[issue3840] if TESTFN == "/tmp/@test", some tests fail

[Hirokazu Yamamoto]

Hirokazu Yamamoto <ocean-city at m2.ccsnet.ne.jp> added the comment:

Same happend in test_import.py too.

>test_support.TESTFN is /tmp/@test on cygwin
This was false information. There was a directry named @test, so
open(TESTFN, "w+") in test_support.py failed, "/tmp/@test" was used instead.

Several tests seem to assume TESTFN is relative path (filename?), so
maybe should we use @test2 as TESTFN if @test is not writable and vise
versa? (Or simply test fails if @test is not writable)

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title: test_urllib fails on cygwin -> if TESTFN == "/tmp/@test", some tests fail
versions:  -Python 2.5, Python 3.0

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue3840>
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