /** * @param name the name to set */ public void setName(String name) { this.name = name; } /** * @return the monthlySalary */ public double getMonthlySalary() { return monthlySalary; } /** * @param monthlySalary the monthlySalary to set */ public void setMonthlySalary(double monthlySalary) { this.monthlySalary = monthlySalary; } /** * @return the age */ public int getAge() { return age; } /** * @param age the age to set */ public void setAge(int age) { this.age = age; } }EmployeeDetails class is used to −
- get/set the value of employee's name.
- get/set the value of employee's monthly salary.
- get/set the value of employee's age.
public class EmpBusinessLogic { // Calculate the yearly salary of employee public double calculateYearlySalary(EmployeeDetails employeeDetails) { double yearlySalary = 0; yearlySalary = employeeDetails.getMonthlySalary() * 12; return yearlySalary; } // Calculate the appraisal amount of employee public double calculateAppraisal(EmployeeDetails employeeDetails) { double appraisal = 0; if(employeeDetails.getMonthlySalary() < 10000){ appraisal = 500; }else{ appraisal = 1000; } return appraisal; } }EmpBusinessLogic class is used for calculating −
- the yearly salary of an employee.
- the appraisal amount of an employee.
import org.junit.Test; import static org.junit.Assert.assertEquals; public class TestEmployeeDetails { EmpBusinessLogic empBusinessLogic = new EmpBusinessLogic(); EmployeeDetails employee = new EmployeeDetails(); //test to check appraisal @Test public void testCalculateAppriasal() { employee.setName("Rajeev"); employee.setAge(25); employee.setMonthlySalary(8000); double appraisal = empBusinessLogic.calculateAppraisal(employee); assertEquals(500, appraisal, 0.0); } // test to check yearly salary @Test public void testCalculateYearlySalary() { employee.setName("Rajeev"); employee.setAge(25); employee.setMonthlySalary(8000); double salary = empBusinessLogic.calculateYearlySalary(employee); assertEquals(96000, salary, 0.0); } }TestEmployeeDetails class is used for testing the methods of EmpBusinessLogic class. It
- tests the yearly salary of the employee.
- tests the appraisal amount of the employee.
import org.junit.runner.JUnitCore; import org.junit.runner.Result; import org.junit.runner.notification.Failure; public class TestRunner { public static void main(String[] args) { Result result = JUnitCore.runClasses(TestEmployeeDetails.class); for (Failure failure : result.getFailures()) { System.out.println(failure.toString()); } System.out.println(result.wasSuccessful()); } }Compile the test case and Test Runner classes using javac.
C:\JUNIT_WORKSPACE>javac EmployeeDetails.java EmpBusinessLogic.java TestEmployeeDetails.java TestRunner.javaNow run the Test Runner, which will run the test case defined in the provided Test Case class.
C:\JUNIT_WORKSPACE>java TestRunnerVerify the output.
true
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