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"""Test script for the grp module."""
import grp
import unittest
from test import test_support
class GroupDatabaseTestCase(unittest.TestCase):
def check_value(self, value):
# check that a grp tuple has the entries and
# attributes promised by the docs
self.assertEqual(len(value), 4)
self.assertEqual(value[0], value.gr_name)
self.assert_(isinstance(value.gr_name, basestring))
self.assertEqual(value[1], value.gr_passwd)
self.assert_(isinstance(value.gr_passwd, basestring))
self.assertEqual(value[2], value.gr_gid)
self.assert_(isinstance(value.gr_gid, int))
self.assertEqual(value[3], value.gr_mem)
self.assert_(isinstance(value.gr_mem, list))
def valueseq(self, value1, value2):
# are two grp tuples equal (don't compare passwords)
return value1.gr_name==value2.gr_name and \
value1.gr_gid==value2.gr_gid and value1.gr_mem==value2.gr_mem
def test_values(self):
entries = grp.getgrall()
entriesbygid = {}
entriesbyname = {}
# we can't use the same strategy as in test_pwd, because
# we can't compare gr_passwd (Mac OS X returns
# "*" in getgrall() and "" in getgrgid())
for e in entries:
self.check_value(e)
entriesbygid.setdefault(e.gr_gid, []).append(e)
entriesbyname.setdefault(e.gr_name, []).append(e)
for e in entries:
e2 = grp.getgrgid(e.gr_gid)
self.check_value(e2)
# make sure that at least one of the entries
# for this gid compares equal to e2
self.assert_(max([self.valueseq(e2, x) \
for x in entriesbygid[e.gr_gid]]))
e2 = grp.getgrnam(e.gr_name)
self.check_value(e2)
# make sure that at least one of the entries
# for this name compares equal to e2
self.assert_(max([self.valueseq(e2, x) \
for x in entriesbyname[e.gr_name]]))
def test_errors(self):
self.assertRaises(TypeError, grp.getgrgid)
self.assertRaises(TypeError, grp.getgrnam)
self.assertRaises(TypeError, grp.getgrall, 42)
# try to get some errors
bynames = {}
bygids = {}
for (n, p, g, mem) in grp.getgrall():
bynames[n] = g
bygids[g] = n
allnames = bynames.keys()
namei = 0
fakename = allnames[namei]
while fakename in bynames:
chars = map(None, fakename)
for i in xrange(len(chars)):
if chars[i] == 'z':
chars[i] = 'A'
break
elif chars[i] == 'Z':
continue
else:
chars[i] = chr(ord(chars[i]) + 1)
break
else:
namei = namei + 1
try:
fakename = allnames[namei]
except IndexError:
# should never happen... if so, just forget it
break
fakename = ''.join(map(None, chars))
self.assertRaises(KeyError, grp.getgrnam, fakename)
# Choose a non-existent gid.
fakegid = 4127
while fakegid in bygids:
fakegid = (fakegid * 3) % 0x10000
self.assertRaises(KeyError, grp.getgrgid, fakegid)
def test_main():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(GroupDatabaseTestCase))
test_support.run_suite(suite)
if __name__ == "__main__":
test_main()
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