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v0.5.1
v0.5.1
https://github.com/python/cpython
Revision 73acad1fa2634cb4ec77d8c98bdcd1a8b9c031ed authored by Giampaolo Rodolà on 10 February 2011, 18:42:36 UTC, committed by Giampaolo Rodolà on 10 February 2011, 18:42:36 UTC
1 parent 1fbd8e1
Tip revision: 73acad1fa2634cb4ec77d8c98bdcd1a8b9c031ed authored by Giampaolo Rodolà on 10 February 2011, 18:42:36 UTC
get rid of asyncore.dispatcher's debug attribute, which is no longer used (assuming it ever was).
get rid of asyncore.dispatcher's debug attribute, which is no longer used (assuming it ever was).
Tip revision: 73acad1
test_fileio.py
# Adapted from test_file.py by Daniel Stutzbach
import sys
import os
import errno
import unittest
from array import array
from weakref import proxy
from functools import wraps
from test.support import TESTFN, check_warnings, run_unittest, make_bad_fd
from _io import FileIO as _FileIO
class AutoFileTests(unittest.TestCase):
# file tests for which a test file is automatically set up
def setUp(self):
self.f = _FileIO(TESTFN, 'w')
def tearDown(self):
if self.f:
self.f.close()
os.remove(TESTFN)
def testWeakRefs(self):
# verify weak references
p = proxy(self.f)
p.write(bytes(range(10)))
self.assertEqual(self.f.tell(), p.tell())
self.f.close()
self.f = None
self.assertRaises(ReferenceError, getattr, p, 'tell')
def testSeekTell(self):
self.f.write(bytes(range(20)))
self.assertEqual(self.f.tell(), 20)
self.f.seek(0)
self.assertEqual(self.f.tell(), 0)
self.f.seek(10)
self.assertEqual(self.f.tell(), 10)
self.f.seek(5, 1)
self.assertEqual(self.f.tell(), 15)
self.f.seek(-5, 1)
self.assertEqual(self.f.tell(), 10)
self.f.seek(-5, 2)
self.assertEqual(self.f.tell(), 15)
def testAttributes(self):
# verify expected attributes exist
f = self.f
self.assertEqual(f.mode, "wb")
self.assertEqual(f.closed, False)
# verify the attributes are readonly
for attr in 'mode', 'closed':
self.assertRaises((AttributeError, TypeError),
setattr, f, attr, 'oops')
def testReadinto(self):
# verify readinto
self.f.write(bytes([1, 2]))
self.f.close()
a = array('b', b'x'*10)
self.f = _FileIO(TESTFN, 'r')
n = self.f.readinto(a)
self.assertEqual(array('b', [1, 2]), a[:n])
def test_none_args(self):
self.f.write(b"hi\nbye\nabc")
self.f.close()
self.f = _FileIO(TESTFN, 'r')
self.assertEqual(self.f.read(None), b"hi\nbye\nabc")
self.f.seek(0)
self.assertEqual(self.f.readline(None), b"hi\n")
self.assertEqual(self.f.readlines(None), [b"bye\n", b"abc"])
def test_reject(self):
self.assertRaises(TypeError, self.f.write, "Hello!")
def testRepr(self):
self.assertEqual(repr(self.f), "<_io.FileIO name=%r mode=%r>"
% (self.f.name, self.f.mode))
del self.f.name
self.assertEqual(repr(self.f), "<_io.FileIO fd=%r mode=%r>"
% (self.f.fileno(), self.f.mode))
self.f.close()
self.assertEqual(repr(self.f), "<_io.FileIO [closed]>")
def testErrors(self):
f = self.f
self.assertTrue(not f.isatty())
self.assertTrue(not f.closed)
#self.assertEqual(f.name, TESTFN)
self.assertRaises(ValueError, f.read, 10) # Open for reading
f.close()
self.assertTrue(f.closed)
f = _FileIO(TESTFN, 'r')
self.assertRaises(TypeError, f.readinto, "")
self.assertTrue(not f.closed)
f.close()
self.assertTrue(f.closed)
def testMethods(self):
methods = ['fileno', 'isatty', 'read', 'readinto',
'seek', 'tell', 'truncate', 'write', 'seekable',
'readable', 'writable']
self.f.close()
self.assertTrue(self.f.closed)
for methodname in methods:
method = getattr(self.f, methodname)
# should raise on closed file
self.assertRaises(ValueError, method)
def testOpendir(self):
# Issue 3703: opening a directory should fill the errno
# Windows always returns "[Errno 13]: Permission denied
# Unix calls dircheck() and returns "[Errno 21]: Is a directory"
try:
_FileIO('.', 'r')
except IOError as e:
self.assertNotEqual(e.errno, 0)
self.assertEqual(e.filename, ".")
