Emma code coverage with JUnit and Powermock - junit

Question

I am using JUnit with Powermockito mocking.
I have to work on a CLI environment with maven or ant.
emma version: ema-2.0.5312
powermock version: powermock-mockito-1.5.1-full
junit version: junit-4.9
When I run junit through the following command, everything works find:
java org.junit.runner.JUnitCore some.package.ClassTest
However, when I used emma to check the code coverage:
java emmarun -cp $CLASSPATH -report txt org.junit.runner.JUnitCore some.package.ClassTest
I got the following error:
1) initializationError(some.pakage.ClassTest)
java.lang.ClassCastException: org.powermock.modules.junit4.PowerMockRunner cannot be cast to org.junit.runner.Runner
Other test classes without using powermock work fine.
Does anyone have some suggestion to this? thanks in advance.

Answer 1

while using powermock, you can not find out the coverage using Emma
See this discussion on developer's side

Answer 2

You can use MockitoJunitRunner and specify a rule to use PowerMock since Eclemma works along with MockitoJUnitRunner.
Something like this:
#RunWith(MockitoJUnitRunner.class) // This supports Eclemma Plugin. Powermock doesn't.
#PrepareForTest({/* StaticClasses for Powermock here */})
public class ClassTest {
// These two statements; the static block and #Rule make sure Powermock works along with Mockito!!
static {
PowerMockAgent.initializeIfNeeded();
}
#Rule
public PowerMockRule powerMockRule = new PowerMockRule();
#Mock // To mock dependent class
private MockClass mock;
#InjectMocks //To Inject all mocks in this class
private ClassUnderTest classObject;
//Rest of the code here.
}
Dependencies needed:
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-api-mockito</artifactId>
<version>1.6.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-module-junit4</artifactId>
<version>1.6.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.powermock</groupId>
<artifactId>powermock-module-junit4-rule-agent</artifactId>
<version>1.6.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
<version>1.10.19</version>
<scope>test</scope>
</dependency
Also you need to add this to the configurations under Coverage As -> Coverage Configurations -> Arguments.
Inside VM Arguments add -noverify and save.
for this to work with Jacoco use the following statement in your pom.xml .
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.18.1</version>
<configuration>
<argLine>${argLine} -noverify -javaagent:${settings.localRepository}/org/powermock/powermock-module-javaagent/1.6.2/powermock-module-javaagent-1.6.2.jar</argLine>
</configuration>
</plugin>