CMake build targets are added by “add_[executable,library,custom_target]” commands. Targets can be dynamically set by arbitrarily complex foreach(), if(), etc. logic. A list of tests enabled is retrieved by the BUILDSYSTEM_TARGETS directory property.

The variable “target_names” contains all the target names previously added in the CMakeLists.txt in the DIRECTORY scope.

get_property(target_names DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY BUILDSYSTEM_TARGETS)

get_property(test_names GLOBAL PROPERTY BUILDSYSTEM_TARGETS) will return an empty list–DIRECTORY scope must be used.