Mock final method - Mockito

Question

I want to mock final method of a class. I tried

PowerMockito.mock(mockedClass.class)

But it is not working for me. It is giving NullPointerException. I am using TestNG to run my test cases.

Duplication of https://stackoverflow.com/questions/3793791/final-method-mocking — Oleg Cherednik, Nov 29 '17 at 06:56
Just a little detail: PowerMockito helps you solve problems that you should not have. It's kind of like putting perfume on something that stinks. You might not smell it anymore, but the underlying problem is still there. Sometimes that's life, especially with less-than-well designed external libraries, but if you can do it another way, chances are, that way is better. — Florian Schaetz, Nov 29 '17 at 07:06
Possible duplicate of [Final method mocking](https://stackoverflow.com/questions/3793791/final-method-mocking) — David Rawson, Nov 29 '17 at 19:53

score 4 · Answer 1 · answered Nov 29 '17 at 08:13

4

According to Mockito documentation on final types and methods here it is possible to enable mocking of final classes and final methods by use the following dependency mockito-inline instead of mockito-core. I tried to do that and succeeded in mocking both a final class and a final method even without PowerMockito.

I used the following dependency

    <dependency>
        <groupId>org.mockito</groupId>
        <artifactId>mockito-inline</artifactId>
        <version>2.12.0</version>
        <scope>test</scope>
    </dependency>

and ran tests using JDK 8.

Perhaps that may help you.

answered Nov 29 '17 at 08:13

CDV

106
3

can you tell me where can I add this depedency? – priyankacharoliya Nov 29 '17 at 08:18
what build tool do you use to run your tests? – CDV Nov 29 '17 at 08:21
I am using TestNG – priyankacharoliya Nov 29 '17 at 08:24
I mean Maven, Gradle or something like that. Do you have pom.xml or build.gradle in your project ? – CDV Nov 29 '17 at 08:28
No, I don't hjave such files. – priyankacharoliya Nov 29 '17 at 08:30
And how do you run your project - from IntelliJ IDEA, Eclipse or any other way ? – CDV Nov 29 '17 at 08:37
I am running it from Eclipse. – priyankacharoliya Nov 29 '17 at 08:40
And how do you add Mockito to your project ? As a jar file or some other way ? – CDV Nov 29 '17 at 08:46
As a jar I have added Mockito. "mockito-all-1.9.5.jar" – priyankacharoliya Nov 29 '17 at 08:56
OK, please try to upgrade your mockito jar to version 2.12.0 and include one more jar - "mockito-inline-2.12.0.jar" that can be downloaded from this page: https://mvnrepository.com/artifact/org.mockito/mockito-inline/2.12.0. – CDV Nov 29 '17 at 09:04
Ok. I have upgraded my mockito.jar. But it is giving error while running my project. – priyankacharoliya Nov 29 '17 at 09:18
Error comes when I am addig mockito-inline-2.12.0.jar – priyankacharoliya Nov 29 '17 at 09:21
Please could you provide these errors ? – CDV Nov 29 '17 at 09:26
FAILED CONFIGURATION: @BeforeClass setUp java.lang.ExceptionInInitializerError Caused by: java.lang.NullPointerException at org.mockito.internal.configuration.plugins.Plugins.getStackTraceCleanerProvider(Plugins.java:17) at org.mockito.internal.exceptions.stacktrace.StackTraceFilter.(StackTraceFilter.java:21) – priyankacharoliya Nov 29 '17 at 09:28
Pretty strange, perhaps after upgrade it conflicts with some of other dependencies - do you still keep powermock dependency in your project ? – CDV Nov 29 '17 at 09:40
I need to keep. Because I want to mock static method. – priyankacharoliya Nov 29 '17 at 09:48
OK, please try to upgrade powermock either. Here is a page to download jar from: https://mvnrepository.com/artifact/org.powermock/powermock-api-mockito/1.7.3 It seems to be compatible with mockito 2.12.0 version. In case it won't work, please share your code (if it is possible) via GitHub or some other public service - that will help to solve your issue. – CDV Nov 29 '17 at 09:57

Mock final method - Mockito

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