JUnit 4 compile error in autograde

I’m trying to autograde using JUnit 4 in Java using the following repository:
In the assignment, I added this to setup: javac *.java
but I get this error from the autograder:
TestMain.java:3: error: package org.junit does not exist
I added the junit4.jar file to the directory but it still gets a compile error.

Thanks for any help!

javac -cp junit4.jar:. *.java fixed it. Thanks to support for the help!