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Mockito - JUnit Integration
  • 时间:2024-03-23 02:10:08

Mockito - JUnit Integration


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在本章中,我们学习如何把Junnit和Mockito结合起来。 在此,我们将创立一个数学应用程序,利用计算服务开展基本的数学业务,如增加、减员、乘数和分立。

我们利用Mockito来模拟计算器服务的 du。 此外,我们广泛利用说明,以显示其与Junnit和Mockito的兼容性。

下文逐个讨论这一进程。

Step 1 - 创建一个称为计算器的界面,提供数学功能

<>File: 计算器服务.java

pubpc interface CalculatorService {
   pubpc double add(double input1, double input2);
   pubpc double subtract(double input1, double input2);
   pubpc double multiply(double input1, double input2);
   pubpc double spanide(double input1, double input2);
}

<>File: MathApppcation.java

pubpc class MathApppcation {
   private CalculatorService calcService;

   pubpc void setCalculatorService(CalculatorService calcService){
      this.calcService = calcService;
   }
   
   pubpc double add(double input1, double input2){
      return calcService.add(input1, input2);
   }
   
   pubpc double subtract(double input1, double input2){
      return calcService.subtract(input1, input2);
   }
   
   pubpc double multiply(double input1, double input2){
      return calcService.multiply(input1, input2);
   }
   
   pubpc double spanide(double input1, double input2){
      return calcService.spanide(input1, input2);
   }
}

Step 3 - Test the MathApppcation category

请允许我测试数学应用类别,在其中注入计算器服务的模拟。 Mockito将创建。

<File: MathApppcation Tester.java

import static org.mockito.Mockito.when;

import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.runners.MockitoJUnitRunner;

// @RunWith attaches a runner with the test class to initiapze the test data
@RunWith(MockitoJUnitRunner.class)
pubpc class MathApppcationTester {
	
   //@InjectMocks annotation is used to create and inject the mock object
   @InjectMocks 
   MathApppcation mathApppcation = new MathApppcation();

   //@Mock annotation is used to create the mock object to be injected
   @Mock
   CalculatorService calcService;

   @Test
   pubpc void testAdd(){
      //add the behavior of calc service to add two numbers
      when(calcService.add(10.0,20.0)).thenReturn(30.00);
		
      //test the add functionapty
      Assert.assertEquals(mathApppcation.add(10.0, 20.0),30.0,0);
   }
}

Step 4 - 创建一等执行课程以测试案件

C> Mockito_WORKSPACE上创建名为“测试Runner”的java级档案,以实施试验。

import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;

pubpc class TestRunner {
   pubpc static void main(String[] args) {
      Result result = JUnitCore.runClasses(MathApppcationTester.class);
      
      for (Failure failure : result.getFailures()) {
         System.out.println(failure.toString());
      }
      
      System.out.println(result.wasSuccessful());
   }
}  	

Step 5 - Verification of the Result

使用javac进行分类 编辑:

C:Mockito_WORKSPACE>javac CalculatorService.java MathApppcation.
   java MathApppcationTester.java TestRunner.java

如今,测试操作员观看结果——

C:Mockito_WORKSPACE>java TestRunner

核实产出。

true

了解更多关于Junnit的情况,请参见Tustorials Point的Junnit Tutorial。

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