Mailing List Archive

Update of /cvsroot/python/python/dist/src/Lib/test
In directory usw-pr-cvs1:/tmp/cvs-serv6686/Lib/test

Added Files:
test_resource.py
Log Message:
Add tests for the recent resource module change.
Also add a test that Python doesn't die with SIGXFSZ if it exceeds the
file rlimit. (Assuming this will also test the behavior when the 2GB
limit is exceed on a platform that doesn't have large file support.)


--- NEW FILE: test_resource.py ---
import os
import resource

from test_support import TESTFN

# This test is checking a few specific problem spots. RLIMIT_FSIZE
# should be RLIM_INFINITY, which will be a really big number on a
# platform with large file support. On these platforms, we need to
# test that the get/setrlimit functions properly convert the number to
# a C long long and that the conversion doesn't raise an error.

try:
cur, max = resource.getrlimit(resource.RLIMIT_FSIZE)
except AttributeError:
pass
else:
print resource.RLIM_INFINITY == max
resource.setrlimit(resource.RLIMIT_FSIZE, (cur, max))

# Now check to see what happens when the RLIMIT_FSIZE is small. Some
# versions of Python were terminated by an uncaught SIGXFSZ, but
# pythonrun.c has been fixed to ignore that exception. If so, the
# write() should return EFBIG when the limit is exceeded.

try:
resource.setrlimit(resource.RLIMIT_FSIZE, (1024, max))
f = open(TESTFN, "wb")
f.write("X" * 1024)
try:
f.write("Y")
f.flush()
except IOError:
pass
f.close()
os.unlink(TESTFN)
finally:
resource.setrlimit(resource.RLIMIT_FSIZE, (cur, max))

# And be sure that setrlimit is checking for really large values
too_big = 10L**50
try:
resource.setrlimit(resource.RLIMIT_FSIZE, (too_big, max))
except OverflowError:
pass
try:
resource.setrlimit(resource.RLIMIT_FSIZE, (max, too_big))
except OverflowError:
pass