JUnit: NoClassDefFoundError: org/junit/runner/manipulation/Filter

Question

When I try to run some unit tests, the following error is raised:

java.lang.NoClassDefFoundError: org/junit/runner/manipulation/Filter
    at java.lang.Class.for         


        

Answer 1

Even I was facing the same issue, so try the below steps -

1. Right click the project in Package Explorer, and click Properties.
2. Click the Libraries tab.
3. Click the Add library button.
4. Select JUnit and click Next.
5. Select JUnit 4 (that's what I am using).
6. Click finish.
7. Now right click the file containing unit tests and select Properties.
8. Under the Run/Debug settings, remove any entries from the Launch Configurations for that file. Hit ok.

Hopefully you'll be able to run the tests now.