NoClassDefFoundError when using Powermock

java unit-testing junit easymock powermock
lukas picture lukas · Mar 13, 2011 · Viewed 40.4k times · Source

I'm running a junit test case using the PowerMock test runner. I'm using the following command line to execute it:

java -cp .:junit-4.9b2.jar:easymock-3.0.jar:powermock-easymock-1.4.8-full.jar org.junit.runner.JUnitCore SampleTest

When doing so I am receiving this error:

initializationError(SampleTest)
java.lang.NoClassDefFoundError: org/junit/internal/runners/TestClassRunner
...

How can I fix it?

Answer

RonK picture RonK · Jul 5, 2011

I just solved this one now, when I added the @RunWith(PowerMockRunner.class) attribute, eclipse automatically imported:

import org.powermock.modules.junit4.legacy.PowerMockRunner;

All I needed to do is change it to be:

import org.powermock.modules.junit4.PowerMockRunner;

And now it works fine with JUnit 4.8.2.

The 2nd runner is for when running with older versions of JUnit - specifically 4.3 and older.

Related questions

How to mock a static final variable using JUnit, EasyMock or PowerMock

I want to mock a static final variable as well as mock a i18n class using JUnit, EasyMock or PowerMock. How do I do that?

Read More
Powermock (With Easymock) no last call on a mock available

I am trying to just run a simple test case. I have the following method. public static void run(String[] args) throws Throwable { CommandLineArguments opts = CommandLineOptionProcessor.getOpts(args); } I will continue to build this method / test case as I go. …

Read More
EasyMock void method

I'm trying to use EasyMock to mock out some database interface so I can test the business logic off a wrapping method. I've been going ok with methods that return by using the following in my setup of my test. …

Read More