better detect read file #34

Job	Run time
test (ubuntu-latest, 26.3, false)	31s
test (ubuntu-latest, 27.2, false)	30s
test (ubuntu-latest, 28.2, false)	30s
test (ubuntu-latest, 29.3, false)	34s
test (macos-latest, 26.3, false)	2m 4s
test (macos-latest, 27.2, false)	1m 42s
test (macos-latest, 28.2, false)	2m 16s
test (macos-latest, 29.3, false)	1m 51s
test (windows-latest, 26.3, false)	2m 6s
test (windows-latest, 27.2, false)	54s
test (windows-latest, 28.2, false)	43s
test (windows-latest, 29.3, false)	47s
test (ubuntu-latest, snapshot, true)	27s
test (macos-latest, snapshot, true)	1m 37s
test (windows-latest, snapshot, true)	34s
	17m 6s

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