exclude unittests from code coverage

CMakeModules/check_test.sh

@@ -9,7 +9,9 @@ HIDRA2_MINIMUM_COVERAGE=$3
 make ${TARGET}
 
 coverage=`cat ${BINARY_DIR}/${TARGET}.txt`
-
+if [ -z "$coverage" ]; then
+ coverage=0
+fi
 if (( coverage < HIDRA2_MINIMUM_COVERAGE )); then
 	exec >&2
 	echo

CMakeModules/testing_cpp.cmake

@@ -17,8 +17,9 @@ function(gtest target test_source_files test_libraries)
 	if(CMAKE_COMPILER_IS_GNUCXX)
 		include(CodeCoverage)
 		APPEND_COVERAGE_COMPILER_FLAGS()
+		set (COVERAGE_EXCLUDES 'unittests/*')
 		SETUP_TARGET_FOR_COVERAGE(NAME coverage-${target} EXECUTABLE test-${target} ${target})
-		add_test(NAME coveragetest-${target} 
+		add_test(NAME coveragetest-${target}
         		COMMAND ${CMAKE_MODULE_PATH}/check_test.sh
         		 coverage-${target} ${CMAKE_BINARY_DIR} ${HIDRA2_MINIMUM_COVERAGE} 
         		)