我还有最后一节课,大概是这样的:
public final class RainOnTrees{
public void startRain(){
// some code here
}
}
我在其他一些类中使用这个类,像这样:
public class Seasons{
RainOnTrees rain = new RainOnTrees();
public void findSeasonAndRain(){
rain.startRain();
}
}
在我的JUnit测试类Seasons.java中,我想模拟RainOnTrees类。我怎么能用Mockito做到这一点?
Mockito 2现在支持final类和方法!
但就目前而言,这只是一个“孵化”功能。它需要一些步骤来激活它,这些步骤在Mockito 2中的新内容中描述:
Mocking of final classes and methods is an incubating, opt-in feature. It uses a combination of Java agent instrumentation and subclassing in order to enable mockability of these types. As this works differently to our current mechanism and this one has different limitations and as we want to gather experience and user feedback, this feature had to be explicitly activated to be available ; it can be done via the mockito extension mechanism by creating the file src/test/resources/mockito-extensions/org.mockito.plugins.MockMaker containing a single line:
mock-maker-inline
After you created this file, Mockito will automatically use this new engine and one can do :
final class FinalClass {
final String finalMethod() { return "something"; }
}
FinalClass concrete = new FinalClass();
FinalClass mock = mock(FinalClass.class);
given(mock.finalMethod()).willReturn("not anymore");
assertThat(mock.finalMethod()).isNotEqualTo(concrete.finalMethod());
In subsequent milestones, the team will bring a programmatic way of using this feature. We will identify and provide support for all unmockable scenarios. Stay tuned and please let us know what you think of this feature!
在构建文件中添加以下内容:
如果使用gradle: build.gradle
testImplementation 'org.mockito:mockito-inline:2.13.0'
如果使用maven: pom.xml
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-inline</artifactId>
<version>2.13.0</version>
<scope>test</scope>
</dependency>
这是一个使mockito与final类一起工作的配置
如果您面临无法初始化内联字节伙伴模拟生成器。(Android不支持这个模拟生成器。)
将字节伙伴依赖项添加到构建中。gradle文件:
testImplementation 'net.bytebuddy:byte-buddy-agent:1.10.19'
src: https://mvnrepository.com/artifact/net.bytebuddy/byte-buddy