cpython/Lib/test/test_binhex.py

73 lines
2.1 KiB
Python

"""Test script for the binhex C module
Uses the mechanism of the python binhex module
Based on an original test by Roger E. Masse.
"""
import unittest
from test import support
from test.support import import_helper
from test.support import os_helper
from test.support import warnings_helper
with warnings_helper.check_warnings(('', DeprecationWarning)):
binhex = import_helper.import_fresh_module('binhex')
class BinHexTestCase(unittest.TestCase):
def setUp(self):
# binhex supports only file names encodable to Latin1
self.fname1 = os_helper.TESTFN_ASCII + "1"
self.fname2 = os_helper.TESTFN_ASCII + "2"
self.fname3 = os_helper.TESTFN_ASCII + "very_long_filename__very_long_filename__very_long_filename__very_long_filename__"
def tearDown(self):
os_helper.unlink(self.fname1)
os_helper.unlink(self.fname2)
os_helper.unlink(self.fname3)
DATA = b'Jack is my hero'
def test_binhex(self):
with open(self.fname1, 'wb') as f:
f.write(self.DATA)
binhex.binhex(self.fname1, self.fname2)
binhex.hexbin(self.fname2, self.fname1)
with open(self.fname1, 'rb') as f:
finish = f.readline()
self.assertEqual(self.DATA, finish)
def test_binhex_error_on_long_filename(self):
"""
The testcase fails if no exception is raised when a filename parameter provided to binhex.binhex()
is too long, or if the exception raised in binhex.binhex() is not an instance of binhex.Error.
"""
f3 = open(self.fname3, 'wb')
f3.close()
self.assertRaises(binhex.Error, binhex.binhex, self.fname3, self.fname2)
def test_binhex_line_endings(self):
# bpo-29566: Ensure the line endings are those for macOS 9
with open(self.fname1, 'wb') as f:
f.write(self.DATA)
binhex.binhex(self.fname1, self.fname2)
with open(self.fname2, 'rb') as fp:
contents = fp.read()
self.assertNotIn(b'\n', contents)
def test_main():
support.run_unittest(BinHexTestCase)
if __name__ == "__main__":
test_main()