cpython/Lib/test/test_tools/test_md5sum.py

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"""Tests for the md5sum script in the Tools directory."""
import sys
import os
import unittest
from test.support import os_helper
from test.support import hashlib_helper
from test.support.script_helper import assert_python_ok, assert_python_failure
from test.test_tools import scriptsdir, skip_if_missing
skip_if_missing()
@hashlib_helper.requires_hashdigest('md5')
class MD5SumTests(unittest.TestCase):
@classmethod
def setUpClass(cls):
cls.script = os.path.join(scriptsdir, 'md5sum.py')
os.mkdir(os_helper.TESTFN_ASCII)
cls.fodder = os.path.join(os_helper.TESTFN_ASCII, 'md5sum.fodder')
with open(cls.fodder, 'wb') as f:
f.write(b'md5sum\r\ntest file\r\n')
cls.fodder_md5 = b'd38dae2eb1ab346a292ef6850f9e1a0d'
cls.fodder_textmode_md5 = b'a8b07894e2ca3f2a4c3094065fa6e0a5'
@classmethod
def tearDownClass(cls):
os_helper.rmtree(os_helper.TESTFN_ASCII)
def test_noargs(self):
rc, out, err = assert_python_ok(self.script)
self.assertEqual(rc, 0)
self.assertTrue(
out.startswith(b'd41d8cd98f00b204e9800998ecf8427e <stdin>'))
self.assertFalse(err)
def test_checksum_fodder(self):
rc, out, err = assert_python_ok(self.script, self.fodder)
self.assertEqual(rc, 0)
self.assertTrue(out.startswith(self.fodder_md5))
for part in self.fodder.split(os.path.sep):
self.assertIn(part.encode(), out)
self.assertFalse(err)
def test_dash_l(self):
rc, out, err = assert_python_ok(self.script, '-l', self.fodder)
self.assertEqual(rc, 0)
self.assertIn(self.fodder_md5, out)
parts = self.fodder.split(os.path.sep)
self.assertIn(parts[-1].encode(), out)
self.assertNotIn(parts[-2].encode(), out)
def test_dash_t(self):
rc, out, err = assert_python_ok(self.script, '-t', self.fodder)
self.assertEqual(rc, 0)
self.assertTrue(out.startswith(self.fodder_textmode_md5))
self.assertNotIn(self.fodder_md5, out)
def test_dash_s(self):
rc, out, err = assert_python_ok(self.script, '-s', '512', self.fodder)
self.assertEqual(rc, 0)
self.assertIn(self.fodder_md5, out)
def test_multiple_files(self):
rc, out, err = assert_python_ok(self.script, self.fodder, self.fodder)
self.assertEqual(rc, 0)
lines = out.splitlines()
self.assertEqual(len(lines), 2)
self.assertEqual(*lines)
def test_usage(self):
rc, out, err = assert_python_failure(self.script, '-h')
self.assertEqual(rc, 2)
self.assertEqual(out, b'')
self.assertGreater(err, b'')
if __name__ == '__main__':
unittest.main()