我在运行一个简单的测试时遇到了麻烦，根据互联网上找到的所有示例，该测试应该可以正常工作。
我有一个包含以下 pom.xml 的 Java 8 Maven 项目:
<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>testingPowerMock</groupId>
<artifactId>constructorMocking</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>TestingPowerMock</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.19.1</version>
<dependencies>
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-surefire-provider</artifactId>
<version>1.0.3</version>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>5.1.0-M1</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</pluginManagement>
</build>
<dependencies>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>5.1.0-RC1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>5.1.0-RC1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-module-junit4</artifactId>
<version>1.6.6</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-api-mockito2</artifactId>
<version>1.6.6</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>
由于我使用的是 JUnit5，因此我只能使用 SureFire 插件通过以下命令从命令行运行测试:mvn clean test
我创建了这两个非常简单的类:
public class Created {
private String message;
public Created(String message) {
this.message = message;
}
public String getMessage() {
return this.message;
}
}
public class Creator {
public Created create() {
return new Created("Another message");
}
}
当我运行以下测试时，它失败了。
@RunWith(PowerMockRunner.class)
@PrepareForTest(Creator.class)
public class RunnerTest {
@Test
public void test() throws Exception {
Creator creator = new Creator();
Created created = mock(Created.class);
when(created.getMessage()).thenReturn("The expected message");
whenNew(Created.class).withAnyArguments().thenReturn(created);
Created aNewlyCreatedObject = creator.create();
assertEquals("The expected message", aNewlyCreatedObject.getMessage());
}
}
看起来构造函数调用没有被拦截，因为 Mockito 没有代理它。我尝试了不同版本的依赖项，但没有成功。我还尝试使用以下方法更改代码:
whenNew(Created.class).withArguments("Another message").thenReturn(created);
或
whenNew(Created.class).withArguments(anyString()).thenReturn(created);
但是这些方法都没有改变测试的结果。
有人可以帮我解决这个问题吗？
谢谢
最佳答案
事实证明，降级到 JUnit4 解决了问题。
下面是用于成功运行测试的最终 pom.xml。当我尝试使用 1.6.6、1.7.1 和 2.0.0-beta.5 时，更改 PowerMock 版本似乎没有任何效果。我将向 Powermock 团队发布错误。
<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>testingPowerMock</groupId>
<artifactId>constructorMocking</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>TestingPowerMock</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.20.1</version>
<dependencies>
<dependency>
<groupId>org.apache.maven.surefire</groupId>
<artifactId>surefire-junit47</artifactId>
<version>2.20.1</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</pluginManagement>
</build>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-module-junit4</artifactId>
<version>1.7.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-api-mockito2</artifactId>
<version>1.7.1</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>
关于constructor - PowerMock + Mockito 模拟构造函数不起作用，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/48794259/