Unit tests coverage using Jacoco for test classes written using Powermock

问题

I am trying to get the code coverage report on the sonarqube dashboard on jenkins. The code coverage report is coming up but showing only 4.6% coverage. On investigating I found out that the test classes written using PowerMocks are getting skipped.

On further investigation I found that "JaCoCo doesn't play well with dynamically modified/created classes (this is the way how powermock works). This is a known limitation we can't currently do anything about".

Is there any work around for this so that I can get proper code coverage for test classes written using PowerMocks too.

回答1:

Simple answer: no, there isn't.

Long answer - boils down to these options:

have look into this Wiki page by the PowerMock team - maybe maybe "offline instrumentation" works out for you.
hope that the corresponding bug gets fixed at some point (I wouldn't hold my breath on that)
get rid of your dependency to PowerMock(ito) - by refactoring and improving your production code
[ I think I evaluated various coverage tools long time ago; and there was one commercial one that claims to work even with PowerMock. But I don't recall any specifics. So I am basically saying: there might be a minuscule chance that another, proprietary coverage tool works with PowerMock ]

回答2:

I have managed to generate PowerMock coverage with Jacoco, using powermock-module-javaagent.

Just make sure you put powermock agent after jacoco agent:

<artifactId>maven-surefire-plugin</artifactId>
            <configuration>
                <useSystemClassLoader>true</useSystemClassLoader>
                <argLine>${jacocoArgLine} -javaagent:${settings.localRepository}/org/powermock/powermock-module-javaagent/${powermock.version}/powermock-module-javaagent-${powermock.version}.jar -noverify</argLine>
...

If you want to see an example, take a look at this project: https://github.com/jfcorugedo/sonar-scanner

Here you can see that sonar takes into account static methods and new statements mocked by PowerMock:

If you want to mock newstatements make sure you use PowerMockRule instead of PowerMockRunner.

Take a look at this test

来源：https://stackoverflow.com/questions/43868844/unit-tests-coverage-using-jacoco-for-test-classes-written-using-powermock

标签

java

maven

junit

powermock

jacoco