CTest not detecting tests

Question

I have a project with a structure

├── CMakeLists.txt ├── mzl.c ├── mzl.h └── tests     ├── CMakeLists.txt     ├── mzl-communication-test.c     ├── mzl-setup-test.c     ├── mzl-test-errors.c     └── mzl-test-errors.h 

Where the top directory CMakeLists.txt file is

project(mzl) cmake_minimum_required(VERSION 2.8)  add_subdirectory(tests)  # Enable testing for the project enable_testing()  # Find zmq find_library(ZMQ_LIB zmq REQUIRED) message(STATUS "ZMQ Library: ${ZMQ_LIB}")  # Find threading library set(CMAKE_THREAD_PREFER_PTHREAD ON) find_package(Threads REQUIRED) message(STATUS "Threading Library: ${CMAKE_THREAD_LIBS_INIT}")    # Set include directories for headers set     (     MZL_INCLUDE_DIRS     ${CMAKE_SOURCE_DIR}     CACHE STRING "MZL Include Directories"     ) include_directories(${MZL_INCLUDE_DIRS})  # Set source files set     (     MZL_SRC_FILES     mzl.c     )  # Add library add_library(${PROJECT_NAME} STATIC ${MZL_SRC_FILES})  # Link to zmq target_link_libraries(${PROJECT_NAME} ${ZMQ_LIB} ${CMAKE_THREAD_LIBS_INIT}) 

and tests/CMakeLists.txt is

# Use MZL Source Directories (mzl headers are in top directory) include_directories(${CMAKE_SOURCE_DIR})  # Variable from here is empty message(STATUS "MZL Include Directories: ${MZL_INCLUDE_DIRS}")  # Files common to all tests set ( TEST_COMMON_SOURCES     mzl-test-errors.c     )  # Library setup/shutdown testing set(SETUP_TEST_NAME mzl-setup-test) add_executable(${SETUP_TEST_NAME} ${TEST_COMMON_SOURCES} ${SETUP_TEST_NAME}.c) target_link_libraries(${SETUP_TEST_NAME} ${PROJECT_NAME} ${ZMQ_LIB}) add_test(${SETUP_TEST_NAME} ${SETUP_TEST_NAME})  # Communcations test set(COMMUNICATION_TEST_NAME mzl-communication-test) add_executable(${COMMUNICATION_TEST_NAME} ${TEST_COMMON_SOURCES}     ${COMMUNICATION_TEST_NAME}.c) target_link_libraries(${COMMUNICATION_TEST_NAME} ${PROJECT_NAME}         ${CMAKE_THREAD_LIBS_INIT} ${ZMQ_LIB}) add_test(${COMMUNICATION_TEST_NAME}  ${COMMUNICATION_TEST_NAME}) 

Everything worked fine before I added the second test mzl-communication-test. After adding it and the lines in the tests/CMakeLists.txt after # Communications test, running ctest did nothing extra -- it still only ran the first test.

After deleting the build directory and running cmake again, I get no errors for the initial CMake run, but running make runs CMake again, resulting in an error with CMake:

CMake Error: Parse error in cache file build/CMakeCache.txt. Offending entry: include 

followed by a Make error:

Makefile:203: recipe for target 'cmake_check_build_system' failed make: *** [cmake_check_build_system] Error 1 

Running make again results in everything being built, including the tests; however, running ctest results in

Test project build No tests were found!!! 

The issue seems to be with something that I am doing with CMake, but can't figure out what to do from here as I can't see anything that I'm doing differently than when it was originally working. Even my last commit to git, which was working when I committed it, is no longer working.

Answer 1

You need to move the enable_testing() call to be before you do add_subdirectory(tests)

# Enable testing for the project enable_testing()  add_subdirectory(tests)