test_low_pass_filter is flaky

[christophfroehlich]

2024-09-12T02:24:56.9259275Z test 4
2024-09-12T02:24:56.9259495Z     Start 4: test_low_pass_filter
2024-09-12T02:24:56.9259701Z 
2024-09-12T02:24:56.9263997Z 4: Test command: /usr/bin/python3 "-u" "/opt/ros/jazzy/share/ament_cmake_test/cmake/run_test.py" "/home/runner/work/ros2_control_ci/ros2_control_ci/.work/target_ws/build/control_toolbox/test_results/control_toolbox/test_low_pass_filter.gtest.xml" "--package-name" "control_toolbox" "--output-file" "/home/runner/work/ros2_control_ci/ros2_control_ci/.work/target_ws/build/control_toolbox/test_results/control_toolbox/test_low_pass_filter.txt" "--command" "/home/runner/work/ros2_control_ci/ros2_control_ci/.work/target_ws/build/control_toolbox/test_low_pass_filter" "--ros-args" "--params-file" "/home/runner/work/ros2_control_ci/ros2_control_ci/.work/target_ws/src/ros-controls/control_toolbox/test/control_filters/test_low_pass_filter_parameters.yaml" "--" "--gtest_output=xml:/home/runner/work/ros2_control_ci/ros2_control_ci/.work/target_ws/build/control_toolbox/test_results/control_toolbox/test_low_pass_filter.gtest.xml"
2024-09-12T02:24:56.9268243Z 4: Working Directory: /home/runner/work/ros2_control_ci/ros2_control_ci/.work/target_ws/build/control_toolbox
2024-09-12T02:24:56.9268867Z 4: Test timeout computed to be: 60
2024-09-12T02:24:56.9269860Z 4: -- run_test.py: invoking following command in '/home/runner/work/ros2_control_ci/ros2_control_ci/.work/target_ws/build/control_toolbox':
2024-09-12T02:24:56.9272579Z 4:  - /home/runner/work/ros2_control_ci/ros2_control_ci/.work/target_ws/build/control_toolbox/test_low_pass_filter --ros-args --params-file /home/runner/work/ros2_control_ci/ros2_control_ci/.work/target_ws/src/ros-controls/control_toolbox/test/control_filters/test_low_pass_filter_parameters.yaml -- --gtest_output=xml:/home/runner/work/ros2_control_ci/ros2_control_ci/.work/target_ws/build/control_toolbox/test_results/control_toolbox/test_low_pass_filter.gtest.xml
2024-09-12T02:24:56.9274648Z 4: [==========] Running 4 tests from 1 test suite.
2024-09-12T02:24:56.9275078Z 4: [----------] Global test environment set-up.
2024-09-12T02:24:56.9275490Z 4: [----------] 4 tests from LowPassFilterTest
2024-09-12T02:24:56.9275988Z 4: [ RUN      ] LowPassFilterTest.TestLowPassWrenchFilterAllParameters
2024-09-12T02:24:56.9276813Z 4: [WARN] [1726107836.863870147] [TestLowPassWrenchFilterAllParameters]: Filter TestLowPassFilter already being reconfigured
2024-09-12T02:24:56.9277670Z 4: [       OK ] LowPassFilterTest.TestLowPassWrenchFilterAllParameters (14 ms)
2024-09-12T02:24:56.9278330Z 4: [ RUN      ] LowPassFilterTest.TestLowPassWrenchFilterMissingParameter
2024-09-12T02:24:56.9279537Z 4: [ERROR] [1726107836.870652884] [TestLowPassWrenchFilterMissingParameter.TestLowPassFilter]: LowPass filter cannot be configured: parameter 'sampling_frequency' is not initialized
2024-09-12T02:24:56.9280826Z 4: [       OK ] LowPassFilterTest.TestLowPassWrenchFilterMissingParameter (6 ms)
2024-09-12T02:24:56.9281544Z 4: [ RUN      ] LowPassFilterTest.TestLowPassWrenchFilterInvalidThenFixedParameter
2024-09-12T02:24:57.8923895Z 4: [ERROR] [1726107836.876615026] [TestLowPassWrenchFilterInvalidThenFixedParameter.TestLowPassFilter]: LowPass filter cannot be configured: Invalid value set during initialization for parameter 'sampling_frequency': Parameter 'sampling_frequency' with the value '0' must be greater than '0'
2024-09-12T02:24:57.8925931Z 4: [       OK ] LowPassFilterTest.TestLowPassWrenchFilterInvalidThenFixedParameter (5 ms)
2024-09-12T02:24:57.8926730Z 4: [ RUN      ] LowPassFilterTest.TestLowPassFilterComputation
2024-09-12T02:24:57.8927310Z 4/5 Test #4: test_low_pass_filter .............***Timeout  60.04 sec

normally this finishes in a couple of ms

https://github.com/ros-controls/ros2_control_ci/issues/137