libnunit-cil-dev 2.6.4+dfsg-1 (amd64 binary) in ubuntu xenial

 NUnit is a unit testing framework for all .NET languages. It serves the
 same purpose as JUnit does in the Java world. It supports test
 categories, testing for exceptions and writing test results in plain
 text or XML.
 .
 This package contains development files for the Nunit library, and should
 be used for compilation