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bpo-14853: add back the stdin test, skip if stdin is redirected #27694

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merged 2 commits into from Aug 9, 2021
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bpo-14853: add back the stdin test, skip if stdin is redirected #27694

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bpo-14853: add back the stdin test, skip if stdin is redirected
iritkatriel Aug 9, 2021
25020d1
clearer asserts
iritkatriel Aug 9, 2021
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16 changes: 16 additions & 0 deletions Lib/test/test_file.py
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Expand Up @@ -154,6 +154,22 @@ def testModeStrings(self):
f.close()
self.fail('%r is an invalid file mode' % mode)

def testStdin(self):
if sys.platform == 'osf1V5':
# This causes the interpreter to exit on OSF1 v5.1.
self.skipTest(
' sys.stdin.seek(-1) may crash the interpreter on OSF1.'
' Test manually.')

if not sys.stdin.isatty():
# Issue 14853: stdin becomes seekable when redirected to a file
self.skipTest('stdin must be a TTY in this test')

with self.assertRaises((IOError, ValueError)):
sys.stdin.seek(-1)
with self.assertRaises((IOError, ValueError)):
sys.stdin.truncate()

def testBadModeArgument(self):
# verify that we get a sensible error message for bad mode argument
bad_mode = "qwerty"
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