else:
self.fail("Should have raised IOError")
#A set of functions testing that we get expected behaviour if someone has
#manually closed the internal file descriptor. First, a decorator:
def ClosedFD(func):
@wraps(func)
def wrapper(self):
#forcibly close the fd before invoking the problem function
f = self.f
os.close(f.fileno())
try:
func(self, f)
finally:
try:
self.f.close()
except IOError:
pass
return wrapper
def ClosedFDRaises(func):
@wraps(func)
def wrapper(self):
#forcibly close the fd before invoking the problem function
f = self.f
os.close(f.fileno())
try:
func(self, f)
except IOError as e:
self.assertEqual(e.errno, errno.EBADF)
else:
self.fail("Should have raised IOError")
finally:
try:
self.f.close()
except IOError:
pass
return wrapper
@ClosedFDRaises
def testErrnoOnClose(self, f):
f.close()
@ClosedFDRaises
def testErrnoOnClosedWrite(self, f):
f.write(b'a')
@ClosedFDRaises
def testErrnoOnClosedSeek(self, f):
f.seek(0)
@ClosedFDRaises
def testErrnoOnClosedTell(self, f):
f.tell()
@ClosedFDRaises
def testErrnoOnClosedTruncate(self, f):
f.truncate(0)
@ClosedFD
def testErrnoOnClosedSeekable(self, f):
f.seekable()
@ClosedFD
def testErrnoOnClosedReadable(self, f):
f.readable()
@ClosedFD
def testErrnoOnClosedWritable(self, f):
f.writable()
@ClosedFD
def testErrnoOnClosedFileno(self, f):
f.fileno()
@ClosedFD
def testErrnoOnClosedIsatty(self, f):
self.assertEqual(f.isatty(), False)
def ReopenForRead(self):
try:
self.f.close()
except IOError:
pass
self.f = _FileIO(TESTFN, 'r')
os.close(self.f.fileno())
return self.f
@ClosedFDRaises
def testErrnoOnClosedRead(self, f):
f = self.ReopenForRead()
f.read(1)
@ClosedFDRaises
def testErrnoOnClosedReadall(self, f):
f = self.ReopenForRead()
f.readall()
@ClosedFDRaises
def testErrnoOnClosedReadinto(self, f):
f = self.ReopenForRead()
a = array('b', b'x'*10)
f.readinto(a)
class OtherFileTests(unittest.TestCase):
def testAbles(self):
try:
f = _FileIO(TESTFN, "w")
self.assertEqual(f.readable(), False)
self.assertEqual(f.writable(), True)
self.assertEqual(f.seekable(), True)
f.close()
f = _FileIO(TESTFN, "r")
self.assertEqual(f.readable(), True)
self.assertEqual(f.writable(), False)
self.assertEqual(f.seekable(), True)
f.close()
f = _FileIO(TESTFN, "a+")
self.assertEqual(f.readable(), True)
self.assertEqual(f.writable(), True)
self.assertEqual(f.seekable(), True)
self.assertEqual(f.isatty(), False)
f.close()
if sys.platform != "win32":
try:
f = _FileIO("/dev/tty", "a")
except EnvironmentError:
