test: keep conditional-ramp fixture on direct I/O - #43
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What changed
Why
The fixture creates a tiny, page-hot file but is intended to exercise the O_DIRECT conditional-ramp branch. The new sample probe correctly classified that file as warm, bypassing O_DIRECT and making the ramp assertion fail on Linux. Sample-probe behavior is covered separately in
tests/test_sample_probe.py.Validation
pytest -q tests/test_parallel_read_integrity.py::TestConditionalRamp tests/test_sample_probe.py— 9 passed, 2 skippedpytest -m 'not gpu and not network' -q— 251 passed, 5 skipped, 5 deselectedpre-commit run --all-files— passed