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Improve test disk usage and I/O in tests - #14269

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larsoner wants to merge 2 commits into
mne-tools:mainfrom
larsoner:test-io-reuse
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Improve test disk usage and I/O in tests#14269
larsoner wants to merge 2 commits into
mne-tools:mainfrom
larsoner:test-io-reuse

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@larsoner

@larsoner larsoner commented Sep 3, 2026

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I/O companion to #14265, a few low-hanging fruit for speeding up tests further:

  • change some _TempDir to tmp_path
  • copy fewer files (e.g. for subjects_dir_tmp, only copy fsaverage when needed)
  • add some raw/event crops when the test can still test reasonably with less data
  • cache reads of small data and reuse them with .copy in fixtures

Changes drafted by Claude Fable 5 and reviewed/iterated on by me

@larsoner
larsoner requested a review from sappelhoff as a code owner September 3, 2026 13:26
@larsoner larsoner changed the title Improve test disk usage and I/O Improve test disk usage and I/O in tests Sep 3, 2026
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