more robust command line interafce tests #37
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…t, black-box testing strategy that executes the script as a subprocess. The new test suite in `tests/test_cli.py` now verifies the script's stdout, stderr, and exit codes, providing you with more realistic and comprehensive coverage. While writing the new tests, I also discovered and fixed two bugs: - I added graceful error handling to the main function to prevent unhandled exceptions on invalid date input. - I replaced the permissive date-parsing regex with a stricter version to correctly reject invalid date formats.
…t because different versions of Python's `argparse` module produce different headers for the optional arguments section ('options:' vs. 'optional arguments:').
This commit makes the test more robust by checking for the presence of either header, ensuring the test is not dependent on the specific Python version used in the execution environment.
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…t, black-box testing strategy that executes the script as a subprocess.
The new test suite in
tests/test_cli.pynow verifies the script's stdout, stderr, and exit codes, providing you with more realistic and comprehensive coverage.While writing the new tests, I also discovered and fixed two bugs: