degesch: add a unit test for message wrapping algo

CMakeLists.txt

@@ -122,6 +122,23 @@ target_link_libraries (degesch ${project_libraries})
 add_executable (kike kike.c kike-replies.c ${common_sources} ${common_headers})
 target_link_libraries (kike ${project_libraries})
 
+# Tests
+function (make_tests_for target_name)
+	get_target_property (sources   ${target_name} SOURCES)
+	get_target_property (libraries ${target_name} LINK_LIBRARIES)
+
+	set (test test-${target_name})
+	add_executable (${test} ${sources})
+	target_link_libraries (${test} ${libraries})
+	add_test (NAME ${test} COMMAND ${test})
+	set_target_properties (${test} PROPERTIES COMPILE_DEFINITIONS TESTING)
+endfunction (make_tests_for)
+
+include (CTest)
+if (BUILD_TESTING)
+	make_tests_for (degesch)
+endif (BUILD_TESTING)
+
 # Various clang-based diagnostics, loads of fake positives and spam
 file (GLOB clang_tidy_sources *.c)
 set (clang_tidy_checks misc-* readability-*