test: fix IOError about Tempfile closed when GC #4515
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`Tempfile#binmode` returns `File` object, not own `Tempfile` object. So, GC will cause its finalizer and the file can be closed during the test. This is the cause why these tests sometimes fail by `IOError: closed stream`. Signed-off-by: Daijiro Fukuda <fukuda@clear-code.com>
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@kenhys Could you please review this? |
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Which issue(s) this PR fixes:
None.
What this PR does / why we need it:
Tempfile#binmodereturnsFileobject, not ownTempfileobject.So, GC will cause its finalizer and the file can be closed during the test.
This is the cause why these tests sometimes fail by
IOError: closed stream.Docs Changes:
Not needed.
Release Note:
Not needed.