[Python-checkins] CVS: python/dist/src/Lib/test test_mmap.py,1.15,1.16
Tim Peters
tim_one@users.sourceforge.net
Thu, 10 May 2001 13:03:06 -0700
Update of /cvsroot/python/python/dist/src/Lib/test
In directory usw-pr-cvs1:/tmp/cvs-serv10921/python/dist/src/Lib/test
Modified Files:
test_mmap.py
Log Message:
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.
Index: test_mmap.py
===================================================================
RCS file: /cvsroot/python/python/dist/src/Lib/test/test_mmap.py,v
retrieving revision 1.15
retrieving revision 1.16
diff -C2 -r1.15 -r1.16
*** test_mmap.py 2001/02/09 11:49:24 1.15
--- test_mmap.py 2001/05/10 20:03:04 1.16
***************
*** 1,3 ****
! from test_support import verify
import mmap
import os, re, sys
--- 1,3 ----
! from test_support import verify, TESTFN, unlink
import mmap
import os, re, sys
***************
*** 8,123 ****
"Test mmap module on Unix systems and Windows"
! # Create an mmap'ed file
! f = open('foo', 'w+')
! # 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()
!
! # 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 ' 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')
!
! # 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')
!
! 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
!
! print ' Regex match on mmap (page start, length of match):',
! print start / float(PAGESIZE), length
!
! 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))
!
! 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.
try:
! m.seek(513,0)
except ValueError:
pass
else:
! verify(0, 'Could seek beyond the new size')
- m.close()
- os.unlink("foo")
print ' Test passed'
--- 8,134 ----
"Test mmap module on Unix systems and Windows"
! # Create a file to be mmap'ed.
! f = open(TESTFN, 'w+')
! 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()
!
! # 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 ' 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')
!
! # 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')
!
! 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
!
! print ' Regex match on mmap (page start, length of match):',
! print start / float(PAGESIZE), length
!
! 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))
!
! 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.
! 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
print ' Test passed'