Port test_resource.py to unittest.

This commit is contained in:
Walter Dörwald 2007-01-20 17:28:31 +00:00
parent cc0eba9d98
commit 9fab9a7da8
2 changed files with 71 additions and 51 deletions

View File

@ -1,2 +0,0 @@
test_resource
True

View File

@ -1,56 +1,78 @@
import os import unittest
import resource from test import test_support
from test.test_support import TESTFN
# This test is checking a few specific problem spots. RLIMIT_FSIZE import os, resource
# 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: # This test is checking a few specific problem spots with the resource module.
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 class ResourceTest(unittest.TestCase):
# versions of Python were terminated by an uncaught SIGXFSZ, but def test_fsize_ismax(self):
# pythonrun.c has been fixed to ignore that exception. If so, the
# write() should return EFBIG when the limit is exceeded. try:
(cur, max) = resource.getrlimit(resource.RLIMIT_FSIZE)
except AttributeError:
pass
else:
# 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.
self.assertEqual(resource.RLIM_INFINITY, max)
resource.setrlimit(resource.RLIMIT_FSIZE, (cur, max))
# At least one platform has an unlimited RLIMIT_FSIZE and attempts to def test_fsize_enforced(self):
# change it raise ValueError instead. try:
(cur, max) = resource.getrlimit(resource.RLIMIT_FSIZE)
except AttributeError:
pass
else:
# 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.
# At least one platform has an unlimited RLIMIT_FSIZE and attempts
# to change it raise ValueError instead.
try:
try:
resource.setrlimit(resource.RLIMIT_FSIZE, (1024, max))
limit_set = True
except ValueError:
limit_set = False
f = open(test_support.TESTFN, "wb")
f.write("X" * 1024)
try:
f.write("Y")
f.flush()
except IOError:
if not limit_set:
raise
f.close()
os.unlink(test_support.TESTFN)
finally:
resource.setrlimit(resource.RLIMIT_FSIZE, (cur, max))
try: def test_fsize_toobig(self):
try: # Be sure that setrlimit is checking for really large values
resource.setrlimit(resource.RLIMIT_FSIZE, (1024, max)) too_big = 10L**50
limit_set = 1 try:
except ValueError: (cur, max) = resource.getrlimit(resource.RLIMIT_FSIZE)
limit_set = 0 except AttributeError:
f = open(TESTFN, "wb") pass
f.write("X" * 1024) else:
try: try:
f.write("Y") resource.setrlimit(resource.RLIMIT_FSIZE, (too_big, max))
f.flush() except (OverflowError, ValueError):
except IOError: pass
if not limit_set: try:
raise resource.setrlimit(resource.RLIMIT_FSIZE, (max, too_big))
f.close() except (OverflowError, ValueError):
os.unlink(TESTFN) pass
finally:
resource.setrlimit(resource.RLIMIT_FSIZE, (cur, max))
# And be sure that setrlimit is checking for really large values def test_main(verbose=None):
too_big = 10L**50 test_support.run_unittest(ResourceTest)
try:
resource.setrlimit(resource.RLIMIT_FSIZE, (too_big, max)) if __name__ == "__main__":
except (OverflowError, ValueError): test_main()
pass
try:
resource.setrlimit(resource.RLIMIT_FSIZE, (max, too_big))
except (OverflowError, ValueError):
pass