Do no use sanitizers in tests by default (#735)

* Run gtest_test_discovery pre test instead of post build

The current behavior does not work well with parallel builds using `make`.

* Disable sanitizers for testing by default.

They lead to segfaults and issues with dynamic loading sometimes ...

tests/CMakeLists.txt

@@ -17,7 +17,7 @@ if (NOT N EQUAL 0)
     )
 endif ()
 
-option(KAMPING_TEST_ENABLE_SANITIZERS "Enable undefined behavior sanitizer and address sanitizer." ON)
+option(KAMPING_TEST_ENABLE_SANITIZERS "Enable undefined behavior sanitizer and address sanitizer." OFF)
 
 # Registering tests without MPI:
 kamping_register_test(test_checking_casts FILES checking_casts_test.cpp)

tests/cmake/KampingTestHelper.cmake

@@ -24,7 +24,7 @@ function (kamping_register_test KAMPING_TARGET_NAME)
     add_executable(${KAMPING_TARGET_NAME} ${KAMPING_FILES})
     target_link_libraries(${KAMPING_TARGET_NAME} PRIVATE gtest gtest_main gmock kamping_base)
     target_compile_options(${KAMPING_TARGET_NAME} PRIVATE ${KAMPING_WARNING_FLAGS})
-    gtest_discover_tests(${KAMPING_TARGET_NAME} WORKING_DIRECTORY ${PROJECT_DIR})
+    gtest_discover_tests(${KAMPING_TARGET_NAME} WORKING_DIRECTORY ${PROJECT_DIR} DISCOVERY_MODE PRE_TEST)
     kamping_set_kassert_flags(${KAMPING_TARGET_NAME} ${ARGN})
     if (NOT ${KAMPING_NO_GLIBCXX_DEBUG_CONTAINERS})
         target_compile_definitions(${KAMPING_TARGET_NAME} PRIVATE -D_GLIBCXX_DEBUG)