搜云库技术团队
文章永久连接：https://tech.souyunku.com/?p=8734
JUnit – 编写测试
在这里你将会看到一个应用 POJO 类，Business logic 类和在 test runner 中运行的 test 类的 JUnit 测试的例子。
在 C:\ > JUNIT_WORKSPACE 路径下创建一个名为 EmployeeDetails.java 的 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 类被用于
- 取得或者设置雇员的姓名的值
- 取得或者设置雇员的每月薪水的值
- 取得或者设置雇员的年龄的值
在 C:\ > JUNIT_WORKSPACE 路径下创建一个名为 EmpBusinessLogic.java 的 business logic 类
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 类被用来计算
- 雇员每年的薪水
- 雇员的评估金额
在 C:\ > JUNIT_WORKSPACE 路径下创建一个名为 TestEmployeeDetails.java 的准备被测试的测试案例类
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 是用来测试 EmpBusinessLogic 类的方法的，它
- 测试雇员的每年的薪水
- 测试雇员的评估金额
现在让我们在 C:\ > JUNIT_WORKSPACE 路径下创建一个名为 TestRunner.java 的类来执行测试案例类
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());
}
}
用javac编译 Test case 和 Test Runner 类
C:\JUNIT_WORKSPACE>javac EmployeeDetails.java
EmpBusinessLogic.java TestEmployeeDetails.java TestRunner.java
现在运行将会运行 Test Case 类中定义和提供的测试案例的 Test Runner
C:\JUNIT_WORKSPACE>java TestRunner
检查运行结果
true
