在intellj中使用mockito（依赖maven）

心已赠人 2022-03-21 10:54 529阅读 0赞

1、新建maven项目

2、pom文件中添加如下依赖（使用的是最新的版本）

注：此处使用junit5.3.2，使用junit4.1.2亦可

<dependencies>
            
            <dependency>
                <groupId>org.mockito</groupId>
                <artifactId>mockito-core</artifactId>
                <version>2.23.4</version>
                <scope>test</scope>
            </dependency>
    
            <dependency>
                <groupId>org.junit.jupiter</groupId>
                <artifactId>junit-jupiter-api</artifactId>
                <version>5.3.2</version>
                <scope>test</scope>
            </dependency>
        </dependencies>

3、在src/test/java下创建测试类（注意是在test目录下！）

![20190201102135545.png][]

在main目录下建立测试类会找不到依赖！

原因如下：mockito依赖的Scope为Test，如果需要在main目录下使用，改为Compile即可。（测试类通常写在test环境下）

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d3d19jaGFuZ2Vy_size_16_color_FFFFFF_t_70][]

4、MyTest.java

import org.junit.jupiter.api.Test;
    import java.util.LinkedList;
    import static org.mockito.Mockito.*;
    
    public class MyTest {
    
        @Test
        public void test(){
    
            //You can mock concrete classes, not just interfaces
            LinkedList mockedList = mock(LinkedList.class);
    
            //stubbing
            when(mockedList.get(0)).thenReturn("first");
            when(mockedList.get(1)).thenThrow(new RuntimeException());
    
            //following prints "first"
            System.out.println(mockedList.get(0));
    
            //following throws runtime exception
            System.out.println(mockedList.get(1));
    
            //following prints "null" because get(999) was not stubbed
            System.out.println(mockedList.get(999));
    
            //Although it is possible to verify a stubbed invocation, usually it's just redundant
            //If your code cares what get(0) returns, then something else breaks (often even before verify() gets executed).
            //If your code doesn't care what get(0) returns, then it should not be stubbed. Not convinced? See here.
            verify(mockedList).get(0);
        }
    }

5、运行结果

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d3d19jaGFuZ2Vy_size_16_color_FFFFFF_t_70 1][]

6、其他样例

参见：[http://static.javadoc.io/org.mockito/mockito-core/2.9.0/org/mockito/Mockito.html][http_static.javadoc.io_org.mockito_mockito-core_2.9.0_org_mockito_Mockito.html]

[20190201102135545.png]: /images/20220321/b8b64bc062a243ddb7c15f0a9a84c422.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d3d19jaGFuZ2Vy_size_16_color_FFFFFF_t_70]: /images/20220321/f7a6ae5c04e94d4ebe1fe4633abff749.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d3d19jaGFuZ2Vy_size_16_color_FFFFFF_t_70 1]: /images/20220321/7c23e5582eba474dae8a6444e962eb27.png
[http_static.javadoc.io_org.mockito_mockito-core_2.9.0_org_mockito_Mockito.html]: http://static.javadoc.io/org.mockito/mockito-core/2.9.0/org/mockito/Mockito.html