PowerMock is a framework that extends other mock libraries such as EasyMock with more powerful capabilities.
Quick Start
给一个简单的使用范例。
- Project Struct
├─pom.xml
│
├─src
│ ├─main
│ │ └─java
│ │ └─com
│ │ └─ryo
│ │ ├─domain
│ │ │ User.java
│ │ │
│ │ └─service
│ │ │ UserService.java
│ │ │
│ │ └─impl
│ │ UserServiceImpl.java
│ │
│ └─test
│ └─java
│ └─com
│ └─ryo
│ └─service
│ └─impl
│ UserServiceImplTest.java
- pom.xml
用于常用 jar 的引入。
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.ryo</groupId>
<artifactId>powermock</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<junit.version>4.12</junit.version>
<mockito.version>1.10.19</mockito.version>
<powermock.version>1.6.4</powermock.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
<version>${mockito.version}</version>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-module-junit4</artifactId>
<version>${powermock.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-api-mockito</artifactId>
<version>${powermock.version}</version>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
</exclusion>
<exclusion>
<groupId>org.hamcrest</groupId>
<artifactId>hamcrest-core</artifactId>
</exclusion>
<exclusion>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
</project>
- User.java
简单定义
public class User {
private String username;
public String getUsername(){
return username;
}
public void setUsername(String username){
this.username = username;
}
@Override public String toString(){
return "User{" +
"username='" + username + ''' +
'}';
}
}
- UserService.java & UserServiceImpl.java
public interface UserService {
User getUser(Long id);
}
public class UserServiceImpl {
public boolean checkId(Long id) {
return privateMethod();
}
private boolean privateMethod() {
System.out.println("call private method.");
return true;
}
}
- UserServiceImplTest.java
@RunWith(PowerMockRunner.class)
@PrepareForTest(UserServiceImpl.class)
public class UserServiceImplTest {
@Mock
private UserService userService;
@Before
public void init() {
MockitoAnnotations.initMocks(this);
mockGetUser();
}
/**
* 对获取的信息进行Mock
*/
private void mockGetUser() {
User user = new User();
user.setUsername("powermock");
Mockito.when(userService.getUser(Mockito.anyLong()))
.thenReturn(user);
}
@Test
public void testGetUser() {
User user = userService.getUser(1L);
System.out.println(user);
}
@Test
public void testCheckId() {
final Long id = 1L;
UserServiceImpl userService = new UserServiceImpl();
userService.checkId(id);
}
@Test
public void testPrivateMock() throws Exception{
final Long id = 1L;
UserServiceImpl userService = PowerMockito.mock(UserServiceImpl.class);
PowerMockito.when(userService.checkId(id)).thenCallRealMethod();
PowerMockito.when(userService, "privateMethod").thenReturn(false);
}
}
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