mirror of https://github.com/python/cpython.git
Change test_mmap.py to use test_support.TESTFN instead of hardcoded "foo",
and wrap the body in try/finally to ensure TESTFN gets cleaned up no matter what.
This commit is contained in:
Tim Peters
parent
8c3e91efaf
commit
fd69208b78
|
|
@ -1,4 +1,4 @@
|
|||
from test_support import verify
|
||||
from test_support import verify, TESTFN, unlink
|
||||
import mmap
|
||||
import os, re, sys
|
||||
|
||||
|
|
@ -7,118 +7,129 @@
|
|||
def test_both():
|
||||
"Test mmap module on Unix systems and Windows"
|
||||
|
||||
# Create an mmap'ed file
|
||||
f = open('foo', 'w+')
|
||||
# Create a file to be mmap'ed.
|
||||
f = open(TESTFN, 'w+')
|
||||
|
||||
# Write 2 pages worth of data to the file
|
||||
f.write('\0'* PAGESIZE)
|
||||
f.write('foo')
|
||||
f.write('\0'* (PAGESIZE-3) )
|
||||
try: # unlink TESTFN no matter what
|
||||
# Write 2 pages worth of data to the file
|
||||
f.write('\0'* PAGESIZE)
|
||||
f.write('foo')
|
||||
f.write('\0'* (PAGESIZE-3) )
|
||||
|
||||
m = mmap.mmap(f.fileno(), 2 * PAGESIZE)
|
||||
f.close()
|
||||
m = mmap.mmap(f.fileno(), 2 * PAGESIZE)
|
||||
f.close()
|
||||
|
||||
# Simple sanity checks
|
||||
# Simple sanity checks
|
||||
|
||||
print type(m) # SF bug 128713: segfaulted on Linux
|
||||
print ' Position of foo:', m.find('foo') / float(PAGESIZE), 'pages'
|
||||
verify(m.find('foo') == PAGESIZE)
|
||||
print type(m) # SF bug 128713: segfaulted on Linux
|
||||
print ' Position of foo:', m.find('foo') / float(PAGESIZE), 'pages'
|
||||
verify(m.find('foo') == PAGESIZE)
|
||||
|
||||
print ' Length of file:', len(m) / float(PAGESIZE), 'pages'
|
||||
verify(len(m) == 2*PAGESIZE)
|
||||
print ' Length of file:', len(m) / float(PAGESIZE), 'pages'
|
||||
verify(len(m) == 2*PAGESIZE)
|
||||
|
||||
print ' Contents of byte 0:', repr(m[0])
|
||||
verify(m[0] == '\0')
|
||||
print ' Contents of first 3 bytes:', repr(m[0:3])
|
||||
verify(m[0:3] == '\0\0\0')
|
||||
print ' Contents of byte 0:', repr(m[0])
|
||||
verify(m[0] == '\0')
|
||||
print ' Contents of first 3 bytes:', repr(m[0:3])
|
||||
verify(m[0:3] == '\0\0\0')
|
||||
|
||||
# Modify the file's content
|
||||
print "\n Modifying file's content..."
|
||||
m[0] = '3'
|
||||
m[PAGESIZE +3: PAGESIZE +3+3]='bar'
|
||||
# Modify the file's content
|
||||
print "\n Modifying file's content..."
|
||||
m[0] = '3'
|
||||
m[PAGESIZE +3: PAGESIZE +3+3]='bar'
|
||||
|
||||
# Check that the modification worked
|
||||
print ' Contents of byte 0:', repr(m[0])
|
||||
verify(m[0] == '3')
|
||||
print ' Contents of first 3 bytes:', repr(m[0:3])
|
||||
verify(m[0:3] == '3\0\0')
|
||||
print ' Contents of second page:', repr(m[PAGESIZE-1 : PAGESIZE + 7])
|
||||
verify(m[PAGESIZE-1 : PAGESIZE + 7] == '\0foobar\0')
|
||||
# Check that the modification worked
|
||||
print ' Contents of byte 0:', repr(m[0])
|
||||
verify(m[0] == '3')
|
||||
print ' Contents of first 3 bytes:', repr(m[0:3])
|
||||
verify(m[0:3] == '3\0\0')
|
||||
print ' Contents of second page:', repr(m[PAGESIZE-1 : PAGESIZE + 7])
|
||||
verify(m[PAGESIZE-1 : PAGESIZE + 7] == '\0foobar\0')
|
||||
|
||||
m.flush()
|
||||
m.flush()
|
||||
|
||||
# Test doing a regular expression match in an mmap'ed file
|
||||
match=re.search('[A-Za-z]+', m)
|
||||
if match is None:
|
||||
print ' ERROR: regex match on mmap failed!'
|
||||
else:
|
||||
start, end = match.span(0)
|
||||
length = end - start
|
||||
# Test doing a regular expression match in an mmap'ed file
|
||||
match=re.search('[A-Za-z]+', m)
|
||||
if match is None:
|
||||
print ' ERROR: regex match on mmap failed!'
