libcunit1 2.1-3-dfsg-1 (s390x binary) in ubuntu xenial

 CUnit is a simple framework for incorporating test cases in your C
 code similar to JUnit or CppUnit. It provides C programmers a basic
 testing functionality with a flexible variety of user interfaces. It
 uses a simple framework for building test structures, and provides a
 rich set of assertions for testing common data types. In addition,
 several different interfaces are provided for running tests and
 reporting results.