Getting Class not found in module 'app'

Question

I'm getting below error while unit testing-

    Exception in thread "main" java.lang.NoClassDefFoundError: junit/textui/ResultPrinter
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:191)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:116)
Caused by: java.lang.ClassNotFoundException: junit.textui.ResultPrinter
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)

Project structure is- enter image description here

After some investigation in Run Configuration came to know its taking wrong module(main.java.com.example.dexter.sunshine.app) while running this unit case. How can we change this module?

possible duplicate of [Exception in thread "main" java.lang.NoClassDefFoundError: junit/textui/ResultPrinter](http://stackoverflow.com/questions/19516289/exception-in-thread-main-java-lang-noclassdeffounderror-junit-textui-resultpr) — Divers, May 17 '15 at 18:00

score 5 · Answer 1 · answered Oct 21 '15 at 18:12

5

I had a similar issue trying to run a groovy test suite.

Try right clicking the java directory under src/androidTest/java and choosing mark directory as -> test sources root

answered Oct 21 '15 at 18:12

Eric Francis

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Excellent. I would add, that we should use the *mark directory as source root* command, too, for the root of the tested files. http://stackoverflow.com/a/36057080/715269. – Gangnus Mar 17 '16 at 10:08

score 4 · Answer 2 · answered Jul 21 '15 at 00:22

I had the same problem and had to look for this for a little bit, and here is what I found.

Go to Run -> Edit Configuration ... to open Run/Debug Configurations.

From there you can either modify your current configurations (whether for JUnit, Android Tests, or Android Application), or you can add a new one as you need. I am sure you can change the class name there.

Getting Class not found in module 'app'

2 Answers2