include copyright check in unit tests

CMakeLists.txt

@@ -67,6 +67,8 @@ endif()
 #add_custom_target (corsika_pre_build)
 #add_custom_command (TARGET corsika_pre_build PRE_BUILD COMMAND "${PROJECT_SOURCE_DIR}/pre_compile.py")
 
+# add call to do-interaction to run as unit-test-case
+add_test (NAME copyright_notices COMMAND "./do-copyright.py" WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
 
 find_package (Pythia8) # optional