文章17 | 阅读 4425 | 点赞0
Mockito 提供了一个Inorder 类, 它负责处理在适当的时间内模拟将要做出的方法调用的顺序。
//create an inOrder verifier for a single mock
InOrder inOrder = inOrder(calcService);
//following will make sure that add is first called then subtract is called.
inOrder.verify(calcService).add(20.0,10.0);
inOrder.verify(calcService).subtract(20.0,10.0);
步骤1−创建一个称为 CalculatorService 的接口, 以提供数学函数
文件: CalculatorService. java
/**
* 计算相关服务
*/
public interface CalculatorService {
/**
* 加法
*
* @param input1
* @param input2
* @return
*/
public double add(double input1, double input2);
/**
* 减法
*
* @param input1
* @param input2
* @return
*/
public double subtract(double input1, double input2);
/**
* 乘法
*
* @param input1
* @param input2
* @return
*/
public double multiply(double input1, double input2);
/**
* 除法
*
* @param input1
* @param input2
* @return
*/
public double divide(double input1, double input2);
}
步骤2−创建一个 JAVA 类来表示 MathApplication
文件: MathApplication. java
/**
* 数学应用
*/
public class MathApplication {
private CalculatorService calcService;
public void setCalculatorService(CalculatorService calcService) {
this.calcService = calcService;
}
public double add(double input1, double input2) {
return calcService.add(input1, input2);
}
public double subtract(double input1, double input2) {
return calcService.subtract(input1, input2);
}
public double multiply(double input1, double input2) {
return calcService.multiply(input1, input2);
}
public double divide(double input1, double input2) {
return calcService.divide(input1, input2);
}
}
步骤3−测试 MathApplication 类
让我们测试 MathApplication 类, 通过注入 calculatorService 的Mock。Mock将由 Mockito 创建。
在这里, 我们添加了两个模拟方法调用, add() 和subtract(), 通过when() 的模拟对象。但是在测试过程中, 我们在调用 add () 之前调用了subtract()。当我们使用 Mockito 创建一个模拟对象时, 该方法的执行顺序无关紧要。使用 order 类, 我们可以确保调用顺序。
文件: MathApplicationTester. java
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import static org.mockito.Mockito.inOrder;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.InOrder;
import org.mockito.junit.MockitoJUnitRunner;
// @RunWith attaches a runner with the test class to initialize the test data
@RunWith(MockitoJUnitRunner.class)
public class MathApplicationTester {
private MathApplication mathApplication;
private CalculatorService calcService;
@Before
public void setUp(){
mathApplication = new MathApplication();
calcService = mock(CalculatorService.class);
mathApplication.setCalculatorService(calcService);
}
@Test
public void testAddAndSubtract(){
//add the behavior to add numbers
when(calcService.add(20.0,10.0)).thenReturn(30.0);
//subtract the behavior to subtract numbers
when(calcService.subtract(20.0,10.0)).thenReturn(10.0);
//test the add functionality
Assert.assertEquals(mathApplication.add(20.0, 10.0),30.0,0);
//test the subtract functionality
Assert.assertEquals(mathApplication.subtract(20.0, 10.0),10.0,0);
//create an inOrder verifier for a single mock
InOrder inOrder = inOrder(calcService);
//following will make sure that add is first called then subtract is called.
inOrder.verify(calcService).add(20.0,10.0);
inOrder.verify(calcService).subtract(20.0,10.0);
}
}
步骤4−执行测试用例
在C: \ > Mockito_WORKSPACE中创建名为 TestRunner 的 java 类文件以执行测试用例。
文件: TestRunner. java
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(MathApplicationTester.class);
for (Failure failure : result.getFailures()) {
System.out.println(failure.toString());
}
System.out.println(result.wasSuccessful());
}
}
步骤5−验证结果
使用javac编译器编译类, 如下所示−
C:\Mockito_WORKSPACE>javac CalculatorService.java MathApplication.
java MathApplicationTester.java TestRunner.java
现在运行TestRunner以查看结果−
C:\Mockito_WORKSPACE>java TestRunner
验证输出。
testAddAndSubtract(MathApplicationTester):
Verification in order failure
Wanted but not invoked:
calculatorService.add(20.0, 10.0);
-> at MathApplicationTester.testAddAndSubtract(MathApplicationTester.java:48)
Wanted anywhere AFTER following interaction:
calculatorService.subtract(20.0, 10.0);
-> at MathApplication.subtract(MathApplication.java:13)
false
翻译自:https://www.tutorialspoint.com/mockito/mockito_ordered_verification.htm
版权说明 : 本文为转载文章, 版权归原作者所有 版权申明
原文链接 : https://chenjianfei.blog.csdn.net/article/details/79546677
内容来源于网络,如有侵权,请联系作者删除!