|
||||
else:
|
||||
start, end = match.span(0)
|
||||
length = end - start
|
||||
|
||||
print ' Regex match on mmap (page start, length of match):',
|
||||
print start / float(PAGESIZE), length
|
||||
print ' Regex match on mmap (page start, length of match):',
|
||||
print start / float(PAGESIZE), length
|
||||
|
||||
verify(start == PAGESIZE)
|
||||
verify(end == PAGESIZE + 6)
|
||||
verify(start == PAGESIZE)
|
||||
verify(end == PAGESIZE + 6)
|
||||
|
||||
# test seeking around (try to overflow the seek implementation)
|
||||
m.seek(0,0)
|
||||
print ' Seek to zeroth byte'
|
||||
verify(m.tell() == 0)
|
||||
m.seek(42,1)
|
||||
print ' Seek to 42nd byte'
|
||||
verify(m.tell() == 42)
|
||||
m.seek(0,2)
|
||||
print ' Seek to last byte'
|
||||
verify(m.tell() == len(m))
|
||||
# test seeking around (try to overflow the seek implementation)
|
||||
m.seek(0,0)
|
||||
print ' Seek to zeroth byte'
|
||||
verify(m.tell() == 0)
|
||||
m.seek(42,1)
|
||||
print ' Seek to 42nd byte'
|
||||
verify(m.tell() == 42)
|
||||
m.seek(0,2)
|
||||
print ' Seek to last byte'
|
||||
verify(m.tell() == len(m))
|
||||
|
||||
print ' Try to seek to negative position...'
|
||||
try:
|
||||
m.seek(-1)
|
||||
except ValueError:
|
||||
pass
|
||||
else:
|
||||
verify(0, 'expected a ValueError but did not get it')
|
||||
|
||||
print ' Try to seek beyond end of mmap...'
|
||||
try:
|
||||
m.seek(1,2)
|
||||
except ValueError:
|
||||
pass
|
||||
else:
|
||||
verify(0, 'expected a ValueError but did not get it')
|
||||
|
||||
print ' Try to seek to negative position...'
|
||||
try:
|
||||
m.seek(-len(m)-1,2)
|
||||
except ValueError:
|
||||
pass
|
||||
else:
|
||||
verify(0, 'expected a ValueError but did not get it')
|
||||
|
||||
# Try resizing map
|
||||
print ' Attempting resize()'
|
||||
try:
|
||||
m.resize( 512 )
|
||||
except SystemError:
|
||||
# resize() not supported
|
||||
# No messages are printed, since the output of this test suite
|
||||
# would then be different across platforms.
|
||||
pass
|
||||
else:
|
||||
# resize() is supported
|
||||
verify(len(m) == 512,
|
||||
"len(m) is %d, but expecting 512" % (len(m),) )
|
||||
# Check that we can no longer seek beyond the new size.
|
||||
print ' Try to seek to negative position...'
|
||||
try:
|
||||
m.seek(513,0)
|
||||
m.seek(-1)
|
||||
except ValueError:
|
||||
pass
|
||||
else:
|
||||
verify(0, 'Could seek beyond the new size')
|
||||
verify(0, 'expected a ValueError but did not get it')
|
||||
|
||||
print ' Try to seek beyond end of mmap...'
|
||||
try:
|
||||
m.seek(1,2)
|
||||
except ValueError:
|
||||
pass
|
||||
else:
|
||||
verify(0, 'expected a ValueError but did not get it')
|
||||
|
||||
print ' Try to seek to negative position...'
|
||||
try:
|
||||
m.seek(-len(m)-1,2)
|
||||
except ValueError:
|
||||
pass
|
||||
else:
|
||||
verify(0, 'expected a ValueError but did not get it')
|
||||
|
||||
# Try resizing map
|
||||
print ' Attempting resize()'
|
||||
try:
|
||||
m.resize( 512 )
|
||||
except SystemError:
|
||||
# resize() not supported
|
||||
# No messages are printed, since the output of this test suite
|
||||
# would then be different across platforms.
|
||||
pass
|
||||
else:
|
||||
# resize() is supported
|
||||
verify(len(m) == 512,
|
||||
"len(m) is %d, but expecting 512" % (len(m),) )
|
||||
# Check that we can no longer seek beyond the new size.
|
||||
try:
|
||||
m.seek(513,0)
|
||||
except ValueError:
|
||||
pass
|
||||
else:
|
||||
verify(0, 'Could seek beyond the new size')
|
||||
|
||||
m.close()
|
||||
|
||||
finally:
|
||||
try:
|
||||
f.close()
|
||||
except OSError:
|
||||
pass
|
||||
try:
|
||||
unlink(TESTFN)
|
||||
except OSError:
|
||||
pass
|
||||
|
||||
m.close()
|
||||
os.unlink("foo")
|
||||
print ' Test passed'
|
||||
|
||||
test_both()
|
||||
|
|
|
|||
Loading…
Reference in New Issue