zoukankan      html  css  js  c++  java
  • [Mockito] Spring Unit Testing with Mockito

    It is recommened to write unit testing with Mockito in Spring framework, because it is much faster with Spring framework test. But in case you can doing MVC, you still need to use spring framework test.

    In this post, we need to understand why to use Mockito. 

    For example, we have two class:

    package com.example.in28minutes.cdi;
    
    import javax.inject.Named;
    
    @Named
    public class SomeCDIDAO {
        public int[] getData() {
            return new int[] {5,89,100};
        }
    }
    

    package com.example.in28minutes.cdi;
    
    import javax.inject.Inject;
    import javax.inject.Named;
    
    @Named
    public class SomeCDIBusiness {
    
        @Inject
        SomeCDIDAO someCDIDAO;
    
        public SomeCDIDAO getSomeCDIDAO() {
            return someCDIDAO;
        }
    
        public void setSomeCDIDAO(SomeCDIDAO someCDIDAO) {
            this.someCDIDAO = someCDIDAO;
        }
    
        public int findGreatest() {
            int greatest = Integer.MIN_VALUE;
            int[] data = someCDIDAO.getData();
            for (int value : data) {
                if (value > greatest) {
                    greatest = value;
                }
            }
            return greatest;
        }
    }

    'SomeCDIDAO' you can consider this class is mainly dealing with Database, fetech data, inserting data. 'SomeCDIBusiness' is using SomeCDIDAO to fetching data.

    Whenever, class is dealing with Database, you should always write tests in Mockito. You should mock the opretaion, instead calling the database for real.

    package com.example.in28minutes.cdi;
    
    import com.example.in28minutes.In28minutesBasicApplication;
    import com.example.in28minutes.In28minutesCdiApplication;
    import org.junit.Test;
    import org.junit.runner.RunWith;
    import org.mockito.InjectMocks;
    import org.mockito.Mock;
    import org.mockito.Mockito;
    import org.mockito.junit.MockitoJUnitRunner;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.test.context.ContextConfiguration;
    import org.springframework.test.context.junit4.SpringRunner;
    
    import javax.inject.Inject;
    
    import static org.junit.Assert.assertEquals;
    import static org.mockito.Mockito.mock;
    
    // Load the context
    @RunWith(MockitoJUnitRunner.class)
    public class SomeCdiBusinessTest {
    
        @InjectMocks
        SomeCDIBusiness someCDIBusiness;
    
        @Mock
        SomeCDIDAO mockDAO;
    
        @Test
        public void testBasicScenario () {
            Mockito.when(mockDAO.getData()).thenReturn(new int[] {1,2,3});
            int result = someCDIBusiness.findGreatest();
            assertEquals(3, result);
        }
    
        @Test
        public void testBasicScenario_null () {
            Mockito.when(mockDAO.getData()).thenReturn(new int[] {});
            int result = someCDIBusiness.findGreatest();
            assertEquals(Integer.MIN_VALUE, result);
        }
    }

    Configuration:

            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-test</artifactId>
                <scope>test</scope>
            </dependency>
    
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <scope>test</scope>
            </dependency>
    
            <dependency>
                <groupId>org.mockito</groupId>
                <artifactId>mockito-core</artifactId>
                <scope>test</scope>
            </dependency>
    
            <!-- <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency> -->
  • 相关阅读:
    python引用.py文件
    推荐系统之矩阵分解 转载 特别好
    数据挖掘之一元线性回归 python代码
    system服务文件讲解 转载
    bin sbin /usr/bin /usr/sbin区别 转载
    linux设置部门(或者学生部门)的共享目录
    Error establishing a database connection wordpress网站出现这个问题centos7的
    tomcat的java项目部署位置
    MAMP PRO教程
    MAMP使用简单教程
  • 原文地址:https://www.cnblogs.com/Answer1215/p/10762751.html
Copyright © 2011-2022 走看看