Intellij - fix for Error running unit tests. Command line is too long. Shorten the command line via JAR manifest or via a classpath file and rerun.

Problem

I downloaded some project from github, imported it using maven and got an error when I tried run unit test.

Error message:

Error running UserRepositoryTest.someTest. Command line is too long. 
Shorten the command line via JAR manifest or via a classpath file and rerun.

Error screenshot: 

Solution

To solve the problem we need to change Shorten command line option to JAR manifest - java-cp classpath.jar className [args], the default one is: none - java [options] className [args].

Steps:

1. Edit configuration of the test.
2. Click on 'Modify options' and select 'Shorten command line'.
3. Select JAR manifest - java-cp classpath.jar className [args] from Shorten command line options.
4. Run the test again with success.

The same solution with screenshot steps.

Step 1

Edit configuration of the test.

Step 2

Click on 'Modify options' and select 'Shorten command line'.

Step 3

Select JAR manifest - java-cp classpath.jar className [args] from Shorten command line options.

Step 4

Run the test again with success.