How can I mark skipped test case as fail in TestNG?

I am using sbt test to run TestNG test cases:

I get a testing result like this

===============================================
xxxx-test
Total tests run: 2, Failures: 0, Skips: 2
Configuration Failures: 1, Skips: 1
===============================================

[info] Passed: Total 2, Failed 0, Errors 0, Passed 0, Skipped 2
[success] Total time: 8 s, completed May 11, 2019 11:44:59 AM

The configuration failure is caused by an error in @BeforeClass phase.

The problem is my CI treat this result as passed.

How can I mark the whole test failed if any of my test cases skipped?