CMakeLists.txt

cmake_minimum_required(VERSION 3.5)
project (testexample VERSION 0.0.0 LANGUAGES CXX) 

add_library(test_main OBJECT test_main.cpp)

add_executable(test1 test1.cpp $<TARGET_OBJECTS:test_main>)
add_test(NAME test1 COMMAND test1)

add_executable(test2 test2.cpp $<TARGET_OBJECTS:test_main>)
add_test(NAME test2 COMMAND test2 )