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examples: run Python examples 07 and 08 as CTest smoke tests

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Neither Python example was registered as a test, so `ctest -L examples`
in CI skipped them entirely -- which is how 08's missing Python node
went unnoticed.

Add a kpn_python_example() helper (gated on KPN_BUILD_PYTHON) that runs
each script with PYTHONPATH pointed at the freshly-built module, so it
does not depend on cwd or a hard-coded build/python path, and register
07 and 08. Also del the network in 07 for deterministic teardown.
This commit is contained in:
Duncan Tourolle 2026-07-04 14:44:30 +02:00
parent 2b0873b61b
commit 298c9e770b
2 changed files with 27 additions and 1 deletions
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5
examples/07_python_network/example.py
View File

@ -30,3 +30,8 @@ net.build()
net.start() net.start()
time.sleep(0.1) time.sleep(0.1)
net.stop() net.stop()
# Drop the network deterministically: it holds the Python callable, which forms
# a reference cycle via globals(). Deleting the global breaks it so the network
# is reclaimed now rather than lingering to interpreter shutdown.
del net

23
examples/CMakeLists.txt
View File

@ -13,6 +13,25 @@ function(kpn_example name)
) )
endfunction() endfunction()
# Register a Python example script as a CTest smoke test. Runs the script with
# PYTHONPATH pointing at the freshly-built kpn_python module, so it does not
# depend on the caller's working directory or a hard-coded "build/python" path.
function(kpn_python_example name)
if(NOT KPN_BUILD_PYTHON)
return()
endif()
add_test(
NAME example_${name}
COMMAND ${CMAKE_COMMAND} -E env
"PYTHONPATH=$<TARGET_FILE_DIR:kpn_python>"
${Python_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/${name}/example.py
)
set_tests_properties(example_${name} PROPERTIES
TIMEOUT 15
LABELS examples
)
endfunction()
kpn_example(01_hello_pipeline) kpn_example(01_hello_pipeline)
kpn_example(02_named_ports) kpn_example(02_named_ports)
kpn_example(03_multi_output) kpn_example(03_multi_output)
@ -31,7 +50,9 @@ if(KPN_WEB_DEBUG)
target_link_libraries(14_debug_hub PRIVATE kpn) target_link_libraries(14_debug_hub PRIVATE kpn)
kpn_target_enable_web_debug(14_debug_hub) kpn_target_enable_web_debug(14_debug_hub)
endif() endif()
# 07 and 08 are Python scripts — no compiled target needed. # 07 and 08 are Python scripts — no compiled target, but run as smoke tests.
kpn_python_example(07_python_network)
kpn_python_example(08_python_subport)
# 09 requires OpenCV — only build if found # 09 requires OpenCV — only build if found
find_package(OpenCV QUIET COMPONENTS core imgproc highgui videoio) find_package(OpenCV QUIET COMPONENTS core imgproc highgui videoio)