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#!/usr/bin/env python
"""Unit tests for M2Crypto.BIO.File.
Copyright (c) 1999-2002 Ng Pheng Siong. All rights reserved."""
import logging
import os
import platform
import tempfile
try:
import unittest2 as unittest
except ImportError:
import unittest
from M2Crypto.BIO import File, openfile
log = logging.getLogger(__name__)
class FileTestCase(unittest.TestCase):
def setUp(self):
self.data = b'abcdef' * 64
self.fd, self.fname = tempfile.mkstemp()
if platform.system() in ['Linux']:
self._proc = "/proc/{0}/fd/".format(os.getpid())
elif platform.system() in ['Darwin', 'FreeBSD']:
self._proc = "/dev/fd/"
else:
self.skipTest('File descriptors directory not found.')
self.max_fd = self.mfd()
# FIXME: this does not work on Windows. Provide and test
# a fallback method, like
# os.fdopen().fileno()-1
def mfd(self):
if hasattr(self, '_proc'):
return int(os.listdir(self._proc)[-1])
def tearDown(self):
if hasattr(self, '_proc'):
self.assertEqual(
self.max_fd, self.mfd(),
"last test did not close all file descriptors properly")
try:
os.close(self.fd)
except OSError:
pass
def test_openfile_rb(self):
# First create the file using Python's open().
with open(self.fname, 'wb') as f:
f.write(self.data)
# Now open the file using M2Crypto.BIO.openfile().
with openfile(self.fname, 'rb') as f:
data = f.read(len(self.data))
self.assertEqual(data, self.data)
def test_openfile_wb(self):
# First create the file using M2Crypto.BIO.openfile().
with openfile(self.fname, 'wb') as f:
f.write(self.data)
# Now open the file using Python's open().
with open(self.fname, 'rb') as f:
data = f.read(len(self.data))
self.assertEqual(data, self.data)
def test_closed(self):
f = openfile(self.fname, 'wb')
f.write(self.data)
f.close()
with self.assertRaises(IOError):
f.write(self.data)
def test_use_pyfile(self):
# First create the file.
with open(self.fname, 'wb') as f:
f2 = File(f)
f2.write(self.data)
f2.close()
# Now read the file.
with open(self.fname, 'rb') as f:
in_data = f.read(len(self.data))
self.assertEqual(len(in_data), len(self.data))
self.assertEqual(in_data, self.data)
def test_readline(self):
with open(self.fname, 'w') as f:
f.write('hello\nworld\n')
with openfile(self.fname, 'r') as f:
self.assertTrue(f.readable())
self.assertEqual(f.readline(), 'hello\n')
self.assertEqual(f.readline(), 'world\n')
with openfile(self.fname, 'r') as f:
self.assertEqual(f.readlines(), ['hello\n', 'world\n'])
def test_tell_seek(self):
with open(self.fname, 'w') as f:
f.write('hello world')
with openfile(self.fname, 'r') as f:
# Seek absolute
f.seek(6)
self.assertEqual(f.tell(), 6)
def suite():
return unittest.makeSuite(FileTestCase)
if __name__ == '__main__':
unittest.TextTestRunner().run(suite())
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