Powermock: Found duplicate (but equal) classes in [org.powermock:powermock-api-mockito-common:1.7.3, org.powermock:powermock-api-mockito2:1.7.3]

[markkolich]

Haven't tried with 1.7.4 (yet), but the duplicate-finder-maven-plugin complains of the following when running a duplicate finder check on my test classpath:

[INFO] Checking test classpath
[WARNING] Found duplicate (but equal) classes in [org.powermock:powermock-api-mockito-common:1.7.3, org.powermock:powermock-api-mockito2:1.7.3]:
[WARNING]   org.powermock.api.mockito.expectation.WithExpectedArguments
[WARNING]   org.powermock.api.mockito.expectation.WithoutExpectedArguments
[WARNING] Found duplicate classes/resources in test classpath.

The relevant entries from my pom are as follows:

<dependency>
    <groupId>org.mockito</groupId>
    <artifactId>mockito-core</artifactId>
    <version>2.8.9</version>
</dependency>

<dependency>
    <groupId>org.powermock</groupId>
    <artifactId>powermock-api-mockito2</artifactId>
    <version>1.7.3</version>
</dependency>
<dependency>
    <groupId>org.powermock</groupId>
    <artifactId>powermock-module-junit4</artifactId>
    <version>1.7.3</version>
</dependency>

Sure enough, it looks like both powermock-api-mockito2:jar:1.7.3 and one of its direct dependencies powermock-api-mockito-common:jar:1.7.3 contains the same .class files for the following:

• org.powermock.api.mockito.expectation.WithExpectedArguments
• org.powermock.api.mockito.expectation.WithoutExpectedArguments

[root@bb6939b2801f ~]# jar tvf .m2/repository/org/powermock/powermock-api-mockito2/1.7.3/powermock-api-mockito2-1.7.3.jar | grep -i with
   403 Sat Sep 16 17:39:16 UTC 2017 org/powermock/api/mockito/expectation/WithoutExpectedArguments.class
   469 Sat Sep 16 17:39:16 UTC 2017 org/powermock/api/mockito/expectation/WithExpectedArguments.class

[root@bb6939b2801f ~]# jar tvf .m2/repository/org/powermock/powermock-api-mockito-common/1.7.3/powermock-api-mockito-common-1.7.3.jar | grep -i with
   403 Sat Sep 16 17:39:08 UTC 2017 org/powermock/api/mockito/expectation/WithoutExpectedArguments.class
   469 Sat Sep 16 17:39:08 UTC 2017 org/powermock/api/mockito/expectation/WithExpectedArguments.class

It is expected that both powermock-api-mockito2:jar:1.7.3 and powermock-api-mockito-common:jar:1.7.3 contain duplicate+identical copies of these .class files?

[markkolich]

Maven duplicate-finder-maven-plugin workaround:

<ignoredClassPatterns>
  <ignoredClassPattern>org\.powermock\.api\.mockito\.expectation\.With(out)?ExpectedArguments</ignoredClassPattern>
</ignoredClassPatterns>

[Beanow]

Seems to crash my test builds for android tests.

Program type already present: org.powermock.api.mockito.expectation.WithoutExpectedArguments
Message{kind=ERROR, text=Program type already present: org.powermock.api.mockito.expectation.WithoutExpectedArguments, sources=[Unknown source file], tool name=Optional.of(D8)}

For 1.7.4

[peterbetos]

This is still happening. Are the duplicated classes addressed? Thanks.

[markkolich]

@peterbetos it's definitely still an issue in 1.7.3 and 1.7.4. However, I haven't tried with the latest release, which as of this writing appears to be 2.0.0-RC.1:

https://github.com/powermock/powermock/releases/tag/powermock-2.0.0-RC.1

[sevenfirezzz]

I have met the same problem, do you fix it?