CI: Add Windows unit test job - #3723
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On Windows, Python's urlparse treats paths like 'C:\Users\...' as having scheme='c', which causes 'Unrecognized filesystem type in URI: c' errors. This adds a platform-guarded predicate that detects single-character alphabetic schemes on Windows and remaps them to 'file', enabling correct local filesystem routing. Fixes all three parse sites (_infer_file_io_from_scheme, PyArrowFileIO.parse_location, FsspecFileIO._get_fs_from_uri) and includes platform-conditional tests. Related: apache#2477, apache#1005
Enable the full unit test suite to pass on Windows (3803 passed, 0 failures). Changes: - Reduce RANDOM_LENGTH from 20 to 8 to stay under Windows MAX_PATH (260 chars) - Use warehouse.as_posix() in SQLite URIs for cross-platform path formatting - Close file handles before temp directory cleanup (Windows file locking) - Use os.path.abspath() in path assertions instead of hardcoded POSIX paths - Use raw paths instead of file: URIs in pyarrow test fixtures - Relax Rich box-drawing assertions to check content not formatting - Skip Kerberos tests on Windows (puresasl C lib unavailable) - Relax error message assertion ([Errno 2] vs [WinError 2]) Depends on apache#3721. Related: apache#2477
Adds a windows-latest job that runs the unit test suite on Python 3.12. Installs all extras except hive-kerberos (requires gssapi C library unavailable on Windows). Closes apache#2477
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Rationale
Adds
windows-latestto the Python CI workflow, enabling automated testing on Windows.Depends on:
Changes
Adds a
windows-unit-testjob to.github/workflows/python-ci.ymlthat:windows-latestwith Python 3.12hive-kerberos(requiresgssapi.hC library unavailable on Windows)Expected result
Locally verified: 3803 passed, 3 skipped, 0 failures on Windows.
Closes #2477