# When run in a cron job there just aren't any
# ttys, so skip the test. This also handles other
# OS'es that don't support /dev/tty.
pass
else:
self.assertEqual(f.readable(), False)
self.assertEqual(f.writable(), True)
if sys.platform != "darwin" and \
'bsd' not in sys.platform and \
not sys.platform.startswith('sunos'):
# Somehow /dev/tty appears seekable on some BSDs
self.assertEqual(f.seekable(), False)
self.assertEqual(f.isatty(), True)
f.close()
finally:
os.unlink(TESTFN)
def testModeStrings(self):
# check invalid mode strings
for mode in ("", "aU", "wU+", "rw", "rt"):
try:
f = _FileIO(TESTFN, mode)
except ValueError:
pass
else:
f.close()
self.fail('%r is an invalid file mode' % mode)
def testUnicodeOpen(self):
# verify repr works for unicode too
f = _FileIO(str(TESTFN), "w")
f.close()
os.unlink(TESTFN)
def testBytesOpen(self):
# Opening a bytes filename
try:
fn = TESTFN.encode("ascii")
except UnicodeEncodeError:
# Skip test
return
f = _FileIO(fn, "w")
try:
f.write(b"abc")
f.close()
with open(TESTFN, "rb") as f:
self.assertEqual(f.read(), b"abc")
finally:
os.unlink(TESTFN)
def testInvalidFd(self):
self.assertRaises(ValueError, _FileIO, -10)
self.assertRaises(OSError, _FileIO, make_bad_fd())
if sys.platform == 'win32':
import msvcrt
self.assertRaises(IOError, msvcrt.get_osfhandle, make_bad_fd())
def testBadModeArgument(self):
# verify that we get a sensible error message for bad mode argument
bad_mode = "qwerty"
try:
f = _FileIO(TESTFN, bad_mode)
except ValueError as msg:
if msg.args[0] != 0:
s = str(msg)
if TESTFN in s or bad_mode not in s:
self.fail("bad error message for invalid mode: %s" % s)
# if msg.args[0] == 0, we're probably on Windows where there may be
# no obvious way to discover why open() failed.
else:
f.close()
self.fail("no error for invalid mode: %s" % bad_mode)
def testTruncate(self):
f = _FileIO(TESTFN, 'w')
f.write(bytes(bytearray(range(10))))
self.assertEqual(f.tell(), 10)
f.truncate(5)
self.assertEqual(f.tell(), 10)
self.assertEqual(f.seek(0, os.SEEK_END), 5)
f.truncate(15)
self.assertEqual(f.tell(), 5)
self.assertEqual(f.seek(0, os.SEEK_END), 15)
f.close()
def testTruncateOnWindows(self):
def bug801631():
# SF bug <http://www.python.org/sf/801631>
# "file.truncate fault on windows"
f = _FileIO(TESTFN, 'w')
f.write(bytes(range(11)))
f.close()
f = _FileIO(TESTFN,'r+')
data = f.read(5)
if data != bytes(range(5)):
self.fail("Read on file opened for update failed %r" % data)
if f.tell() != 5:
self.fail("File pos after read wrong %d" % f.tell())
f.truncate()
if f.tell() != 5:
self.fail("File pos after ftruncate wrong %d" % f.tell())
f.close()
size = os.path.getsize(TESTFN)
if size != 5:
self.fail("File size after ftruncate wrong %d" % size)
try:
bug801631()
finally:
os.unlink(TESTFN)
def testAppend(self):
try:
f = open(TESTFN, 'wb')
f.write(b'spam')
f.close()
f = open(TESTFN, 'ab')
f.write(b'eggs')
f.close()
f = open(TESTFN, 'rb')
d = f.read()
f.close()
self.assertEqual(d, b'spameggs')
finally:
try:
os.unlink(TESTFN)
except:
pass
def testInvalidInit(self):
self.assertRaises(TypeError, _FileIO, "1", 0, 0)
def testWarnings(self):
with check_warnings(quiet=True) as w:
self.assertEqual(w.warnings, [])
self.assertRaises(TypeError, _FileIO, [])
self.assertEqual(w.warnings, [])
self.assertRaises(ValueError, _FileIO, "/some/invalid/name", "rt")
self.assertEqual(w.warnings, [])
def test_main():
# Historically, these tests have been sloppy about removing TESTFN.
# So get rid of it no matter what.
try:
run_unittest(AutoFileTests, OtherFileTests)
finally:
if os.path.exists(TESTFN):
os.unlink(TESTFN)
if __name__ == '__main__':
test_main()
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