cmake: enable testing with CTests

Author: Connor Baker

CMakeLists.txt

@@ -78,13 +78,23 @@ target_compile_definitions(nanothread PRIVATE -DNANOTHREAD_BUILD=1)
 set_target_properties(nanothread PROPERTIES INTERPROCEDURAL_OPTIMIZATION_RELEASE TRUE)
 
 if (NANOTHREAD_ENABLE_TESTS)
-   add_subdirectory(tests)
+  include(CTest)
+  add_subdirectory(tests)
 endif()
 
-configure_file(nanothreadConfig.cmake "${CMAKE_CURRENT_BINARY_DIR}/nanothread/nanothreadConfig.cmake" COPYONLY)
+include(CMakePackageConfigHelpers)
+file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/nanothreadConfig.cmake.in" [=[
+@PACKAGE_INIT@
+include("${CMAKE_CURRENT_LIST_DIR}/nanothreadTargets.cmake")
+]=])
+configure_package_config_file(
+  "${CMAKE_CURRENT_BINARY_DIR}/nanothreadConfig.cmake.in"
+  "${CMAKE_CURRENT_BINARY_DIR}/nanothreadConfig.cmake"
+  INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/nanothread
+)
 install(
   FILES
-    nanothreadConfig.cmake
+    "${CMAKE_CURRENT_BINARY_DIR}/nanothreadConfig.cmake"
   DESTINATION
     ${CMAKE_INSTALL_LIBDIR}/cmake/nanothread
 )

nanothreadConfig.cmake

@@ -1,14 +1,18 @@
 add_executable(test_01 test_01.c)
 target_link_libraries(test_01 PRIVATE nanothread)
+add_test(NAME test_01 COMMAND test_01)
 
 add_executable(test_02 test_02.cpp)
 target_link_libraries(test_02 PRIVATE nanothread)
 target_compile_features(test_02 PRIVATE cxx_std_11)
+add_test(NAME test_02 COMMAND test_02)
 
 add_executable(test_03 test_03.cpp)
 target_link_libraries(test_03 PRIVATE nanothread)
 target_compile_features(test_03 PRIVATE cxx_std_14)
+add_test(NAME test_03 COMMAND test_03)
 
 add_executable(test_04 test_04.cpp)
 target_link_libraries(test_04 PRIVATE nanothread)
 target_compile_features(test_04 PRIVATE cxx_std_11)
+add_test(NAME test_04 COMMAND test_04)