ros2 test_error ai_generated true

colcon test: No test output files found in 'build/my_package/test_results'

ID: ros2/colcon-test-missing-test-output

Also available as: JSON · Markdown · 中文
85%Fix Rate
82%Confidence
1Evidence
2024-01-10First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
ROS2 Humble active — — —
ROS2 Iron active — — —
ROS2 Rolling active — — —

Root Cause

The test runner (e.g., pytest, gtest) did not produce output files in the expected directory because tests failed to run, were skipped, or the CMake/ament test configuration did not set up output generation correctly.

generic

中文

测试运行器（如pytest、gtest）未在预期目录中生成输出文件，因为测试未能运行、被跳过，或CMake/ament测试配置未正确设置输出生成。

Official Documentation

https://docs.ros.org/en/humble/Tutorials/Intermediate/Testing/Testing.html

Workarounds

  1. 85% success Check if the test executable exists and can run: 'colcon test --packages-select my_package' and look for error messages in the console output. If tests are C++ gtest, ensure 'add_rostest' or 'ament_add_gtest' is used in CMakeLists.txt. 
    Check if the test executable exists and can run: 'colcon test --packages-select my_package' and look for error messages in the console output. If tests are C++ gtest, ensure 'add_rostest' or 'ament_add_gtest' is used in CMakeLists.txt.
  2. 90% success Rebuild the package with '--cmake-args -DBUILD_TESTING=ON' and then run tests again. This ensures test targets are built. 
    Rebuild the package with '--cmake-args -DBUILD_TESTING=ON' and then run tests again. This ensures test targets are built.
  3. 80% success For Python packages, ensure 'setup.py' or 'setup.cfg' has a 'test' section pointing to the correct test directory, and run 'colcon test' from the workspace root. 
    For Python packages, ensure 'setup.py' or 'setup.cfg' has a 'test' section pointing to the correct test directory, and run 'colcon test' from the workspace root.

中文步骤

  1. 检查测试可执行文件是否存在并可运行：'colcon test --packages-select my_package'，并在控制台输出中查找错误消息。如果是C++ gtest，确保在CMakeLists.txt中使用了'add_rostest'或'ament_add_gtest'。
  2. 使用'--cmake-args -DBUILD_TESTING=ON'重新构建包，然后重新运行测试。这确保测试目标被构建。
  3. 对于Python包，确保'setup.py'或'setup.cfg'中有指向正确测试目录的'test'部分，并从工作区根目录运行'colcon test'。

Dead Ends

Common approaches that don't work:

  1. Running 'colcon test' with '--event-handlers console_direct+' to see all output, but still no test results 80% fail

    This only increases verbosity; it does not fix the underlying issue of tests not producing output files.

  2. Manually creating the test_results directory to satisfy colcon 95% fail

    The directory must contain actual test output files; an empty directory does not resolve the error.