JUnit编写测试


在这里,我们将看到使用POJO类,业务逻辑类和测试类的JUnit测试的一个完整示例,该类将由测试运行器运行。

在C:> JUNIT_WORKSPACE中创建 EmployeeDetails.java ,这是一个POJO类。

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 类用于 -

  • 获取/设置员工姓名的值。
  • 获取/设置员工月薪的值。
  • 获取/设置员工年龄的值。

在C:> JUNIT_WORKSPACE中创建一个名为 EmpBusinessLogic.java 的文件,该文件包含业务逻辑。

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 类用于计算 -

  • 雇员的年薪。
  • 员工的评估金额。

在C:> JUNIT_WORKSPACE中创建一个名为 TestEmployeeDetails.java 的文件,该文件包含要测试的测试用例。

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 类用于测试 EmpBusinessLogic 类的方法。它

  • 测试员工的年薪。
  • 测试员工的评估数量。

接下来,在C:> JUNIT_WORKSPACE中创建一个名为 TestRunner.java 的java类文件来执行测试用例。

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());
   }
}

使用javac编译测试用例和测试运行器类。

C:\JUNIT_WORKSPACE>javac EmployeeDetails.java 
EmpBusinessLogic.java TestEmployeeDetails.java TestRunner.java

现在运行Test Runner,它将运行提供的Test Case类中定义的测试用例。

C:\JUNIT_WORKSPACE>java TestRunner

验证输出。

true