Viewing file:  test_file.py (1.38 KB) -rw-r--r--
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import os
from test_support import verify, TESTFN
from UserList import UserList
# verify writelines with instance sequence
l = UserList(['1', '2'])
f = open(TESTFN, 'wb')
f.writelines(l)
f.close()
f = open(TESTFN, 'rb')
buf = f.read()
f.close()
verify(buf == '12')
# verify writelines with integers
f = open(TESTFN, 'wb')
try:
f.writelines([1, 2, 3])
except TypeError:
pass
else:
print "writelines accepted sequence of integers"
f.close()
# verify writelines with integers in UserList
f = open(TESTFN, 'wb')
l = UserList([1,2,3])
try:
f.writelines(l)
except TypeError:
pass
else:
print "writelines accepted sequence of integers"
f.close()
# verify writelines with non-string object
class NonString: pass
f = open(TESTFN, 'wb')
try:
f.writelines([NonString(), NonString()])
except TypeError:
pass
else:
print "writelines accepted sequence of non-string objects"
f.close()
# verify that we get a sensible error message for bad mode argument
bad_mode = "qwerty"
try:
open(TESTFN, bad_mode)
except IOError, msg:
if msg[0] != 0:
s = str(msg)
if s.find(TESTFN) != -1 or s.find(bad_mode) == -1:
print "bad error message for invalid mode: %s" % s
# if msg[0] == 0, we're probably on Windows where there may be
# no obvious way to discover why open() failed.
else:
print "no error for invalid mode: %s" % bad_mode
os.unlink(TESTFN)
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