builds, but No tests were found

[opmtk]

Describe the bug

I started to write a simple test for my project, below of my top-level project. On the bottom of this top-level CmakeLists.txt, I do:

make_minimum_required(VERSION 3.28)
project(cool_app)
...
# Unit tests
add_subdirectory(test)

The test sub-dir contains the CMakeLists.txt:

cmake_minimum_required(VERSION 3.28)

set(PROJECT_UNIT_TESTS_NAME ${CMAKE_PROJECT_NAME}_unit_tests)
project(${PROJECT_UNIT_TESTS_NAME} LANGUAGES CXX VERSION 0.0.1)

find_package(Catch2 3 REQUIRED)

include(CTest)
include(Catch)

add_executable(${PROJECT_UNIT_TESTS_NAME} test1.cpp)
target_link_libraries(${PROJECT_UNIT_TESTS_NAME} PRIVATE Catch2::Catch2WithMain)

enable_testing()
catch_discover_tests(${PROJECT_UNIT_TESTS_NAME}
    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/build
)

After successfully build I want to run it:

$ ctest --test-dir ./build
Internal ctest changing into directory: /home/${USERNAME}/work/my_project/build
Test project /home/${USERNAME}/work/my_project/build
No tests were found!!!
$ ls -la build/test/cool_app_unit_tests
-rwxrwxr-x 1 ${USERNAME} ${USERNAME} 1133056 Sep 27 20:10 build/test/cool_app_unit_tests*

So, it exist but isn't found finally.

Expected behavior

running the test

Platform information:

• OS: Ubuntu 24.04.1 LTS
• Compiler+version: GCC 13
• Catch version: *3.4.0-1build1 (Ubuntu shipped)

Additional context

I've checked the docs and Stackoverflow without success.